Expose advanced rounding options in count software
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@ -29,12 +29,17 @@
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tr.info td {
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background-color: #edededff;
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}
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i.sep::after {
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content: "•";
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color: #ccc;
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}
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</style>
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</head>
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<body>
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<div>
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<input type="file" id="bltFile">
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<button onclick="clickCount()">Count</button>
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<i class="sep"></i>
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<label>
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Preset:
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<select id="selPreset" onchange="changePreset()">
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@ -66,10 +71,12 @@
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<option value="hare_exact">Hare (exact)</option>
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</select>
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</label>
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<i class="sep"></i>
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<label>
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<input type="checkbox" id="chkProgQuota">
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Progressive quota
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</label>
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<i class="sep"></i>
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<label>
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<input type="checkbox" id="chkBulkElection" checked>
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Bulk election
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@ -87,10 +94,29 @@
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<option value="fixed" selected>Fixed</option>
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</select>
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</label>
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<i class="sep"></i>
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<label>
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Decimal places (if Numbers = Fixed):
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<input type="number" id="txtDP" value="5" style="width: 3em;">
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</label>
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<i class="sep"></i>
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<label>
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<input type="checkbox" id="chkRoundVotes">
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Round votes to
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</label>
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<label>
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<input type="number" id="txtRoundVotes" value="0" style="width: 3em;">
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d.p.
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</label>
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<i class="sep"></i>
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<label>
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<input type="checkbox" id="chkRoundWeights">
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Round ballot weights to
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</label>
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<label>
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<input type="number" id="txtRoundWeights" value="0" style="width: 3em;">
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d.p.
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</label>
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<br>
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<label>
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Surplus order:
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@ -99,6 +125,7 @@
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<option value="order">By order</option>
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</select>
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</label>
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<i class="sep"></i>
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<label>
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Method:
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<select id="selTransfers">
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@ -131,6 +158,7 @@
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<option value="prompt">Prompt</option>
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</select>
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</label>
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<i class="sep"></i>
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<label>
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Random seed:
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<input type="text" id="txtSeed" value="">
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@ -35,6 +35,8 @@ function changePreset() {
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document.getElementById('chkBulkExclusion').checked = false;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '5';
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document.getElementById('chkRoundVotes').checked = false;
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSurplus').value = 'size';
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document.getElementById('selTransfers').value = 'wig';
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document.getElementById('selPapers').value = 'both';
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@ -47,6 +49,8 @@ function changePreset() {
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = true;
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document.getElementById('selNumbers').value = 'rational';
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document.getElementById('chkRoundVotes').checked = false;
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSurplus').value = 'size';
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document.getElementById('selTransfers').value = 'wig';
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document.getElementById('selPapers').value = 'both';
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@ -59,7 +63,10 @@ function changePreset() {
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = true;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '0';
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document.getElementById('txtDP').value = '5';
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document.getElementById('chkRoundVotes').checked = true;
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document.getElementById('txtRoundVotes').value = '0';
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSurplus').value = 'order';
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document.getElementById('selTransfers').value = 'uig';
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document.getElementById('selPapers').value = 'both';
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@ -73,6 +80,8 @@ function changePreset() {
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document.getElementById('chkBulkExclusion').checked = true;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '5';
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document.getElementById('chkRoundVotes').checked = false;
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSurplus').value = 'size';
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document.getElementById('selTransfers').value = 'wright';
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document.getElementById('selPapers').value = 'both';
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@ -85,7 +94,10 @@ function changePreset() {
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = false;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '0';
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document.getElementById('txtDP').value = '5';
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document.getElementById('chkRoundVotes').checked = true;
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document.getElementById('txtRoundVotes').value = '0';
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSurplus').value = 'order';
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document.getElementById('selTransfers').value = 'eg';
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document.getElementById('selPapers').value = 'transferable';
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@ -318,7 +330,9 @@ async function clickCount() {
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'surplus_order': document.getElementById('selSurplus').value,
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'papers': document.getElementById('selPapers').value,
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'exclusion': document.getElementById('selExclusion').value,
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'ties': document.getElementById('selTies').value
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'ties': document.getElementById('selTies').value,
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'round_votes': document.getElementById('chkRoundVotes').checked ? parseInt(document.getElementById('txtRoundVotes').value) : null,
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'round_weights': document.getElementById('chkRoundWeights').checked ? parseInt(document.getElementById('txtRoundWeights').value) : null,
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},
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'seed': document.getElementById('txtSeed').value,
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'data': text
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@ -17,7 +17,7 @@
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__pragma__ = lambda x: None
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from pyRCV2.model import CandidateState, CountCard, CountCompleted, CountStepResult
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from pyRCV2.numbers import Num, Rational
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from pyRCV2.numbers import Num
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from pyRCV2.safedict import SafeDict
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import itertools
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@ -33,8 +33,6 @@ class BaseSTVCounter:
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def __init__(self, election, options=None):
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self.election = election
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self.cls_ballot_value = Num # Need to use Rational in unweighted inclusive Gregory
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# Default options
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self.options = {
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'prog_quota': False, # Progressively reducing quota?
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@ -44,7 +42,9 @@ class BaseSTVCounter:
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'surplus_order': 'size', # 'size' or 'order'
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'papers': 'both', # 'both' or 'transferable'
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'exclusion': 'one_round', # 'one_round', 'parcels_by_order' or 'by_value'
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'ties': []
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'ties': [], # List of tie strategies (e.g. TiesRandom)
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'round_votes': None, # Number of decimal places or None
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'round_weights': None, # Number of decimal places or None
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}
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if options is not None:
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@ -103,12 +103,12 @@ class BaseSTVCounter:
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if candidate is not None:
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self.candidates[candidate].transfers += ballot.value
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if len(self.candidates[candidate].parcels) == 0:
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self.candidates[candidate].parcels.append([(ballot, self.cls_ballot_value(ballot.value))])
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self.candidates[candidate].parcels.append([(ballot, Num(ballot.value))])
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else:
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self.candidates[candidate].parcels[0].append((ballot, self.cls_ballot_value(ballot.value)))
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self.candidates[candidate].parcels[0].append((ballot, Num(ballot.value)))
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else:
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self.exhausted.transfers += ballot.value
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#self.exhausted.parcels[0].append((ballot, self.cls_ballot_value(ballot.value)))
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#self.exhausted.parcels[0].append((ballot, Num(ballot.value)))
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__pragma__('noopov')
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def step(self):
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@ -250,39 +250,6 @@ class BaseSTVCounter:
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"""
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raise NotImplementedError('Method not implemented')
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def next_preferences(self, parcels):
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"""
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Examine the specified parcels and group ballot papers by next available preference
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"""
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# SafeDict: Candidate -> [List[Ballot], ballots, votes]
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next_preferences = SafeDict([(c, [[], Num('0'), Rational('0')]) for c, cc in self.candidates.items()])
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total_ballots = Num('0')
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total_votes = Rational('0')
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next_exhausted = []
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exhausted_ballots = Num('0')
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exhausted_votes = Rational('0')
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for parcel in parcels:
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for ballot, ballot_value in parcel:
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__pragma__('opov')
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total_ballots += ballot.value
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total_votes += ballot_value.to_rational()
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candidate = next((c for c in ballot.preferences if self.candidates[c].state == CandidateState.HOPEFUL), None)
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if candidate is not None:
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next_preferences[candidate][0].append((ballot, ballot_value))
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next_preferences[candidate][1] += ballot.value
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next_preferences[candidate][2] += ballot_value.to_rational()
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else:
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next_exhausted.append((ballot, ballot_value))
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exhausted_ballots += ballot.value
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exhausted_votes += ballot_value.to_rational()
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__pragma__('noopov')
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return next_preferences, total_ballots, total_votes, next_exhausted, exhausted_ballots, exhausted_votes
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def before_exclusion(self):
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"""
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Check before excluding a candidate
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@ -428,6 +395,43 @@ class BaseSTVCounter:
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meets_quota.remove(x)
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# -----------------
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# UTILITY FUNCTIONS
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# -----------------
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def next_preferences(self, parcels):
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"""
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Examine the specified parcels and group ballot papers by next available preference
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"""
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# SafeDict: Candidate -> [List[Ballot], ballots, votes]
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next_preferences = SafeDict([(c, [[], Num('0'), Num('0')]) for c, cc in self.candidates.items()])
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total_ballots = Num('0')
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total_votes = Num('0')
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next_exhausted = []
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exhausted_ballots = Num('0')
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exhausted_votes = Num('0')
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for parcel in parcels:
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for ballot, ballot_value in parcel:
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__pragma__('opov')
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total_ballots += ballot.value
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total_votes += ballot_value
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candidate = next((c for c in ballot.preferences if self.candidates[c].state == CandidateState.HOPEFUL), None)
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if candidate is not None:
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next_preferences[candidate][0].append((ballot, ballot_value))
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next_preferences[candidate][1] += ballot.value
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next_preferences[candidate][2] += ballot_value
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else:
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next_exhausted.append((ballot, ballot_value))
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exhausted_ballots += ballot.value
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exhausted_votes += ballot_value
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__pragma__('noopov')
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return next_preferences, total_ballots, total_votes, next_exhausted, exhausted_ballots, exhausted_votes
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def choose_lowest(self, l):
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"""
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Provided a list of tuples (Candidate, CountCard), sorted in ASCENDING order of votes, choose the tuple with the fewest votes, breaking ties appropriately
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@ -476,6 +480,16 @@ class BaseSTVCounter:
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raise Exception('Unable to resolve tie')
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def round_votes(self, num):
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if self.options['round_votes'] is None:
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return num
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return num.round(self.options['round_votes'], num.ROUND_DOWN)
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def round_weight(self, num):
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if self.options['round_weights'] is None:
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return num
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return num.round(self.options['round_weights'], num.ROUND_DOWN)
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class WIGSTVCounter(BaseSTVCounter):
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"""
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Basic weighted inclusive Gregory STV counter
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@ -486,7 +500,7 @@ class WIGSTVCounter(BaseSTVCounter):
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if self.options['papers'] == 'transferable':
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__pragma__('opov')
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transferable_votes = total_votes.to_num() - exhausted_votes.to_num()
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transferable_votes = total_votes - exhausted_votes
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__pragma__('noopov')
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for candidate, x in next_preferences.items():
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@ -503,11 +517,11 @@ class WIGSTVCounter(BaseSTVCounter):
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__pragma__('opov')
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if self.options['papers'] == 'transferable':
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if transferable_votes > surplus:
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self.candidates[candidate].transfers += (num_votes.to_num() * surplus) / transferable_votes
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self.candidates[candidate].transfers += self.round_votes((num_votes * surplus) / transferable_votes)
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else:
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self.candidates[candidate].transfers += num_votes.to_num() # Do not allow weight to increase
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self.candidates[candidate].transfers += self.round_votes(num_votes) # Do not allow weight to increase
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else:
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self.candidates[candidate].transfers += (num_votes.to_num() * surplus) / total_votes.to_num()
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self.candidates[candidate].transfers += self.round_votes((num_votes * surplus) / total_votes)
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__pragma__('noopov')
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for ballot, ballot_value in cand_ballots:
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@ -518,9 +532,9 @@ class WIGSTVCounter(BaseSTVCounter):
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else:
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new_value = ballot_value
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else:
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new_value = (ballot_value * surplus) / total_votes.to_num()
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new_value = (ballot_value * surplus) / total_votes
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new_parcel.append((ballot, new_value))
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new_parcel.append((ballot, self.round_weight(new_value)))
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__pragma__('noopov')
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__pragma__('opov')
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@ -528,9 +542,9 @@ class WIGSTVCounter(BaseSTVCounter):
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if transferable_votes > surplus:
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pass # No ballots exhaust
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else:
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self.exhausted.transfers += (surplus - transferable_votes)
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self.exhausted.transfers += self.round_votes((surplus - transferable_votes))
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else:
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self.exhausted.transfers += (exhausted_votes.to_num() * surplus) / total_votes.to_num()
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self.exhausted.transfers += self.round_votes((exhausted_votes * surplus) / total_votes)
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__pragma__('noopov')
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__pragma__('opov')
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@ -552,8 +566,10 @@ class WIGSTVCounter(BaseSTVCounter):
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# Sort the ballots by value
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ballots = [(b, bv) for p in count_card.parcels for b, bv in p]
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__pragma__('opov')
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ballots.sort(key=lambda x: x[1] / x[0].value.to_rational(), reverse=True)
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count_card.parcels = [list(g) for k, g in itertools.groupby(ballots, lambda x: x[1] / x[0].value.to_rational())]
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ballots.sort(key=lambda x: x[1] / x[0].value, reverse=True)
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# Round to 8 decimal places to consider equality
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# FIXME: Work out a better way of doing this
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count_card.parcels = [list(g) for k, g in itertools.groupby(ballots, lambda x: (x[1] / x[0].value).round(8, x[1].ROUND_DOWN))]
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__pragma__('noopov')
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if len(count_card.parcels) > 0:
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@ -579,7 +595,7 @@ class WIGSTVCounter(BaseSTVCounter):
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__pragma__('noopov')
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__pragma__('opov')
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self.candidates[candidate].transfers += num_votes.to_num()
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self.candidates[candidate].transfers += self.round_votes(num_votes)
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__pragma__('noopov')
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for ballot, ballot_value in cand_ballots:
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@ -588,11 +604,11 @@ class WIGSTVCounter(BaseSTVCounter):
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__pragma__('noopov')
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__pragma__('opov')
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self.exhausted.transfers += exhausted_votes.to_num()
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self.exhausted.transfers += self.round_votes(exhausted_votes)
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__pragma__('noopov')
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__pragma__('opov')
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count_card.transfers -= total_votes.to_num()
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count_card.transfers -= total_votes
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__pragma__('noopov')
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if len(count_card.parcels) == 0:
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@ -608,22 +624,20 @@ class UIGSTVCounter(WIGSTVCounter):
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def __init__(self, *args):
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WIGSTVCounter.__init__(self, *args)
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# Need to use Rational for ballot value internally, as Num may be set to integers only
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self.cls_ballot_value = lambda x: x.to_rational()
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def do_surplus(self, candidate_surplus, count_card, surplus):
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next_preferences, total_ballots, total_votes, next_exhausted, exhausted_ballots, exhausted_votes = self.next_preferences(count_card.parcels)
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if self.options['papers'] == 'transferable':
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__pragma__('opov')
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transferable_ballots = total_ballots - exhausted_ballots # Num
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transferable_votes = total_votes - exhausted_votes # Rational
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transferable_ballots = total_ballots - exhausted_ballots
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transferable_votes = total_votes - exhausted_votes
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__pragma__('noopov')
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for candidate, x in next_preferences.items():
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cand_ballots = x[0]
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num_ballots = x[1] # Num
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num_votes = x[2] # Rational
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num_ballots = x[1]
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num_votes = x[2]
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new_parcel = []
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if len(cand_ballots) > 0:
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@ -633,35 +647,35 @@ class UIGSTVCounter(WIGSTVCounter):
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__pragma__('opov')
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if self.options['papers'] == 'transferable':
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if transferable_votes.to_num() > surplus:
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self.candidates[candidate].transfers += (num_ballots * surplus) / transferable_ballots
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if transferable_votes > surplus:
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self.candidates[candidate].transfers += self.round_votes((num_ballots * surplus) / transferable_ballots)
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else:
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self.candidates[candidate].transfers += num_votes.to_num()
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self.candidates[candidate].transfers += self.round_votes(num_votes)
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else:
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self.candidates[candidate].transfers += (num_ballots * surplus) / total_ballots
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self.candidates[candidate].transfers += self.round_votes((num_ballots * surplus) / total_ballots)
|
||||
__pragma__('noopov')
|
||||
|
||||
for ballot, ballot_value in cand_ballots:
|
||||
__pragma__('opov')
|
||||
if self.options['papers'] == 'transferable':
|
||||
if transferable_votes.to_num() > surplus:
|
||||
new_value = (ballot.value * surplus).to_rational() / transferable_ballots.to_rational()
|
||||
if transferable_votes > surplus:
|
||||
new_value = (ballot.value * surplus) / transferable_ballots
|
||||
else:
|
||||
new_value = ballot_value
|
||||
else:
|
||||
new_value = (ballot.value * surplus).to_rational() / total_ballots.to_rational()
|
||||
new_value = (ballot.value * surplus) / total_ballots
|
||||
|
||||
new_parcel.append((ballot, new_value))
|
||||
new_parcel.append((ballot, self.round_weight(new_value)))
|
||||
__pragma__('noopov')
|
||||
|
||||
__pragma__('opov')
|
||||
if self.options['papers'] == 'transferable':
|
||||
if transferable_votes.to_num() > surplus:
|
||||
if transferable_votes > surplus:
|
||||
pass # No ballots exhaust
|
||||
else:
|
||||
self.exhausted.transfers += surplus - transferable_votes.to_num()
|
||||
self.exhausted.transfers += self.round_votes(surplus - transferable_votes)
|
||||
else:
|
||||
self.exhausted.transfers += (exhausted_ballots * surplus) / total_ballots
|
||||
self.exhausted.transfers += self.round_votes((exhausted_ballots * surplus) / total_ballots)
|
||||
__pragma__('noopov')
|
||||
|
||||
__pragma__('opov')
|
||||
@ -684,7 +698,7 @@ class EGSTVCounter(UIGSTVCounter):
|
||||
if self.options['papers'] == 'transferable':
|
||||
__pragma__('opov')
|
||||
transferable_ballots = total_ballots - exhausted_ballots
|
||||
transferable_votes = total_votes.to_num() - exhausted_votes.to_num()
|
||||
transferable_votes = total_votes - exhausted_votes
|
||||
__pragma__('noopov')
|
||||
|
||||
for candidate, x in next_preferences.items():
|
||||
@ -701,11 +715,11 @@ class EGSTVCounter(UIGSTVCounter):
|
||||
__pragma__('opov')
|
||||
if self.options['papers'] == 'transferable':
|
||||
if transferable_votes > surplus:
|
||||
self.candidates[candidate].transfers += (num_ballots * surplus) / transferable_ballots
|
||||
self.candidates[candidate].transfers += self.round_votes((num_ballots * surplus) / transferable_ballots)
|
||||
else:
|
||||
self.candidates[candidate].transfers += num_votes.to_num()
|
||||
self.candidates[candidate].transfers += self.round_votes(num_votes)
|
||||
else:
|
||||
self.candidates[candidate].transfers += (num_ballots * surplus) / total_ballots
|
||||
self.candidates[candidate].transfers += self.round_votes((num_ballots * surplus) / total_ballots)
|
||||
__pragma__('noopov')
|
||||
|
||||
for ballot, ballot_value in cand_ballots:
|
||||
@ -718,7 +732,7 @@ class EGSTVCounter(UIGSTVCounter):
|
||||
else:
|
||||
new_value = (ballot.value * surplus) / total_ballots
|
||||
|
||||
new_parcel.append((ballot, new_value))
|
||||
new_parcel.append((ballot, self.round_weight(new_value)))
|
||||
__pragma__('noopov')
|
||||
|
||||
__pragma__('opov')
|
||||
@ -726,9 +740,9 @@ class EGSTVCounter(UIGSTVCounter):
|
||||
if transferable_votes > surplus:
|
||||
pass # No ballots exhaust
|
||||
else:
|
||||
self.exhausted.transfers += (surplus - transferable_votes)
|
||||
self.exhausted.transfers += self.round_votes((surplus - transferable_votes))
|
||||
else:
|
||||
self.exhausted.transfers += (exhausted_ballots * surplus) / total_ballots
|
||||
self.exhausted.transfers += self.round_votes((exhausted_ballots * surplus) / total_ballots)
|
||||
__pragma__('noopov')
|
||||
|
||||
__pragma__('opov')
|
||||
|
||||
@ -14,6 +14,7 @@
|
||||
# You should have received a copy of the GNU Affero General Public License
|
||||
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
|
||||
from pytest import approx
|
||||
from pytest_steps import test_steps
|
||||
|
||||
import pyRCV2.blt
|
||||
@ -36,7 +37,7 @@ candidates = [data[i][0] for i in range(2, len(data) - 2)]
|
||||
def test_aec_tas19():
|
||||
"""Compare count of aec-senate-formalpreferences-24310-TAS.blt.gz with model result at https://results.aec.gov.au/24310/Website/External/SenateStateDop-24310-TAS.pdf"""
|
||||
|
||||
pyRCV2.numbers.set_numclass(pyRCV2.numbers.NativeInt)
|
||||
pyRCV2.numbers.set_numclass(pyRCV2.numbers.Native)
|
||||
|
||||
with gzip.open('tests/data/aec-senate-formalpreferences-24310-TAS.blt.gz', 'rt') as f:
|
||||
election = pyRCV2.blt.readBLT(f.read())
|
||||
@ -45,7 +46,8 @@ def test_aec_tas19():
|
||||
|
||||
counter = UIGSTVCounter(election, {
|
||||
'surplus_order': 'order',
|
||||
'exclusion': 'by_value'
|
||||
'exclusion': 'by_value',
|
||||
'round_votes': 0,
|
||||
})
|
||||
result = counter.reset()
|
||||
|
||||
@ -56,21 +58,21 @@ def test_aec_tas19():
|
||||
result = counter.step()
|
||||
|
||||
comment = data[1][i]
|
||||
assert result.comment == comment, 'Failed to verify stage {} comment'.format(stage)
|
||||
assert result.comment == comment, 'Failed to verify comment'
|
||||
|
||||
for j, cand in enumerate(candidates):
|
||||
votes = pyRCV2.numbers.Num(data[j + 2][i])
|
||||
cc = next(cc for c, cc in result.candidates.items() if c.name == cand)
|
||||
assert cc.votes == votes, 'Failed to verify stage {} candidate "{}" votes, got {} expected {}'.format(stage, cand, cc.votes.pp(0), votes.pp(0))
|
||||
assert cc.votes.impl == approx(votes.impl), 'Failed to verify candidate "{}" votes, got {} expected {}'.format(cand, cc.votes.pp(0), votes.pp(0))
|
||||
|
||||
state = data[j + 2][i + 1] if len(data[j + 2]) > (i + 1) else ''
|
||||
accept = {'': CandidateState.HOPEFUL, 'PEL': CandidateState.PROVISIONALLY_ELECTED, 'EL': CandidateState.ELECTED, 'EX': CandidateState.EXCLUDED, 'EXCLUDING': CandidateState.EXCLUDING}
|
||||
assert cc.state == accept[state], 'Failed to verify stage {} candidate "{}" state'.format(stage, cand)
|
||||
assert cc.state == accept[state], 'Failed to verify candidate "{}" state'.format(cand)
|
||||
|
||||
exhausted = pyRCV2.numbers.Num(data[len(candidates) + 2][i])
|
||||
assert result.exhausted.votes == exhausted, 'Failed to verify stage {} exhausted votes, got {} expected {}'.format(stage, result.exhausted.votes.pp(0), exhausted.pp(0))
|
||||
assert result.exhausted.votes.impl == approx(exhausted.impl), 'Failed to verify exhausted votes, got {} expected {}'.format(result.exhausted.votes.pp(0), exhausted.pp(0))
|
||||
|
||||
loss_fraction = pyRCV2.numbers.Num(data[len(candidates) + 3][i])
|
||||
assert result.loss_fraction.votes == loss_fraction, 'Failed to verify stage {} loss to fraction, got {} expected {}'.format(stage, result.loss_fraction.votes.pp(0), loss_fraction.pp(0))
|
||||
assert result.loss_fraction.votes.impl == approx(loss_fraction.impl), 'Failed to verify loss to fraction, got {} expected {}'.format(result.loss_fraction.votes.pp(0), loss_fraction.pp(0))
|
||||
|
||||
yield 'Stage {}'.format(stage)
|
||||
|
||||
Reference in New Issue
Block a user