private GroupedQueryResults GetSimilaritiesUsingBatchedStrategy(Hashes queryHashes, QueryConfiguration configuration, IModelService modelService)
{
var matchedSubFingerprints = modelService.Query(queryHashes, configuration);
return(queryHashes
.AsParallel()
.Aggregate(new GroupedQueryResults(queryHashes.DurationInSeconds, queryHashes.RelativeTo), (seed, queryFingerprint) =>
{
var matched = matchedSubFingerprints.Where(queryResult => QueryMath.IsCandidatePassingThresholdVotes(queryFingerprint.HashBins, queryResult.Hashes, configuration.ThresholdVotes));
foreach (var subFingerprint in matched)
{
double score = scoreAlgorithm.GetScore(queryFingerprint, subFingerprint, configuration);
seed.Add(queryFingerprint, subFingerprint, score);
}
return seed;
}));
}
private GroupedQueryResults GetSimilaritiesUsingBatchedStrategy(IEnumerable <HashedFingerprint> queryFingerprints, QueryConfiguration configuration, DateTime relativeTo, IModelService modelService)
{
var hashedFingerprints = queryFingerprints as List <HashedFingerprint> ?? queryFingerprints.ToList();
var result = modelService.Query(hashedFingerprints.Select(hashedFingerprint => hashedFingerprint.HashBins), configuration);
double queryLength = hashedFingerprints.QueryLength(configuration.FingerprintConfiguration);
var groupedResults = new GroupedQueryResults(queryLength, relativeTo);
Parallel.ForEach(hashedFingerprints, queryFingerprint =>
{
var subFingerprints = result.Where(queryResult => QueryMath.IsCandidatePassingThresholdVotes(queryFingerprint.HashBins, queryResult.Hashes, configuration.ThresholdVotes));
foreach (var subFingerprint in subFingerprints)
{
double score = scoreAlgorithm.GetScore(queryFingerprint, subFingerprint, configuration);
groupedResults.Add(queryFingerprint, subFingerprint, score);
}
});
return(groupedResults);
}
public void ShouldFilterExactMatches1()
{
bool result = QueryMath.IsCandidatePassingThresholdVotes(new[] { 1, 2, 3, 4, 5 }, new[] { 1, 2, 4, 7, 8 }, 3);
Assert.IsFalse(result);
}
