public void ShouldMatchExpectedSupport(string item0, string item1, int expected)
{
var transactions = new TestTransactionsLoader().Load();
var result = transactions.Support(ImmutableHashSet.Create(item0, item1));
result.Should().Be(expected);
}
public void ShouldGenerateCandidates()
{
var transactions = new TestTransactionsLoader().Load().ToImmutableArray();
var result = transactions.ExtractItems();
Console.WriteLine(result.Format());
result.Count().Should().Be(5);
}
public void ShouldExtractFeatures()
{
var transactions = new TestTransactionsLoader().Load();
var features = transactions.ExtractFeatures().ToImmutableArray();
features.Select(set => set.Format()).ForEach(line => Console.WriteLine(line));
features.Count().Should().Be(5);
}
public void ShouldReturnProbabilityOfTwoItems(string item0, string item1, float expected)
{
var transactions = new TestTransactionsLoader().Load().ToImmutableArray();
var frequency = transactions.Frequency(new HashSet <string> {
item0, item1
});
frequency.Should().Be(expected);
}
public void ShouldFilterByFrequency(float minFrequency, int expected)
{
var transactions = new TestTransactionsLoader().Load().ToImmutableArray();
var features = transactions.ExtractFeatures();
var table = transactions.CalculateFrequencyTable(features);
var result = table.FilterByFrequency(minFrequency).ToImmutableArray();
result.Select(set => set.Format()).ForEach(line => Console.WriteLine(line));
result.Count().Should().Be(expected);
}
public void ShouldCalculateConfidence(string item0, string item1, float expected)
{
var transactions = new TestTransactionsLoader().Load().ToImmutableArray();
var result = transactions.Confidence(new HashSet <string> {
item0
}, new HashSet <string> {
item1
});
result.Should().Be(expected);
}
public void ShouldFilterByConfidence()
{
var transactions = new TestTransactionsLoader().Load().ToImmutableArray();
var features = transactions.ExtractFeatures();
var result = transactions
.GenerateCandidates(features, minConfidence: 1f);
result.Select(set => set.Format()).ForEach(line => Console.WriteLine(line));
result.Count().Should().Be(2);
}
public void ShouldReturnTheCorrectTable()
{
var transactions = new TestTransactionsLoader().Load().ToImmutableArray();
var items = transactions.ExtractFeatures();
var result = transactions.CalculateFrequencyTable(items).ToImmutableArray();
foreach (var line in result)
{
Console.WriteLine("item: {0}, support: {1}, frequency: {2}", line.Item.Format(), line.Support, line.Frequency);
}
}