public void IDFTest()
{
var doc1 = new Document(new List <string>()
{
"АААА", "АААА", "ББББ", "ЗАС"
});
var doc2 = new Document(new List <string>()
{
"АААА", "АААА", "ББББ", "ББББ", "ББББ"
});
var documents = new Dictionary <string, Document>
{
["1"] = doc1,
["2"] = doc2
};
IDF idfEvaluator = new IDF(documents);
Assert.AreEqual(Math.Log10((double)documents.Count / 2), idfEvaluator.Evaluate(doc1[0]), eps);
Assert.AreEqual(Math.Log10((double)documents.Count / 2), idfEvaluator.Evaluate(doc1[2]), eps);
Assert.AreEqual(Math.Log10((double)documents.Count / 1), idfEvaluator.Evaluate(doc1[3]), eps);
}
