public double CalculateDistance(ITermWeightRepresentation termWeightRepresentation,
TermsCollection termsCollection)
{
double sum = 0;
foreach (string term in termsCollection.Terms)
{
sum += Math.Pow(termWeightRepresentation.TermWeight(term), 2);
}
return Math.Sqrt(sum);
}
public TfIdfIndexer(IEnumerable<Document> documents)
{
_idf = new Idf(documents.Select(x => new BagOfWords(x)));
_tfIdfWithDocuments =
documents.Select(x => new TfIdfWithDocument(new TfIdf(new Tf(new BagOfWords(x)), _idf), x));
_termsCollection = new TermsCollection();
foreach (Document document in documents)
{
_termsCollection.AddDocument(document);
}
}
private void InitializeSearcherWithStemmer()
{
_termsCollection =
new TermsProvider(ProvideStemmer())
.LoadFile(
Path.Combine(
AppDomain.CurrentDomain.BaseDirectory,
KeywordsFilePath));
_documentPurer = new DocumentPurer(_termsCollection);
IEnumerable<ExtendedDocument> documents = new DocumentsProvider(ProvideStemmer(), _documentPurer).Read(Path.Combine(
AppDomain.CurrentDomain.BaseDirectory,
DocumentsFilePath));
_tfIdfIndexer = new TfIdfIndexer(documents, _termsCollection);
}
public DocumentPurer(TermsCollection termsCollection)
{
_termsCollection = termsCollection;
}
public TfIdfIndexer(IEnumerable<Document> documents, TermsCollection termsCollection)
: this(documents)
{
_termsCollection = termsCollection;
}