Ada.Matchers.BoWPoS.BagOfWords.RecalculateIDFs C# (CSharp) Метод

        public void RecalculateIDFs()
        {
            foreach (var term in Terms.Keys)
            {
                Terms[term].IDF = 0;
            }

            // Get all the document IDs.
            var totalDocs = new HashSet<uint>();
            foreach (var term in Terms.Values)
            foreach (var docID in term.DocumentIDsByTFs.Keys)
            {
                if (!totalDocs.Contains(docID))
                {
                    totalDocs.Add(docID);
                }
            }

            var totalDocCount = (float)totalDocs.Count;

            foreach (var term in Terms.Keys)
            {
                // How many documents contain the term?
                var docsFound = Terms[term].DocumentIDsByTFs.Count;

                Terms[term].IDF = (float)Math.Log(totalDocCount / docsFound, 2);
            }

            minipulatedSinceLastRecalc = false;
        }