private void showlog()
        {
            try
            {
                var database = classifier.FeatureCategoryCombinations;

                var query = database.OrderBy(d => d.Key.Key).ThenBy(d => d.Key.Value);

                ObservableCollection <Record>         db_records    = new ObservableCollection <Record>();
                ObservableCollection <CategoryRecord> db_categories = new ObservableCollection <CategoryRecord>();
                foreach (var item in query)
                {
                    db_records.Add(new Record {
                        Word = item.Key.Key, Category = item.Key.Value, Count = item.Value
                    });
                }
                foreach (var category in classifier.Categories())
                {
                    db_categories.Add(new CategoryRecord {
                        Category = category
                    });
                }
                dataGridDataBase.ItemsSource   = db_records;
                dataGridCategories.ItemsSource = db_categories;
                labelDataBaseCount.Content     = "Кількість записів в базі: " + db_records.Count;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }