Remove redundant class Util.CognitiveTextAnalyzer

Author: Frank Li (Wicresoft North America Ltd)

samples/CrawlFeaturizer/ActionFeaturizer/CognitiveTextAnalyticsFeaturizer.cs

@@ -1,5 +1,6 @@
-using CrawlFeaturizer.Model;
-using CrawlFeaturizer.Util;
+using Azure;
+using Azure.AI.TextAnalytics;
+using CrawlFeaturizer.Model;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
@@ -13,11 +14,11 @@ namespace CrawlFeaturizer.ActionFeaturizer
     /// </summary>
     public class CognitiveTextAnalyticsFeaturizer : IActionFeaturizer
     {
-        private CognitiveTextAnalyzer cognitiveTextAnalyzer = null;
+        private readonly TextAnalyticsClient textAnalyticsClient = null;
 
-        internal CognitiveTextAnalyticsFeaturizer(CognitiveTextAnalyzer cognitiveTextAnalyzer)
+        internal CognitiveTextAnalyticsFeaturizer(TextAnalyticsClient textAnalyticsClient)
         {
-            this.cognitiveTextAnalyzer = cognitiveTextAnalyzer;
+            this.textAnalyticsClient = textAnalyticsClient;
         }
 
         /// <summary>
@@ -32,15 +33,15 @@ await Task.WhenAll(actions.Select(async a =>
                 string content = $"{metadata.Title ?? string.Empty} {metadata.Description ?? string.Empty}";
 
                 // Get key phrases from the article title and description
-                IReadOnlyCollection<string> keyPhrases = await cognitiveTextAnalyzer.GetKeyPhrasesAsync(content);
+                Response<KeyPhraseCollection> keyPhrases = await textAnalyticsClient.ExtractKeyPhrasesAsync(content);
 
                 // Create a dictionary of key phrases (with a constant values) since at this time we do not support list of strings features.
-                var keyPhrasesWithConstValues = keyPhrases.ToDictionary(x => x, x => 1);
+                var keyPhrasesWithConstValues = keyPhrases.Value.ToDictionary(x => x, x => 1);
                 a.Features.Add(new { keyPhrases = keyPhrasesWithConstValues });
 
                 // Get sentiment score for the article
-                double? sentiment = await cognitiveTextAnalyzer.GetSentimentAsync(content);
-                a.Features.Add(new { sentiment });
+                DocumentSentiment sentiment = await textAnalyticsClient.AnalyzeSentimentAsync(content);
+                a.Features.Add(new { sentiment.ConfidenceScores });
             }
             ));
         }

samples/CrawlFeaturizer/Program.cs

@@ -59,7 +59,7 @@ private static void Main(string[] args)
             TextAnalyticsClient textAnalyticsClient = new TextAnalyticsClient(new Uri(CognitiveTextAnalyticsEndpoint), new AzureKeyCredential(CognitiveTextAnalyticsAPIKey));
 
             // Initialize the Cognitive Text Analytics actions featurizer
-            IActionFeaturizer actionFeaturizer = new CognitiveTextAnalyticsFeaturizer(new CognitiveTextAnalyzer(textAnalyticsClient));
+            IActionFeaturizer actionFeaturizer = new CognitiveTextAnalyticsFeaturizer(textAnalyticsClient);
 
             var newsActions = new List<RankableAction>();