score individual words in sentiment analysisw

sentiment/model/model.go

@@ -20,5 +20,19 @@ func init() {
 
 func Analyze(text string) float64 {
 	an := model.SentimentAnalysis(text, sentiment.English)
-	return float64(an.Score)
+
+	// no words, just return whats scored
+	if len(an.Words) == 0 {
+		return float64(an.Score)
+	}
+
+	// take each word score then divide by num words
+	var total float64
+
+	for _, word := range an.Words {
+		total += float64(word.Score)
+	}
+
+	// get the overall score
+	return total / float64(len(an.Words))
 }

sentiment/subscriber/subscriber.go

@@ -26,7 +26,7 @@ func EnrichPost(ctx context.Context, post *pb.Post) error {
 	score := model.Analyze(post.Title)
 	post.Metadata["sentiment"] = fmt.Sprintf("%.1f", score)
 
-	logger.Infof("Setting score %.1f for post %v", score, post.Title)
+	logger.Infof("Setting score %.1f for post '%v'", score, post.Title)
 
 	// now save the post
 	PostsClient.Save(ctx, &pb.SaveRequest{