Both magnitude and score are important in analyzeSentiment API

[CloudApiStudy]

Hi,

I come from a research team which works on bugs in real-world applications.

I want to make a report about a potential functionality improvement in your project.

In file (webapp/app_folder/routes.py), you call analyzeSentiment API to judge the sentiment of text/document. However, magnitude is also an important metric: it reveals how strong the emotion is, while score reveals whether the emotion is positive/negative. When the magnitude is small, the emotion should be neutral even if |score| > 0.2. More details could be found in the official document.

Perhaps someone might be able to confirm if these seem reasonable. Also, if so, the fix seems like it would be pretty straightforward, and I’m happy to create a pull request if that will be helpful.

If you are not offended by it, we may include your response as a percentage number (e.g. xx% of applications faces xx problem, and xx% of them confirms it) in our research paper.

Thanks.

[beekarthik]

Sure I built this at a hackathon and was scrambling to finish it and I would appreciate it if you could help me implement magnitude into the sentiment analysis.

[CloudApiStudy]

Thanks a lot for your response!

I tried to make a push, but failed. So I paste my fixing on webapp/app_folder/routes.py here.

@app.route('/journalentry', methods=['Get', 'POST'])
def journalentry():
    if not current_user.is_authenticated:
        return redirect(url_for('register'))
    form = JournalForm()
    if form.validate_on_submit():
        text = form.text.data
        # get_sentiment in main.py will apply an average to it, while returning two
        # values and compute average seperately doesn't make sense.
        # So I use a multiply here.
        result = lang_processor.sample_analyze_sentiment(text).document_sentiment
        sentiment = result.score * result.magnitude
        post = Post(sentiment=sentiment, user_id=current_user.id)
        db.session.add(post)
        db.session.commit()
        return redirect(url_for('analytics'))
    return render_template('journal-entry.html', title='Entry', form=form)

@app.route('/analytics')
def analytics():
    if not current_user.is_authenticated:
        return redirect(url_for('login'))
    myposts = Post.query.filter_by(user_id=current_user.id).all()
    total = 0
    for post in myposts:
        total+=post.sentiment
    avg = total/len(myposts)

    # I also changed the threshold here
    message = ''
    if avg < -0.5:
        message = '''Your posts show that you might not be going through the best of time.'
                    Maybe you should seek help and talk about it with a loved one or medical professional'''
    elif avg < 1:
        message = '''Your posts show that you are having some decent times! Here's to many more happy days'''
    else:
        message = '''Your posts show that you are having some AMAZING days! Enjoy them to the fullest!
                    This is what life is about!'''
    return render_template('analytics.html',avg=avg, message=message)