.sentiment(params, function (err, response) {
  if (err)
    console.log('error:', err);
  else
    console.log(JSON.stringify(response, null, 2));
});</code></pre><h3>Alchemy Vision</h3><p><a href="http://www.alchemyapi.com/products/alchemyvision">Alchemy Vision</a> uses deep learning innovations to understand a picture's content and context. It sees complex visual scenes in their entirety —without needing any textual clues— leveraging a holistic approach to understanding the multiple objects and surro