An introduction to our machine learning APIs (sentiment, political alignment, language detection, text tags, facial emotion recognition, and image features) using Python. Slater Victoroff (@sl8rv) walks us through two tutorials: (1) sorting images based on similarity using our Image Features API, and (2) creating a custom RSS feed using our Text Tags API. Our APIs are available with wrappers in node.js, R, Objective-C, Ruby, Java, and PHP here: https://github.com/IndicoDataSolutions Originally presented at PAPIs 2014, the first international conference on Predictive APIs and Apps.

1. Getting started with indico APIs [Python]
Tutorials:
1) Sorting images based on similarity
2) Creating a custom RSS feed

2. This tutorial

3. Getting Started
https://github.com/IndicoDataSolutions!
pip install indicoio
npm install indico.io
gem install indico

4. >>> from indicoio import image_features
>>> image_features (<image_array>)
[a1,!a2,!a3,!…]!
Image Features

5. Use case – Image Search

6. Steps to image search
1. Get images
2. Store image features
3. Distance Metrics
4. Querying

7. Example Code
https://github.com/
IndicoDataSolutions/
ImageSimilarity

8. Get images

9. Store image features
{url: image_features}
Import redis
Import indicoio
redis_server = redis.StrictRedis()
redis_server .set(url, indicoio.image_features(<array>))

10. Distance metrics

11. Querying
from scipy.spatial.distance import cosine
a = clicked_image
sorted([cosine(a, b) for b in all_images])

12. Steps to custom reddit
1. Access RSS feed
2. Categorization and thresholding
3. Basic frontend

13. Example Code
https://github.com/
IndicoDataSolutions/
RSSCustomization

14. Accessing RSS feed
import feedparser
from multiprocessing.pool import ThreadPool
feed = ‘http://www.reddit.com/.rss’
pool = ThreadPool(16)
entries = feedparser.parse(feed)[‘entries’]
entries = pool.map(parse, entries)

15. Categorization and thresholding
from indicoio import text_tags
def parse(entry):
return {
‘title’: entry[‘title’],
‘link’: entry[‘link’]
‘tag’: likely_tag(text_tags(entry[‘title’]))
}

16. Basic frontend
https://github.com/
IndicoDataSolutions/
RSSCustomization

17. stay in the loop
! indico.io