Paul Wilton from Ontoba demonstrates the BBC JUICER R&D APIs.

1. Powered by BBC Connected Studio
Seedhack 4.0

2. Paul Wilton (@pwilton)
Technical Architect
Ontoba (@Ontoba1)
www.ontoba.com

3. Juicer Data + APIs
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Approx 500k news articles – various news providers
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Concept APIs - find and lookup concepts
Each article semantically annotated with DBpedia
Concepts, Events and Storylines
News APIs - query news via the semantic annotations
– use SPARQL !

4. API Endpoints
ROOT : /bbc.api.mashery.com/juicer-ld-api/
Accept : application/json
Common API Query Parameters :
limit = {integer} - limits number of things returned
before = {yyyy-mm-dd} - restricts by article date
after = {yyyy-mm-dd} - restricts by article date
api_key = {your mashery key}

5. Signup for Mashery Key
http://bbc.mashery.com/
Live Examples
http://newshack.co.uk/tech-talks/juicer-apis/
Docs
http://bbc.mashery.com/docs/read/Home

6. Concept APIs
Find Concepts - OpenSearch Suggestions JSON
GET /concepts/tagged?q={ text search term }
Find Concepts - filtered by class
GET /concepts/tagged?q={ text }&class={ ontology class }
Example :
GET /concepts/tagged?q=goo&class=http://dbpedia.org/ontology/Organisation
GET a Concept
GET /concepts?uri=http://dbpedia.org/resource/Larry_Page

7. Get Concept Occurrences
ordered my most frequent first
GET /concepts/occurrences?type={ type URI }
Example
GET /concepts/occurrences?type=http://dbpedia.org/ontology/Person
&after=2013-10-01

8. Get Concept Co-Occurrences
Finds concepts co-occurring with the supplied concept
ordered by most frequently occurring
GET /concepts/co-occurrences?concept={ source concept URI }&type={ type URI }
Example
GET /concepts/co-occurrences?concept=http://dbpedia.org/resource/Barack_Obama&
type=http://dbpedia.org/ontology/Person&after=2013-10-01

9. Search News Articles
Full Text Search for Articles:
GET /search?q={ text phrase }
Example
GET /search?q=chemical weapons&limit=20&after=2013-09-01

10. Semantic Query for News Articles
Use SPARQL grammar to find articles
Exploit the DBpedia ontology
GET /articles?binding=articles&where={ sparql grammar, URL encoded }
Example clause, that finds articles tagged with companies in the aerospace
industry:
?articles cwork:tag ?thing .
?thing a <http://dbpedia.org/ontology/Company> .
?thing <http://dbpedia.org/ontology/industry>
<http://dbpedia.org/resource/Aerospace> .

11. Live Examples
http://newshack.co.uk/tech-talks/juicer-apis/
Signup for Mashery Key
http://bbc.mashery.com/
Find me tomorrow and ask me questions !
Paul Wilton @pwilton