This document summarizes a presentation about Acre, which allows running server-side JavaScript on Freebase.com. It introduces Freebase as a topic database containing over 11 million topics. It describes MQL, the JSON query language used to query Freebase. Examples are provided to find Russian cosmonauts and tropical storms from the 1990s. The presentation also discusses hosting apps on FreebaseApps.com and using Acre's templating language and widgets like suggestion.

1. Acre: Server-side JavaScript
on Freebase.com
San Francisco JavaScript Meetup #9
at CBS Interactive
Will Moffat

2. The Short Pitch
Freebase: a topic DNS

3. 11M topics - Actresses (37,079)

4. Cheeses (488)

5. Football Players (16,568)

6. TV Programs (33,630)
arrested_develop

7. MQL: a JSON query language
“Russian cosmonauts”

8. MQL: a JSON query language
“Russian cosmonauts”
[{
"type": "/spaceflight/astronaut",
"name": null,
"/people/person/nationality": "russia"
}]

9. MQL: a JSON query language
“Russian cosmonauts”
http://api.freebase.com/api/service/mqlread?query=
[{
"type": "/spaceflight/astronaut",
"name": null,
"/people/person/nationality": "russia"
}]

10. MQL: a JSON query language

11. MQL: a JSON query language
“Russian cosmonauts”

12. Acre: Server Side JavaScript for Freebase
Hosted app server: freebaseapps.com
Runs untrusted user code
Sandboxed
instruction counting
memory, time quotas

13. Acre: for open data apps
Oauth - talk to flickr, Google, Netflix, etc
Acre Template Language
Client-side widgets: Freebase Suggest

14. View Source comes to web apps

16. FreebaseApps.com

17. Thank you!
freebase.com
http://www.slideshare.net/tag/freebase
#freebase on freenode.net

18. Keys: more examples of web ids
Will Smith
(Actor)

19. Keys: more examples of web ids
/index.html?curid=154698 Will Smith
(Actor) /people/s/will_smith
/name/nm0000226
/RoleDisplay/86971
/BandsAndArtists/S/Smith,_Will
/artist/Will+Smith
willsmith.com
/WillSmith
/artist/Will+Smith
/music/Will+Smith
/Will-Smith/e/B000APUOJC

20. Slicing and dicing data using MQL
“Tropical storms in the 90s”
[{
"type": "/meteorology/tropical_cyclone",
"name" : null,
"formed>=" : "1990",
"a:formed<=": "2000"
}]

21. MQL: sorting
“French actresses born pre-WWII”
[{
"type": "/film/actor",
"name": null,
"/people/person/gender": "female",
"/people/person/date_of_birth": null,
"/people/person/date_of_birth<=": "1939",
"/people/person/nationality": "France",
"sort": "/people/person/date_of_birth"
}]