Difference between revisions of "Vulcan/MeetingNotes/Aug16 2013"
From Knowitall
(→Agenda) |
|||
Line 1: | Line 1: | ||
+ | == Notes == | ||
+ | |||
+ | * Greg -- Own evidence finder. | ||
+ | |||
+ | * Store sentences with axioms. | ||
+ | |||
+ | * Figure out how to do procedural escapes in Tuffy. | ||
+ | |||
+ | * Mid next week figure out an estimate for when we will have a system that works on one or five examples. | ||
+ | |||
+ | * Get a knowledge spec: | ||
+ | <blockquote> | ||
+ | * isa, partOf, etc. | ||
+ | * Don't reimplement. Find resources. | ||
+ | </blockquote> | ||
+ | |||
+ | * Stephen to take lead on definition extractor. | ||
+ | <blockquote> | ||
+ | * Send Stephen literature and other material for definition processing. | ||
+ | |||
+ | </blockquote> | ||
+ | * What are the research problems? | ||
+ | <blockquote> | ||
+ | * Definitions extractor | ||
+ | * Reading rules from text. | ||
+ | * Abductive reasoning | ||
+ | * Procedural escapes for textual matching. | ||
+ | </blockquote> | ||
+ | |||
+ | |||
== Agenda == | == Agenda == | ||
* Update | * Update |
Revision as of 21:41, 16 August 2013
Notes
- Greg -- Own evidence finder.
- Store sentences with axioms.
- Figure out how to do procedural escapes in Tuffy.
- Mid next week figure out an estimate for when we will have a system that works on one or five examples.
- Get a knowledge spec:
- isa, partOf, etc.
- Don't reimplement. Find resources.
- Stephen to take lead on definition extractor.
- Send Stephen literature and other material for definition processing.
- What are the research problems?
- Definitions extractor
- Reading rules from text.
- Abductive reasoning
- Procedural escapes for textual matching.
Agenda
- Update
- System architecture
- Plan for Greg
- Processing text collections (definitions, study guide etc.) using Open IE and import into Solr.
- Converting WordNet and CNC to Tuffy axiom format and import into Postgres.
- Convert scored assertions into a format that is acceptable to Vulcan's evaluation framework.
Long term plan: Greg will be responsible for inference (online) components and Niranjan will focus on the offline components (generating axioms and rules) and experimentation.
- Experiment/Evaluation plan
Update
- System development ( Details on architecture and status)
- 1. Online inference components implemented.
- Proposition generator -- Extract tuples from input sentence and convert into a proposition.
- Evidence finder -- Tuple matching over Open IE Clueweb data.
- MLN Inference -- A wrapper around Tuffy's MLN inferencer.
- 2. Offline components -- axioms and rule generation -- NOT implemented.
- 3. Planning to use Tuffy MLN Inference system directly.
Why Tuffy and not Jena or another inference engine? Why not Alchemy?
- Inference engines such as Jena/OWLim don't directly support multiple inference paths. Community's response is to suggest Datalog/prolog implementations.
- Tuffy supports MLN capabilities in Alchemy but is orders of magnitude faster (what takes 6 hours in Alchemy takes 2 minutes in Tuffy).
- Experiments and Evaluation
Not ready to do evaluation yet but here are some useful details.
- 1. Framework: Vulcan has a good evaluation interface setup. We will use this for starters. (Example output from the evaluation framework.)
- 2. Data: Training/Test splits set up by Vulcan. The questions cover 4-12th and AP exams.
Training = 474 questions.
Test = 290 questions.
Training data distribution and Vulcan's current performance:
Grade All Questions #Mult.Choice and
Non-diag. (MC-ND)Vulcan Performance
on MC-ND4th grade 249 108 55.09% 8th grade 476 125 55.07% 12th grade 446 160 25.83% AP 116 81 45.68% All 1287 474
- 3. Method: Input sentences that correspond to each assertion. Score assertions using our system and submit to Vulcan's web interface.