View source for GATE track 1 session

A full week of learning GATE text mining/information extraction language processing and talks. [http://gate.ac.uk/wiki/TrainingCourseAug2010/ Session wiki]

[[File:GATE_screenshot.png|900px|GATE developer screenshot]]

GATE is written in Java and very Java centric. This makes it portable, fast, and heavyweight. A programming library is available.  It's 14 years old and has many users and contributors.

= Using GATE developer =

* GATE developer is used to process sets of Language Resources in Corpus using Processing Resources. They are typically saved to a serialized Datastore.
* ANNIE, VG (verb group) processors.
* Preserve formatting embeds tags in HTML or XML.
** Different strengths using GATE's graph (node/offset) based XML vs. preserved formatting (original xml/html)

= Information Extraction =

* IR - retrieve docs
* IE - retreive structured data

* Knowledge Engineering - rule based
* Learning Systems - statistical

Old Bailey IE project  - old english (Online)

* POS - assigned in Token (noun, verb, etc)

* Gazateer - gotcha, have to set initialization parameter listsURL before it's
loaded. Must also "save and reinitialize."
* Gazeteer creates Lookups, then transducer creaties named entities
* Then orthomatcher (spelling features in common) coreference associates those

* Annotation Key sets and annotation comparing
** Need setToKeep key in Document Reset for any pre annotated texts

== Evaluation / Metrics ==

* Evaluation metric - mathmatically against human annotated
* Scoring - performance measures for annotation types

* Result types - Correct, missing, spurious, partially correct (overlapped)

* Tools > Annotations Diff - comparing human vs machine annotation

* Corpus > Corpus quality assurance - compare by type
* (B has to be the generated set)

* Annotation set transfer (in tools) - transfer between docs in pipeline
** useful for eg html that has boilerplate

=== To investigate ===

* markupAware for HTML/XML (keeps tags in editor)
* AnnotationStack
* Advanced Options

{{Blikied|Aug 30, 2010}}