• Skip to primary navigation
  • Skip to main content
SRI logo
  • About
    • Press room
    • Our history
  • Expertise
    • Advanced imaging systems
    • Artificial intelligence
    • Biomedical R&D services
    • Biomedical sciences
    • Computer vision
    • Cyber & formal methods
    • Education and learning
    • Innovation strategy and policy
    • National security
    • Ocean & space
    • Quantum
    • QED-C
    • Robotics, sensors & devices
    • Speech & natural language
    • Video test & measurement
  • Ventures
  • NSIC
  • Careers
  • Contact
  • 日本支社
Search
Close
Artificial intelligence publications January 1, 1997

Using grammatical inference to improve precision in information extraction

Citation

Copy to clipboard


Freitag D. Using grammatical inference to improve precision in information extraction, in Proceedings of the ICML-97 Workshop on Automata Induction, Grammatical Inference, and Language Acquisition, 1997.

Abstract

The field of information extraction (IE) is concerned with applying natural language processing (NLP) and information retrieval (IR) techniques to the automatic extraction of essential details from text documents. We are exploring the use of machine learning methods for IE. While the most promising methods we have developed perform well for problems defined over a collection of electronic seminar announcements, they are imprecise in their identification of the boundaries of relevant text fragments (fields). Here, we entertain the idea of using grammatical inference (GI) methods to learn the appropriate form of a field. We describe one method for translating raw text into an abstract alphabet suitable for GI, and show that, by combining one IE learning method with the resulting inferred grammars, large improvements in precision can be realized for some fields.

↓ Download PDF

Share this

How can we help?

Once you hit send…

We’ll match your inquiry to the person who can best help you.

Expect a response within 48 hours.

Career call to action image

Make your own mark.

Search jobs

Our work

Case studies

Publications

Timeline of innovation

Areas of expertise

Institute

Leadership

Press room

Media inquiries

Compliance

Careers

Job listings

Contact

SRI Ventures

Our locations

Headquarters

333 Ravenswood Ave
Menlo Park, CA 94025 USA

+1 (650) 859-2000

Subscribe to our newsletter


日本支社
SRI International
  • Contact us
  • Privacy Policy
  • Cookies
  • DMCA
  • Copyright © 2022 SRI International