NDLI: Strategies for lifelong knowledge extraction from the web

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Strategies for lifelong knowledge extraction from the web

Content Provider	ACM Digital Library
Author	Etzioni, Oren Banko, Michele
Abstract	The increasing availability of electronic text has made it possible to acquire information using a variety of techniques that leverage the expertise of both humans and machines. In particular, the field of Information Extraction (IE), in which knowledge is extracted automatically from text, has shown promise for large-scale knowledge acquisition. While IE systems can uncover assertions about individual entities with an increasing level of sophistication,alltext understanding -- the formation of a coherent theory from a textual corpus -- involves representation and learning abilities not currently achievable by today's IE systems. Compared to individual relational assertions outputted by IE systems, a theory includes coherent knowledge of abstract concepts and the relationships among them. We believe that the ability to fully discover the richness of knowledge present within large, unstructured and heterogeneous corpora will require a lifelong learning process in which earlier learned knowledge is used to guide subsequent learning. This paper introduces Alice, a lifelong learning agent whose goal is to automatically discovera collection of concepts, facts and generalizations that describe a particular topic of interest directly from a large volume of Web text. Building upon recent advances in unsupervised information extraction, we demonstrate that Alice can iteratively discover new concepts and compose general domain knowledge with a precision of 78%.
Starting Page	95
Ending Page	102
Page Count	8
File Format	PDF
ISBN	9781595936431
DOI	10.1145/1298406.1298425
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-10-28
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Machine reading Lifelong learning
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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