Text Analytics in Action:Using Text Analytics as a Toolset

TBC 4:15 p.m. - 5:00 p.m.

Marjorie HlavaSemantic enrichment / Semantic

Fingerprinting

Abstract

• Big data inferences are increasingly used to mine huge heaps of data.

• The applications are endless. • However, those inferences do not work well when many

lines go to a single bubble. The lines and relationships must be drawn between concepts, not simply between words.

• Using the text analytics is a powerful tool, but it is a means to an end, not the end itself.

• The important work is in the interpretation of the data. • This session outlines a highly accurate and efficient approach

and provides a case study of the application.

Outline of the talk

• Using text analytics in term extraction– 3 examples– Pattern recognition– String tagging– Taxonomy control

• Achieving Synonymy• Now what do I do with it?

Term clouds

• Good place to start• Show concept landscape• Basis =

– Levenshtein distances– N-grams

• Redundant concepts, separately shown• No disambiguation• Not direct XML tagging

Sample article

Normal text extraction

Near conceptual synonyms

Nonsensical suggestions

Small Taxonomy

Near synonym, conceptual duplicate

Refined presentation

Dependent concepts

Ontological dependencies

Achieving Synonymy

• Find like concepts• Merge the terms• Choose a preferred form• Build term record

– Hierarchy– Equivalence– Associative

Overview, Upload 7K documents, search for text string, add a tag, “Columbia”

“Colombian” – no stemming

Same document – different terms

Colombiana – record overlap

“FARC” – No Synonymy

“People’s Armed Forces of Colombia”, i.e., FARC, lacks synonymy, some doc overlap

Tag suite, no hierarchy, no equivalence, no combining

tags for synonymy

Disambiguation

Bridge Structure

Bridge Dentistry

Bridge Game

Bridge Concept

Now what do I do with it?

• Tag documents– Consistently– Even depth of treatment– Full breadth of conceptual area

• Insert concepts in full text or as linked data• Implement in search• Use for internal statistics and analysis• Track industry trends• Create semantic fingerprints

The AIP Thesaurus

Hierarchy TermRecord

The AIP Thesaurus: Rulebase

This article is about (among other things)degenerate stars.

The text string “degenerate stars” occurs zerotimes in the text of the article.

But since the rulebase is tuned to understandthat when certain other words appear nearthe text “star”or “stars” it was correctly indexed.

The AIP Thesaurus: Rulebase

If the word “star” or “stars” appears inthe same sentence as “degenerate” or“compact” MAI applies the term “Degenerate stars” instead ofjust using “Stars”

The AIP Thesaurus: Applications

Listing of the AIP Thesaurus terms in JATS. Includes the term, keyword-ID, weight, code.

Inline tagged terms (denoted by the highlighting). The keyword ID (kwd1.4) corresponds with the name in the previous screenshot.

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Taxonomy Driven Search Presentation

Navigate the full taxonomy “tree”

BROWSE

Auto-completion using the taxonomy

Guide the user

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Taxonomyview

ThesaurusTerm Record

view

Suggested taxonomy descriptors

34

Visualization Strategies

MatrixVisualization

Software

Pattern AnalysisDomain Associations

Pattern AnalysisGap Analyses

Summary

• Taxonomy tool box• Text extraction / mining for terms• Gather synonyms• Disambiguate terms• Look for gaps and over coverage• Map all conceptual groupings

– Hierarchical, Associative, Equivalence• Apply to content• Leverage knowledge of the collection

Thank you

Marjorie M.K. Hlava, PresidentAccess Innovations

505-998-0800mhlava@accessinn.com

The Semantic Enrichment CompanySMART CONTENT

About Access InnovationsAccess Innovations are experts in content creation, enrichment, and conversion services. We provide services to semantically enrich and tag raw text into highly structured data. We deliver clean, well-formed, metadata-enriched content so our clients can reuse, repurpose, store, and find their knowledge assets. We go beyond the standards to build taxonomies and other data control structures as a solid foundation for your information. Our services and software allow organizations to use and present their information to both internal and external constituents by leveraging search, presentation, and e-commerce. We change search to found!

Quick Facts• Founded in 1978• Headquartered in Albuquerque, NM• Privately held• Delivered more than 2000 engagements