Building taxonomies from the ground-up

hurriedtinkleΤεχνίτη Νοημοσύνη και Ρομποτική

15 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

81 εμφανίσεις

Building taxonomies from the
ground
-
up


Prakash Govindarajulu

Managing Consultant

RealTech Inc


prakashgovind@realtechinc.com

781
-
883
-
8338

RealTech Inc.

Taxonomy and Semantics


Why taxonomies?


How can they influence semantics?


Bottom
-
up methodology for building them


Search

Taxonomy

Semantic

System

RealTech Inc.

P2P Communication



inherent semantics

Richness of Dialog, opportunity to:


-
Clarify context
-

Clarify query
-

Refine query
-

Answer if known

RealTech Inc.

The Semantic Problem

Information

Systems

The semantic problem:

-

Knowledge representation
-

Capturing domain expertise

-

Access
ing knowledge without loss of richness of dialog

RealTech Inc.

Terminology:

data, information, knowledge


Data:
any fact



Metadata/Information:


the act or fact of informing.



Data about data


Provides context


Relationship with other data objects



Knowledge:

the fact or state of knowing; the perception of fact or truth


Interpreted data, “understands” data and information to refine or
fulfil a query


Experiential data


Data

Metadata

Knowledge

RealTech Inc.

“Knowledge” Representation
Today

Systems

With

Data

(documents,

Database

Wikis

blogs)

Information

Access

Systems

(Search)

RealTech Inc.

Search


Yet Another Index?

Systems

With

Data

(documents,

database)

Information

Access

Systems

(Search)

Index

RealTech Inc.

Challenges

Systems

With

Data

(documents,

database)

Information

Access

Systems

(Search)



User’s perspective is not well understood




Search relevancy therefore suffers




How can related information be presented?




Solution approach: Taxonomy


Index

RealTech Inc.

Taxonomy anyone?

From digg.com 6/8/07

RealTech Inc.

Taxonomy


Classification

Classification:

Categories

&

Subcategories

RealTech Inc.

Taxonomy


Guided Navigation

Perspectives

or

Facets

RealTech Inc.

Building Taxonomy


the
Human Element

Systems

With

Data

(documents,

database)

System

With

Metadata

(Taxonomy)

Information

Access

Systems

(Search)

Human

Element

Consensus

Governance

RealTech Inc.

Taxonomy Guidelines …1

System with

Metadata



Taxonomy

Management

System

Human

Element

-

Audience: Know thy user for


they are not Thee


-

Harmony of Purpose


-

Communication


Listening


Understanding


Consensus vs majority


-

Metadata for data


-

Metadata for metadata


-

Governance


RealTech Inc.

Taxonomy Guidelines …2

System with

Metadata



Taxonomy

Management

System

Human

Element

Jerusalem Artichokes




The OTHER Category

Courtesy: Wikipedia

RealTech Inc.

Taxonomy Guidelines …3

System with

Metadata



Taxonomy

Management

System

Human

Element

Defining relationships among

metadata and data elements:


First step toward semantics


Vehicle

Manufactured
-
in

CITY

EMISSION

RULES

Applies
-
To

Observed
-
In

RealTech Inc.

Taxonomy Guidelines …4

System with

Metadata



Taxonomy

Management

System

Human

Element

-

Knowledge worker Participation


-

Buy
-
in from management


-

Buy
-
in from other affected


departments

RealTech Inc.

TaxoConsolidator

Master Taxonomy

Source 1

Source 2

TaxoConsolidator allows user to create a Master taxonomy

by combining (adding and merging through dragndrop)

individual taxonomies created

by knowledge workers


Courtesy: RealTechInc

RealTech Inc.

Wordmap


Taxonomy
Management System

Creating and maintaining taxonomies

Using Wordmap

Courtesy: Earley & Associates

RealTech Inc.

Moving toward semantics


Understand your audience


Define the domain of problems clearly


Need for robust representation of data, information in
that domain


Involve all relevant knowledge workers


Create a taxonomy


with metadata and relationships


Expose and use the taxonomy in systems enterprise
wide


Need for a flexible rules and inference engines to
interpret data and discover related “knowledge”


RealTech Inc.

Next Steps toward semantics

Enterprise

Systems

(documents,

database)

Taxonomy

Mangement

System

(Taxonomy)

Information

Access

Systems

(Search)

Human

Element

Rules

Inference

Engines

(Semantic

Interpreter)

RealTech Inc.

New Tools for Taxonomy


New Tools

-

TaxoBuilder


term extraction tool and
individual taxonomy construction tool

-
TaxoConsolidator


consolidates individual
taxonomies

-
Wordmap from E&A

RealTech Inc.

Summary


Search and understanding user request
through query semantics


Represent your information through
taxonomies as a fulcrum for all information
management in enterprise


Build semantic interpreters of relationships
and metadata to complement search