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Towards Semantic Web Mining. Bettina Berndt Andreas Hotho Gerd Stumme. Semantic Web Mining. Combination of Semantic Web and Web Mining Improve Web Mining using Semantic Web Improve Semantic Web using Web Mining. Overview. Web Mining Extracting Semantics from the Web

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Towards Semantic Web Mining

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Towards semantic web mining l.jpg

Towards Semantic Web Mining

Bettina Berndt

Andreas Hotho

Gerd Stumme


Semantic web mining l.jpg

Semantic Web Mining

  • Combination of Semantic Web and Web Mining

  • Improve Web Mining using Semantic Web

  • Improve Semantic Web using Web Mining


Overview l.jpg

Overview

  • Web Mining

  • Extracting Semantics from the Web

  • Exploiting Semantics for Web Mining

  • Mining the Semantic Web

  • Closing the Loop

  • Conclusion/Assessment


Web mining l.jpg

Web Mining

  • Discovers Local and Global Structure

  • Structured Data

  • Goals

    • Improvement of site design

    • Generate dynamic recommendations

    • Improve marketing

  • Main Areas

    • Web Content Mining

    • Web Structure Mining

    • Web Usage Mining


Content mining l.jpg

Content Mining

  • Type of Text Mining

  • Uses Tags

  • Detect co-occurrences

  • Event detection

  • Reconstruction of page content

  • Relations in a domain


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Web Structure Mining

  • WebPages as a whole

    • Uses hyperlinks

    • Identify relevance

  • Single Pages

    • Five types of Web Pages

      • Head Pages

      • Navigation Pages

      • Content Pages

      • Look up Pages

      • Personal Pages


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Web Usage Mining

  • Request by Visitors

  • Additional Structure

  • Unintended Relationships


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Web Mining


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Disadvantages of Web Mining

  • Content/Structure

    • False positives

    • Unused

    • Human understandable

    • Large amount of data

  • Usage

    • Usage tracked by urls

    • General concepts

    • Multiplicity of events and urls


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  • cooperateswith(X,Y)

  • cooperateswith(Y,X)

TOP

NAME

PERSON

PERSON

TITLE

PROJECT

COOPERATES

COOPERATES

--

--

WITH

WITH

Ontology

WORKS-IN

RESEARCHER

RESEARCHER

Semantic Web Mining

Andreas Hotho

WORKS-IN

DAMLPROJ

URI-SWMining

-

Relational

Metadata

URI-AHO

WORKS-IN

COOPERATES

COOPERATES

-

-

WITH

WITH

URI-GST

WWW


Outline l.jpg

Outline

  • Web Mining

  • Extracting Semantics from the Web

  • Exploiting Semantics for Web Mining

  • Mining the Semantic Web

  • Closing the Loop

  • Conclusion/Assessment


Extracting semantics l.jpg

Extracting Semantics

  • Ontology Learning

    • Learn structures of Ontologies

  • Instance Learning

    • Populates the Ontologies


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Extracting Semantics

  • Ontology Learning

    • Semi-automatic approach

    • Merging

      • FCA-Merge

      • TITANIC

  • Instance Learning

    • Information Extraction


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Outline

  • Web Mining

  • Extracting Semantics from the Web

  • Exploiting Semantics for Web Mining

  • Mining the Semantic Web

  • Closing the Loop

  • Conclusion/Assessment


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How can the semantic web help

with web mining ?


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Web Content/Structure Mining

  • Content Mining

    • Preprocess the input data

    • Apply heuristics

    • Creates a cluster

  • Web Structure Mining

    • Page Rank

    • Keyword Analysis

    • CLEVER


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Conceptual Clustering of Emails (and Bookmarks)

using IE and Formal Concept Analysis for supporting navigation and retrieval.


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Web Usage Mining

  • Goal

    • Better understand user’s tendencies

  • Problem

    • Dynamic pages

    • How to take advantage of this?

      • Generate queries

      • Create usage paths

      • Classification scheme


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Advantages

  • Structured Model

  • Improve queries

    • Analyze single pages

    • Analyze ontologies

    • Users history


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Outline

  • Web Mining

  • Extracting Semantics from the Web

  • Exploiting Semantics for Web Mining

  • Mining the Semantic Web

  • Closing the Loop

  • Conclusion/Assessment


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How can web mining help

build the semantic web?


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Semantic Web/Structure Mining

  • Intertwined

  • Relational Data Mining

    • Looks for patterns

    • Classification, regression, clustering and associations

    • Challenges

      • Scalability

      • Distributed


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Semantic Web Usage Mining

  • Goal

    • Requested page = ontology entity

    • Log files

  • Advantages

    • Understand search strategies

    • Improve navigation design

    • Personalize


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Outline

  • Web Mining

  • Extracting Semantics from the Web

  • Exploiting Semantics for Web Mining

  • Mining the Semantic Web

  • Closing the Loop

  • Conclusion/Assessment


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Mining to Learn Ontologies

  • Establish a concept hierarchy

    • OntEx

  • Determine Association rules

    • Discover combinations of concepts


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Mining to Learn Ontologies


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Filling the Ontologies


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Use Ontology to Mine


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Conclusion/Assesment

  • Semantic Structures in the Web can help Web mining

  • Web Mining can build the Semantic Web

  • Combine the two together

  • Different Idea

  • Combination of Products


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Questions?


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