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Prof. Dr. Iryna Gurevych Dr. Delphine Bernhard, Johannes ... · PDF file Web 1.0 versus Web 2.0 Web 1.0 ! Web 2.0 DoubleClick --> Google AdSense mp3.com --> Napster Britannica...

Jun 25, 2020

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  • Knowledge Management for Web 2.0

    Prof. Dr. Iryna Gurevych

    Dr. Delphine Bernhard, Johannes Hoffart, Torsten Zesch

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 1

  • 1.

    2.

    Introduction to the topic

    Related projects at UKP Lab

    Outline

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 2

    3. Presentation of seminar topics

  • Obligatory Reading

    What Is Web 2.0

    Design Patterns and Business

    Models for the Next Generation of

    Software

    by Tim O'Reilly

    09/30/2005

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 3

  • What happened in Fall 2001?

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 4

  • Popularity of Web 2.0

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 5

  • Web 1.0 versus Web 2.0

    Web 1.0 ! Web 2.0

    DoubleClick --> Google AdSense

    mp3.com --> Napster

    Britannica Online --> Wikipedia

    personal websites --> blogging

    domain name speculation --> search engine optimization

    page views --> cost per click

    screen scraping --> web services

    publishing --> participation

    content management systems --> wikis

    directories (taxonomy) --> tagging („folksonomy“)

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 6

  • 05/05/08 | Computer Science Department | Ubiquitous Knowledge Processing Lab | 7/76

  • Central Principle of Web 2.0

    Harnessing Collective Intelligence

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 8

  • Harnessing Collective Intelligence

    !!Hyperlinking

    !!Yahoo!

    !!Google

    !!eBay

    !!Amazon

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 9

  • Hyperlinking

    !!Foundation of the web

    !!Users add new content, and new sites

    !!Bound in to the structure of the web by other users

    discovering the content and linking to it

    !!Much as synapses form in the brain, with

    associations becoming stronger through repetition or

    intensity, the web of connections grows organically as

    an output of the collective activity of all web users

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 10

  • Yahoo!

    !!The first great internet success story

    !!Born as a catalog, or directory of links, an

    aggregation of the best work of thousands, then

    millions of web users

    !!Moved into the business of creating many types of

    content

    !!A portal to the collective work of the net's users

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 11

  • Google

    !!Breakthrough in search

    !!Undisputed search market leader

    !!PageRank, a method of using the link structure of

    the web rather than just the characteristics of

    documents to provide better search results

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 12

  • eBay

    !!eBay's product is the collective activity of users

    !!Grows organically in response to user activity

    !!The company's role is as an enabler of a context in

    which that user activity can happen

    !!Competitive advantage from the critical mass of

    buyers and sellers, which makes any new entrant

    offering similar services significantly less attractive

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 13

  • Amazon

    !!The same products as competitors such as

    Barnesandnoble.com

    !!A science of user engagement

    !!More user reviews, invitations to participate in varied

    ways on virtually every page – and even more

    importantly, they use user activity to produce better

    search results

    !!Always leads with "most popular", a real-time

    computation based not only on sales but other factors

    that Amazon insiders call the "flow" around products

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 14

  • Further Web 2.0 Innovations

    !!Wikipedia

    !!del.icio.us

    !!Flickr

    !!Collaborative spam filtering

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 15

  • Wikipedia

    !!An online encyclopedia

    !!An entry can be added and edited by any web user

    !!A radical experiment in trust

    !!Eric Raymond's dictum (originally coined in the

    context of open source software) that “with enough

    eyeballs, all bugs are shallow”

    !!Among the top ten web sites 4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 16

  • Competencies of Web 2.0 Companies

    •!Services, not packaged software

    •!Control over unique, hard-to-recreate data sources

    that get richer as more people use them

    •!Trusting users as co-developers

    •!Harnessing collective intelligence

    •!Leveraging the long tail through customer self-

    service

    •!Software above the level of a single device

    •!Lightweight user interfaces, development models,

    AND business models

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 17

  • 1.

    2.

    Introduction to the topic

    Related projects at UKP Lab

    Outline

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 18

    3. Presentation of seminar topics

  • Related Projects at UKP Lab

    !!Semantic Information Retrieval using Wikipedia, Wiktionary

    !!Question Answering for E-Learning based on Social

    Question & Answer plattforms

    !!Wikulu – Self-organizing Wikis

    !!Theseus-TEXO: Knowledge-based Infrastructures for

    Internet of the Future (Web Services, Community Mining)

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 19

  • 4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 20

    Web 2.0 as Knowledge Resource

    for Natural Language Processing

    NLP applications

    !!???

    NLP applications

    !!Semantic Relatedness !! (Zesch et al., 2008)

    NLP applications

    !!Information Extraction !! (Ruiz-Casado et al., 2005)

    !!Information Retrieval !! (Gurevych et al., 2007)

    !!Named Entity Recognition !! (Bunescu & Pasca, 2006)

    !!Question Answering !! (Ahn et al., 2004)

    !!Text Categorization !! (Gabrilovich & Markovitch, 2006)

  • Wiktionary – Wikipedia‘s lexical companion

    !!Language

    !!Etymology

    !!Pronunciation

    !!Part-of-speech

    !!Word senses

    !!Synonyms

    !!Derived Terms

    !!Translations

    !!Abbreviations, Antonyms,

    Categories, Collocations,

    Examples, Glosses,

    Hypernyms, Hyponyms,

    Morphology, Quotations,

    Related terms, Troponyms 4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 21

  • Semantisches Information Retrieval

    8.10.2008 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 22

    Suche:

    Dienstreise

    ….

    … Geschäftsreise

    Gesuchtes Dokument:

  • Mining Wikipedia Revision History for

    Paraphrase Recognition

    4/20/09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 23

  • Automatic Question Answering for eLearning

    8.10.2008 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 24

  • Answer Retrieval and Summarization

    8.10.2008 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 25

    What are

    Internet

    Browsers

    Ranked list of answers: 1.!A web browser is a software

    application which … 2.!A web browser is a graphical

    interface that … 3.!The most commo