introduction of the asv subproject report on recent state of work and other activities etraces...
TRANSCRIPT
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Introduction of the ASV SubprojectReport on recent state of work and other activities
eTRACES Sponsor MeetingLeipzig, 2012/05/07
Marco BüchlerNatural Language Processing Group
Department of Computer ScienceUniversity of Leipzig
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Marco Büchler 2
What do you do with a million books?
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Marco Büchler 3
We do not have any native speakers for ancient languages like ancient Greek and Latin ...
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Agenda
Scope of ULEI's subproject
Who is involved?
ACID for the eHumanities as a paradigm for successful projects
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Basics for ULEI's subproject
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A fundamental problem: How to find relevant information in massive data?
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Two initially associated documents
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Documents are linked with a direction
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Documents are linked with a direction: such as web links
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Documents are linked in both directions: A loop
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Detecting relevance: a document can be linked by more than one doc
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Detecting relevance: a document can be linked by more than one doc
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Detecting relevance on an entire digital library
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Computing relevance weights (by reliability) on an entire digital library
Source: http://en.wikipedia.org/wiki/PageRank
The name of this strategy is Google's PageRank algorithm.
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Some aspects about Google's PageRank algorithm
• Ranking is done by relevance weights (weighted links to a page)
• Benefit for humanities applications: – Ranking does not necessarily need term weights as done with tf.idf
• e. g. Shakespeare's „to be, or not to be“
In humanities relevant data, however, we do not have a link structure like in web based html files.
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A similar problem: Two initial documents with text re-use
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Given e. g. dating information: text re-use with direction I
Our assumption: A quotation always implies a given relevance of the quoted author
by the quoting author – either in a positive or negative way.
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Given e. g. dating information: text re-use with direction II
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Given e. g. dating information: text re-use with direction III
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An old discipline: Text re-use in traditional humanities
Manually produced record of text re-use.
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Some research objectives
In addition to Google's PageRank:– Differentiate by
• Text re-use temperature• Text re-use coverage
– Relevance by• high score • low score
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Some answers to the intial questions/statements
What do you do with a million books?– Cultural heritage of textual re-uses– Text re-use graphs for something
like a „Cultural Heritage aware PageRanking“
We do not have any native speakers for ancient languages like ancient Greek and Latin ...
- Crowd sourcing provides on historical texts qualitative results, however,
humanists are no native speakers - The „Cultural Heritage aware PageRanking“ approach aims to deal
with relevance given by native
Speakers even if they are not available, nowadays
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Who is involved?
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Active collaborators
eTRACES/ULEI(Prof. Dr. Gerhard Heyer)
'The Team'
Interface:projects(Dr. Uwe Crenze)
The business partner
Fragmentary texts(Dr. Monica Berti)
'The Humanist'
Perseus Digital Library(Prof. Dr. Gregory Crane)
'The Content Provider'
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„ACID for the eHumanities“
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A new paradigm for successful eHumanities projects
• The million dollar question:
How to manage an eHumanities project successfully?
• After 4 years of activities in the eHumanities, you need just four questions:
Acceptance: How do you get humanists' acceptance for your techniques?
Complexity: Understand the complexity of necessary subtasks! e. g.: What is the archetypus?
Interoperability: How can components or data interact with each other?
Diversity: Understand your data! e. g.: What does text re-use mean for your digital library?
The ACID paradigm for the eHumanities
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„ACID for the eHumanities“: Interoperability
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„ACID for the eHumanities“: (Data) Interoperability I
Perseus DdbDP (XML) vs. Epiduke (XML)
Source: Pansch, D. 2010, Data Integration Methods for Structural HeterogeneousData in an eHumanities' Context, Bachelor thesis, 2010.
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„ACID for the eHumanities“: (Data) Interoperability II
Source: Pansch, D. 2010, Data Integration Methods for Structural HeterogeneousData in an eHumanities' Context, Bachelor thesis, 2010.
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„ACID for the eHumanities“: (Data) Interoperability III
• Several kinds of interoperability issues on
– Horizontal:• Data level• Algorithm level• Tool/application level
– Vertical:• e. g. between data and algorithm
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„ACID for the eHumanities“: Diversity
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„ACID for the eHumanities“: (Node) Diversity
Understand your data: Understand the re-used text chunks.
( a knowledge thing)
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„ACID for the eHumanities“: (Relation) Diversity
Understand your data: Understand how text is re-used in your data.
(an experience thing)
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„ACID for the eHumanities“: Diversity - 6 levels of text re-use
Text re-use is about Text re-use is about unsupervised quotation detectionunsupervised quotation detection in textual data. in textual data.
- Level 1: - Level 1: Pre-processing Pre-processing (Cleaned and prepared data)(Cleaned and prepared data)
- Level 2: - Level 2: FeaturingFeaturing (Digital fingerprint of a re-use unit) (Digital fingerprint of a re-use unit)
- Level 3: - Level 3: Feature selectionFeature selection (Signature of a digital fingerprint) (Signature of a digital fingerprint)
- Level 4: - Level 4: Linking Linking (Match of re-use units that have at least one feature in (Match of re-use units that have at least one feature in
common)common)
- Level 5: - Level 5: Scoring Scoring (Weighting of linked re-use units)(Weighting of linked re-use units)
- Level 6: - Level 6: Post-processing Post-processing (e. g. post selection or views that depend on (e. g. post selection or views that depend on research research questions) questions)
Implemented in TRACER (Implemented in TRACER (http://etraces.e-humanities.net/TRACER):):
- Tool available in 2013- Tool available in 2013
- Teaching courses (full week) are planned for 2013- Teaching courses (full week) are planned for 2013
- More than one million permutations of implementations of the 6 levels - More than one million permutations of implementations of the 6 levels possible (05/2012)possible (05/2012)
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„ACID for the eHumanities“: Acceptance
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Interdisciplinary collaborations: The problem!
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Computer Scientists: Change your view for understanding humanists
How to get acceptance of humanists if text mining is a black box that can't be looked in?
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What we need!
Transparency: How to provide user-friendly insights into complex mining techniques and machine learning?
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Jumping into the mining process: Level 0 – Initial request
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Jumping into the mining process: Level 1 - Preprocessing
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Jumping into the mining process: Level 2 - Featuring
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Jumping into the mining process: Level 3 - Selection
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Jumping into the mining process: Level 4 - Linking
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Jumping into the mining process: Level 5 - Scoring
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„ACID for the eHumanities“: Complexity
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„ACID for the eHumanities“: Complexity I
• Archetypus detection means to identify the origin of a thought or a chunk of text (or at least the earliest occurrence).
• Sentiment (Acceptance) detection means if a text passage is re-used in a „positive“ or „negative“ way
An example:• German: „Gleich und gleich gesellt sich gern.“• Englisch: „Like will to like.“
„Birds of a feather flock together.“ (“to bring like and like together”)
Question: How would/do you use this phrase regarding sentiments in
your daily life?
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„ACID for the eHumanities“: Complexity II
Hom. Od. 17 215-219:As he saw them, he spoke and addressed them, and reviled them in terrible and unseemly words, and stirred the heart of Odysseus: “Lo, now, in very truth the vile leads the vile. As ever, the god is bringing like and like together. Whither, pray, art thou leading this filthy wretch,1 thou miserable swineherd, ...
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„ACID for the eHumanities“: Complexity III
• German phrase: „jemanden auf's Dach steigen“• English (literally translated): „to climb onto someone's roof“• English (semantically translated): „to put someone down“,
„tell someone off“
• Understanding the example:– Goes back to a German tradition between 7th and 12th century– Young men went onto other's (and not following the rules of the
community ) roof in order to remove it.– Happened especially during (German) carnival and Shrove
Tuesday– There was no legal rule about it ...
– ... in early Middle-ages, however, this became fundamental part of early adaptions of constitutions
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„ACID for the eHumanities“: Complexity III
Article 13 of the recent German constitution
The home is invoilable.
Focus here: Constitution evolution task in different societies.
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„ACID for the eHumanities“: Complexity IV
Decision about online observation by the German government
Article 13: The home is invoilable. vs.
judgement to online observation by federal institutions in context of terrorism
... Das Schutzgut dieses Grundrechts ist die räumliche Sphäre, in der sich das Privatleben entfaltet [...]. Neben Privatwohnungen fallen auch Betriebs- und
Geschäftsräume in den Schutzbereich des Art. 13 GG [...]. Dabei erschöpft sich der Grundrechtsschutz nicht in der Abwehr eines körperlichen Eindringens in die Wohnung. Als Eingriff in Art. 13 GG sind auch Maßnahmen anzusehen, durch die staatliche Stellen sich mit besonderen Hilfsmitteln einen Einblick in Vorgänge
innerhalb der Wohnung verschaffen, die der natürlichen Wahrnehmung von außerhalb des geschützten Bereichs entzogen sind. Dazu gehören nicht nur die
akustische oder optische Wohnraumüberwachung [...], sondern ebenfalls etwa die Messung elektromagnetischer Abstrahlungen, mit der die Nutzung eines
informationstechnischen Systems in der Wohnung überwacht werden kann. Das kann auch ein System betreffen, das offline arbeitet. ...
Source: http://www.bundesverfassungsgericht.de/entscheidungen/rs20080227_1bvr037007.html
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„ACID for the eHumanities“: Complexity of text re-use research
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Complex tasks do strongly need collaborations!
Google group for Historical Text Re-use:http://groups.google.com/group/historical-text-re-use
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Summary
Scope of ULEI's subproject
Who is involved?
ACID for the eHumanities as paradigm for successful projects
From mission to vision
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eTRACES/ASV: 'The team'
Gerhard Heyer
Maria Moritz Petra Gamrath
Thomas Efer
Christian Kötteritzsch
Marco Büchler
Frederik Baumgardt