The ILK Suite of Text ToolsThe ILK Suite of Text Tools

Antal van den BoschILK Research Group

Faculty of Humanties, Tilburg Universityhttp://ilk.uvt.nl

Political Mashup MeetingAmsterdam, March 19, 2008

The ILK Text ToolsThe ILK Text Tools

• Text Quality Management– Text normalization– Spelling and grammar checking– Structured data cleaning

• Text Mining– Entity recognition– Relation finding

• Text Recommendation– Document recommendation– Expert recommendation

ILK Text Tools ApplicationsILK Text Tools Applications

• Cultural Heritage– Historical texts: Royal Library, DBNL– Entity recognition: Naturalis field

books– Structured data cleaning: Naturalis,

Beeld & Geluid, Army Museum, Meertens

• Service and media industries– Text mining: Textkernel B.V.– Recommendation: Trouw

TICCLTICCL

• Text-induced corpus cleanup– Martin Reynaert

• Robust, scalable method for finding wordform variants

• Sensitive to morphology and context

• Knowledge-free

Very large corpus

Linked word list

Dirty word list

indexes

TICCLTICCL

• hartstochtelijk hartstochtelyk hartstochtelyke hartstochtlijk hartstochtlijke hartstochtlyk hartstogtelijk hartstogtelijke hartstogtelijks hartstogtelyk

• wenkbrauwen wenkbraauwen wenkbraeuwen wenkbrauwen winkbraauwen wynbraauwen wynbrauwen

• Nederland NEDERLANDEN Nederlan Nederland Nederlanden Nederlander Nederlandse Nederlandt Nederlandts Nederlandze Nederlansch Nederlanse Nederlant Nederlants Neederland Neerland Neerlands Neerlandts Neerlants Netherlands

Other Text QM ToolsOther Text QM Tools

• Knowledge-free, corpus-driven

• Tokenization and sentence splitting

• Grammar checking– All d/t/dt errors

• gebeurd/gebeurt, word/wordt

– Inflectional and derivational errors

• Run-on/split detection• Word completion

Dirty corpus

Cleaner corpus

Disambiguator

MITCH: Mining Natural History

MITCH: Mining Natural History

• Piroska Lendvai, Marieke van Erp, Steve Hunt

• Field books and registers describe objects in many valuable facets, – In ambiguous, elliptic

language– In multiple languages– Describing animals,

people, biotopes, geographical names, time expressions

Cleaning and overhauling data

Cleaning and overhauling data

AuteurDetermi-

natorFamilie Genus Land

Bewaar-methode

(Daudin, 1802)

Bataguridae

AnolisCambodj

a(Schild droog)

(Schlegel)

G. vd. Boog

Colubridae

Indonesia

Schneider

M.S. Hoogmoe

dBufo Suriname

(Horst, 1883)

Tyler, M.J. Hylidae Litoria alcohol

GeophisGeophis??Rhabdo-Rhabdo-phis?phis?Actual value: Geophis

Expected: Rhapdophis

Entity type correctionEntity type correction

11

1 ex. Leptodactylus wagneri At base of tree on small island, primary forest, 20.45-22.00 u. RMNH 23865

Lithodytes lineatus, Brownsberg, aan voet, onder stuk rot hout, 13.07.1968, 8.45 u., RMNH 26076 Dorsolateraal strepen heldergeel, tekening op dijen vuurrood, veel feller als bij P. femoralis.

Gonyocephalus auritus Meyer, 3 ex. (1 juv.), Misool.Hoedt 1867.

RMNH 17656 Eleutherodactylus zeuctotylus 1 [vrouw] Lelygebergte, 4 km N.O. van airstrip, distr. Marowijne, Suriname, 19-VIII-1975, onder stuk hout, 610m, l [plus] d M. S. Hoogmoed.

Entity detection in fieldbooksEntity detection in fieldbooks

12

→ Number

1 ex. Leptodactylus wagneri At base of tree on small island, primary forest, 20.45-22.00 u. RMNH 23865

Lithodytes lineatus, Brownsberg, aan voet, onder stuk rot hout, 13.07.1968, 8.45 u., RMNH 26076 Dorsolateraal strepen heldergeel, tekening op dijen vuurrood, veel feller als bij P. femoralis.

Gonyocephalus auritus Meyer, 3 ex. (1 juv.), Misool.Hoedt 1867.

RMNH 17656 Eleutherodactylus zeuctotylus 1 [vrouw] Lelygebergte, 4 km N.O. van airstrip, distr. Marowijne, Suriname, 19-VIII-1975, onder stuk hout, 610m, l [plus] d M. S. Hoogmoed.

Entity detection in fieldbooksEntity detection in fieldbooks

13

→ Number, Genus

1 ex. Leptodactylus wagneri At base of tree on small island, primary forest, 20.45-22.00 u. RMNH 23865

Lithodytes lineatus, Brownsberg, aan voet, onder stuk rot hout, 13.07.1968, 8.45 u., RMNH 26076 Dorsolateraal strepen heldergeel, tekening op dijen vuurrood, veel feller als bij P. femoralis.

Gonyocephalus auritus Meyer, 3 ex. (1 juv.), Misool.Hoedt 1867.

RMNH 17656 Eleutherodactylus zeuctotylus 1 [vrouw] Lelygebergte, 4 km N.O. van airstrip, distr. Marowijne, Suriname, 19-VIII-1975, onder stuk hout, 610m, l [plus] d M. S. Hoogmoed.

Entity detection in fieldbooksEntity detection in fieldbooks

14

→ Number, Genus, Species

1 ex. Leptodactylus wagneri At base of tree on small island, primary forest, 20.45-22.00 u. RMNH 23865

Lithodytes lineatus, Brownsberg, aan voet, onder stuk rot hout, 13.07.1968, 8.45 u., RMNH 26076 Dorsolateraal strepen heldergeel, tekening op dijen vuurrood, veel feller als bij P. femoralis.

Gonyocephalus auritus Meyer, 3 ex. (1 juv.), Misool.Hoedt 1867.

RMNH 17656 Eleutherodactylus zeuctotylus 1 [vrouw] Lelygebergte, 4 km N.O. van airstrip, distr. Marowijne, Suriname, 19-VIII-1975, onder stuk hout, 610m, l [plus] d M. S. Hoogmoed.

Entity detection in fieldbooksEntity detection in fieldbooks

15

→ Number, Genus, Species, Biotope

1 ex. Leptodactylus wagneri At base of tree on small island, primary forest, 20.45-22.00 u. RMNH 23865

Lithodytes lineatus, Brownsberg, aan voet, onder stuk rot hout, 13.07.1968, 8.45 u., RMNH 26076 Dorsolateraal strepen heldergeel, tekening op dijen vuurrood, veel feller als bij P. femoralis.

Gonyocephalus auritus Meyer, 3 ex. (1 juv.), Misool.Hoedt 1867.

RMNH 17656 Eleutherodactylus zeuctotylus 1 [vrouw] Lelygebergte, 4 km N.O. van airstrip, distr. Marowijne, Suriname, 19-VIII-1975, onder stuk hout, 610m, l [plus] d M. S. Hoogmoed.

Entity detection in fieldbooksEntity detection in fieldbooks

16

→ Number, Genus, Species, Biotope, Collection Time

1 ex. Leptodactylus wagneri At base of tree on small island, primary forest, 20.45-22.00 u. RMNH 23865

Lithodytes lineatus, Brownsberg, aan voet, onder stuk rot hout, 13.07.1968, 8.45 u., RMNH 26076 Dorsolateraal strepen heldergeel, tekening op dijen vuurrood, veel feller als bij P. femoralis.

Gonyocephalus auritus Meyer, 3 ex. (1 juv.), Misool.Hoedt 1867.

RMNH 17656 Eleutherodactylus zeuctotylus 1 [vrouw] Lelygebergte, 4 km N.O. van airstrip, distr. Marowijne, Suriname, 19-VIII-1975, onder stuk hout, 610m, l [plus] d M. S. Hoogmoed.

Entity detection in fieldbooksEntity detection in fieldbooks

Entity detection in fieldbooksEntity detection in fieldbooks

• Training on labeled examples– Easy: short, regular entities– Hard: longer textual descriptions

• Metadata detection in description entities– Types of forest, soil, … in biotopes– Physical appearance, … in special

comments

• By automatically learning the “grammar” of these entities (ABL)

Expert searchExpert search

• Toine Bogers, A Propos project• Two types

– Expert finding– Expert profiling

• Evidence of expertise– Content-based evidence– Evidence from social networks– Activity-based evidence

• Current results on academic workgroup– Content-based not better than citation-base– Number of citations just as good as PageRank– “authorship = expertise”? not 100%

• news article recommender for Trouw– recommend related stories for article posted online– editors provide feedback on recommendations– approved recommendations are automatically placed online

Trouw RecommenderTrouw Recommender

Other ILK Text ToolsOther ILK Text Tools

• Translation– Memory-based, any pair of languages

• Morpho-syntactic analysis: Tadpole– Part-of-speech tagging, lemmatization– Dependency parsing, 20 languages

• Text-to-speech conversion– Dutch speech synthesizer: NeXTeNS

• Word sense disambiguation, co-reference resolution, paraphrasing, named entity recognition.

Thank youThank you

http://ilk.uvt.nl

Toine Bogers, Martin Reynaert, Piroska Lendvai, Marieke van Erp, Steve Hunt, Peter Berck, Ko van der Sloot, Herman Stehouwer, Menno van Zaanen, Tanja Gaustad, Sebastiaan Tesink, Erwin Marsi, Iris Hendrickx, Antal van den Bosch, Walter Daelemans