Artikel in Tagungsband INPROC-2019-08

Bibliograph.
Daten
Kiefer, Cornelia; Reimann, Peter; Mitschang, Bernhard: A Hybrid Information Extraction Approach Exploiting Structured Data Within a Text Mining Process.
In: Grust, Torsten (Hrsg); Naumann, Felix (Hrsg); Böhm, Alexander (Hrsg); Lehner, Wolfgang (Hrsg); Härder, Theo (Hrsg); Rahm, Erhard et al. (Hrsg): 18. Fachtagung des GI-Fachbereichs ,,Datenbanken und Informationssysteme (DBIS), 4.-8. März 2019, Rostock, Germany, Proceedings..
Universität Stuttgart, Fakultät Informatik, Elektrotechnik und Informationstechnik.
S. 149-168, englisch.
Bonn: Gesellschaft f\"{u}r Informatik e.V. (GI), 4. März 2019.
Artikel in Tagungsband (Konferenz-Beitrag).
KörperschaftDatenbanksysteme für Business, Technologie und Web (BTW 2019)
CR-Klassif.I.2.7 (Natural Language Processing)
Keywordsinformation extraction; clustering; text mining; free text fields
Kurzfassung

Many data sets encompass structured data fields with embedded free text fields. The text fields allow customers and workers to input information which cannot be encoded in structured fields. Several approaches use structured and unstructured data in isolated analyses. The result of isolated mining of structured data fields misses crucial information encoded in free text. The result of isolated text mining often mainly repeats information already available from structured data. The actual information gain of isolated text mining is thus limited. The main drawback of both isolated approaches is that they may miss crucial information. The hybrid information extraction approach suggested in this paper adresses this issue. Instead of extracting information that in large parts was already available beforehand, it extracts new, valuable information from free texts. Our solution exploits results of analyzing structured data within the text mining process, i.e., structured information guides and improves the information extraction process on textual data. Our main contributions comprise the description of the concept of hybrid information extraction as well as a prototypical implementation and an evaluation with two real-world data sets from aftersales and production with English and German free text fields.

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Abteilung(en)Universität Stuttgart, Institut für Parallele und Verteilte Systeme, Anwendersoftware
Projekt(e)GSaME-NFG
Eingabedatum7. Mai 2019
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