Open Access
Wissen gewinnen durch Wissen : Ontologiebasierte Informationsextraktion
Brigitte Endres-Niggemeyer,Sigrid Jauris-Heipke,Manuela Pinsky,Ulrike Ulbricht +3 more
- Vol. 57, pp 301-308
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TLDR
The SummIt-BMT system as discussed by the authors uses ontologies for information extraction and question answering in the context of Bone Marrow Transplantation (BMT) in a MySQL database.Abstract:
This article reports on ontology use for an automatic summarization that "goes the human way". The idea behind it is that human summary users can comprehend and integrate automatic summaries more easily if they and the automatic summarizer share summarization principles and practices. Our currentfirst real-world application is in bone marrow transplantation (BMT). In the core of the SummIt-BMT system, a domain ontology in a MySQL database provides knowledge for human users and system components. SummIt-BMT supports query formulation through an empirically founded scenario interface. Incoming retrieval results are pre-selected by a text retrieval component and submitted to agents reflecting summarization strategies of competent humans. The agents choose from the text passage retrieval result the sentences that best fit the user question as evidenced by ontology propositions occurring in them. The relevant text clips are entered into the answer version of the question scenario and presented with links to their home positions in the source documents. Summarization and information extraction is ontology-based. It uses the relatively well-defined concepts for objects and properties and finds evidence for relations between them with the help of paraphrases. Discussion concentrates on the ontology and its use for information extraction and question answering / summarization. The system agents are heavy users of the ontology. They typically fetch and combine different types of knowledge from the ontology database: concepts, propositions and their semanto-syntactic schemes, unifiers, paraphrases and query scenario forms. The main achievement of the agents is to keep only text retrieval results that meet user question propositions not only by individual concepts, but also by related units corresponding to phrases or sentences. Our first results are presented in the final section of the paper. They are not yet excellent, but quite good for a start-up team of agents and an ontology that is open for improvement.read more
Citations
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Book ChapterDOI
Developing Case-Based Reasoning Applications Using myCBR 3
TL;DR: Novel features of myCBR are introduced that support knowledge engineers developing more comprehensive applications making use of existing knowledge such as Linked Data or User Generated Content.
Book ChapterDOI
iDocument: using ontologies for extracting and annotating information from unstructured text
TL;DR: This work outlines iDocument's ontology-based architecture, the use of SPARQL queries as extraction templates and an evaluation of iDocument in an automatic document annotation scenario.
Scaling up Pattern Induction for Web Relation Extraction through Frequent Itemset Mining
Sebastian Blohm,Philipp Cimiano +1 more
TL;DR: A bootstrapping approach to relation extraction which starts with a few seed tuples of the target relation and induces patterns which can be used to extract further tuples, which reduces the pattern induction complexity from quadratic to linear while mantaining extraction quality at similar (or even marginally better) levels.
References
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Journal ArticleDOI
Strategies of Discourse Comprehension
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Strategies of discourse comprehension
Teun A. van Dijk,Walter Kintsch +1 more
TL;DR: In this article, the authors define a set of rhetorical schemata to be discussed in what follows, and describe them as descriptions, not definitions, and the bus schema contains information that is neither nor-
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Comprehension: A Paradigm for Cognition
TL;DR: This work proposes a new model of comprehension processes: the construction-integration model, which combines the role of working memory, Cognition and representation, and Propositional representations.
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The role of knowledge in discourse comprehension : a construction-integration model
TL;DR: This chapter discusses data concerning the time course of word identification in a discourse context and a simulation of arithmetic word-problem understanding provides a plausible account for some well-known phenomena.