We investigate the computational properties of the spatial algebra RCC-5 which is a restricted version of the RCC framework for spatial reasoning. The satisfiability problem for RCC-5 is known to be NP-complete but not much is known about its approximatel
this paper presents the process of acquiring a large, domain independent, taxonomy from the German Wikipedia. We build upon a
previously implemented platform that extracts a semantic network and taxonomy from the English version of theWikipedia. We describe
two accomplishments of our work: the semantic network for the German language in which isa links are identied and annotated, and
an expansion of the platform for easy adaptation for a new language. We identify the platform's strengths and shortcomings, which stem
from the scarcity of free processing resources for languages other than English. We show that the taxonomy induction process is highly
reliable evaluated against the German version of WordNet, GermaNet, the resource obtained shows an accuracy of 83.34%.
An ontology is a computer-processable collection of knowledge about the world.
This thesis explains how an ontology can be constructed and expanded auto-
matically. The proposed approach consists of three contributions:
1. A core ontology, YAGO.
YAGO is an ontology that has been constructed automatically. It com-
bines high accuracy with large coverage and serves as a core that can be
expanded.
2. A tool for information extraction, LEILA.
LEILA is a system that can extract knowledge from natural language
texts. LEILA will be used to ¯nd new facts for YAGO.
3. An integration mechanism, SOFIE.
SOFIE is a system that can reason on the plausibility of new knowl-
edge. SOFIE will assess the facts found by LEILA and integrate them
into YAGO.
Each of these components comes with a fully implemented system. Together,
they form an integrative architecture, which does not only gather new facts,
but also reconcile them with the existing facts. The result is an ever-growing,
yet highly accurate ontological knowledge base. A survey of applications of the
ontology completes the thesis.
This revision of Bloom's taxonomy is designed to help teachers understand and implement standards-based curriculums. Cognitive psychologists, curriculum specialists, teacher educators, and researchers have developed a two-dimensional framework, focusing o
Digitized journals and books in biodiversity spanning 200 years from the collections of ten major natural history museum libraries, botanical libraries, and research institutions.
L. Nigay, and J. Coutaz. Proceedings of the INTERACT '93 and CHI '93 Conference on Human Factors in Computing Systems, page 172--178. New York, NY, USA, ACM, (1993)