GENERAL ENQUIRIES: Tel: + 27 12 841 2911 | Email: callcentre@csir.co.za

Show simple item record

dc.contributor.author Cooper, Antony K
dc.contributor.author Kourie, DG
dc.contributor.author Coetzee, S
dc.date.accessioned 2010-11-05T08:28:08Z
dc.date.available 2010-11-05T08:28:08Z
dc.date.issued 2010-10
dc.identifier.citation Cooper, AK, Kourie, DG and Coetzee, S. 2010. Thoughts on exploiting instability in lattices for assessing the discrimination adequacy of a taxonomy. Concept Lattices and Their Applications (CLA 2010), Seville, Spain, 19-21 October 2010, pp 12 en
dc.identifier.isbn 978-84614-4027-6
dc.identifier.uri http://hdl.handle.net/10204/4525
dc.description Concept Lattices and Their Applications (CLA 2010), Seville, Spain, 19-21 October 2010 en
dc.description.abstract Conventionally in formal concept analysis (FCA), concept stability is preferred in the lattice, because instability (i.e. low stability) represents noise that clouds the analysis of the data. However, high concept stability means that there are many objects with the same intent and many attributes with the same extent, which could be interpreted as a high level of redundancy in the lattice. We report here on work that we have done using FCA to analyse different taxonomies for user-generated content. Here, redundancy amongst the attributes in the lattice is not desirable, because it represents classes in the taxonomy that are unable to differentiate adequately the objects being classified from one another. Low extensional stability (i.e. noisy attributes) reveals attributes that are unique to the associated set of objects — if the attributes are interesting, they could imply there are “missing” objects. Redundancy amongst the objects can have a number of implications. Hence, instability in a lattice is desirable for some types of analysis. en
dc.language.iso en en
dc.relation.ispartofseries Conference Paper en
dc.subject Formal concept analysis en
dc.subject Discrimination adequacy en
dc.subject Taxonomy en
dc.subject Lattices en
dc.title Thoughts on exploiting instability in lattices for assessing the discrimination adequacy of a taxonomy en
dc.type Presentation en


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search ResearchSpace


Advanced Search

Browse

My Account