DocumentCode :
2631026
Title :
Selecting fuzzy connectives to represent heavy metal distribution in Liverpool Bay
Author :
Al-Zaidan, Ameena S. ; Kuncheva, Ludmila I.
Author_Institution :
Sch. of Inf., Wales Univ., Bangor, UK
Volume :
2
fYear :
2000
fDate :
2000
Firstpage :
602
Abstract :
It is known that metals and their combinations can be toxic to certain species in the aquatic environment. Heavy metal concentrations are measured annually in Liverpool Bay, UK. Each metal concentration is associated with a fuzzy set called “contaminated”, defined over the set of sites where the measurements have been taken. Fuzzy aggregating operators are used to construct a set of loading indices accounting for the overall contamination of Liverpool Bay. We design and compare 10 loading indices, two of which are based on a fuzzy integral. To select a useful subset of loading indices, we calculate the similarities between them and run a relational data clustering. The final set of indices is found by nominating one representative from each cluster. The fuzzy aggregation operations chosen for the final set of loading indices are: minimum, product, maximum and arithmetic mean
Keywords :
environmental science computing; fuzzy set theory; metals; water pollution measurement; Liverpool Bay; aquatic environment; arithmetic mean; contaminated fuzzy set; environmental modelling; fuzzy aggregating operators; fuzzy aggregation operations; fuzzy connectives selection; fuzzy integral; fuzzy measures; heavy metal concentration measurement; heavy metal distribution; loading indices; maximum; minimum; product; relational data clustering; similarity measures; spatial distribution; toxicity; weighted average; Atmospheric measurements; Chromium; Contamination; Copper; Fuzzy sets; Metals industry; Monitoring; Pollution measurement; Principal component analysis; Sediments;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Knowledge-Based Intelligent Engineering Systems and Allied Technologies, 2000. Proceedings. Fourth International Conference on
Conference_Location :
Brighton
Print_ISBN :
0-7803-6400-7
Type :
conf
DOI :
10.1109/KES.2000.884120
Filename :
884120
Link To Document :
بازگشت