Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke

Julie A. Dickerson; Reuben Matalon; Cathy Helgason

doi:10.1109/NAFIPS.1998.715571

Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke

Julie A. Dickerson, Reuben Matalon, Cathy Helgason

Pediatrics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

Abstract

Vitamin, metabolite, and homocysteine levels were measured in 166 patients with a history of ischemic stroke. An interactive relationship between vitamin, metabolite, and homocysteine levels was sought. The data analysis used the fuzzy c-means algorithm and fuzzy conditional clustering. The number of clusters in each case was determined by the Xie-Beni Index. In conditional fuzzy clustering, the data was clustered based on the membership value of one of the sets. Different combinations of vitamins, homocysteine, and cysthionine levels were tested. While many patients had low levels of vitamins or high homocysteine, these did not correlate in all instances. Normal vitamin levels were associated with normal homocysteine levels. Homocysteine levels did not appear to depend on vitamin levels alone. Other factors such as vitamin receptor abnormalities may dictate individual needs and ultimately play a role in the interaction between vitamin levels and homocysteine.

Original language	English (US)
Title of host publication	1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998
Editors	Lawrence O. Hall, Jim Bezdek
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	231-236
Number of pages	6
ISBN (Electronic)	0780344537
DOIs	https://doi.org/10.1109/NAFIPS.1998.715571
State	Published - Jan 1 1998
Event	1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998 - Pensacola Beach, United States Duration: Aug 20 1998 → Aug 21 1998

Publication series

Name	Annual Conference of the North American Fuzzy Information Processing Society - NAFIPS

Other

Other	1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998
Country	United States
City	Pensacola Beach
Period	8/20/98 → 8/21/98

ASJC Scopus subject areas

Computer Science(all)
Mathematics(all)

Access to Document

10.1109/NAFIPS.1998.715571

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Dickerson, J. A., Matalon, R., & Helgason, C. (1998). Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke. In L. O. Hall, & J. Bezdek (Eds.), 1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998 (pp. 231-236). (Annual Conference of the North American Fuzzy Information Processing Society - NAFIPS). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NAFIPS.1998.715571

Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke. / Dickerson, Julie A.; Matalon, Reuben; Helgason, Cathy.

1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998. ed. / Lawrence O. Hall; Jim Bezdek. Institute of Electrical and Electronics Engineers Inc., 1998. p. 231-236 (Annual Conference of the North American Fuzzy Information Processing Society - NAFIPS).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Dickerson, JA, Matalon, R & Helgason, C 1998, Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke. in LO Hall & J Bezdek (eds), 1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998. Annual Conference of the North American Fuzzy Information Processing Society - NAFIPS, Institute of Electrical and Electronics Engineers Inc., pp. 231-236, 1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998, Pensacola Beach, United States, 8/20/98. https://doi.org/10.1109/NAFIPS.1998.715571

Dickerson JA, Matalon R, Helgason C. Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke. In Hall LO, Bezdek J, editors, 1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998. Institute of Electrical and Electronics Engineers Inc. 1998. p. 231-236. (Annual Conference of the North American Fuzzy Information Processing Society - NAFIPS). https://doi.org/10.1109/NAFIPS.1998.715571

Dickerson, Julie A. ; Matalon, Reuben ; Helgason, Cathy. / Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke. 1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998. editor / Lawrence O. Hall ; Jim Bezdek. Institute of Electrical and Electronics Engineers Inc., 1998. pp. 231-236 (Annual Conference of the North American Fuzzy Information Processing Society - NAFIPS).

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abstract = "Vitamin, metabolite, and homocysteine levels were measured in 166 patients with a history of ischemic stroke. An interactive relationship between vitamin, metabolite, and homocysteine levels was sought. The data analysis used the fuzzy c-means algorithm and fuzzy conditional clustering. The number of clusters in each case was determined by the Xie-Beni Index. In conditional fuzzy clustering, the data was clustered based on the membership value of one of the sets. Different combinations of vitamins, homocysteine, and cysthionine levels were tested. While many patients had low levels of vitamins or high homocysteine, these did not correlate in all instances. Normal vitamin levels were associated with normal homocysteine levels. Homocysteine levels did not appear to depend on vitamin levels alone. Other factors such as vitamin receptor abnormalities may dictate individual needs and ultimately play a role in the interaction between vitamin levels and homocysteine.",

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