TY - GEN
T1 - Fuzzy clustering of vitamin and homocysteine levels in patients with history of ischemic stroke
AU - Dickerson, Julie A.
AU - Matalon, Reuben
AU - Helgason, Cathy
PY - 1998/1/1
Y1 - 1998/1/1
N2 - 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.
AB - 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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U2 - 10.1109/NAFIPS.1998.715571
DO - 10.1109/NAFIPS.1998.715571
M3 - Conference contribution
AN - SCOPUS:84886579443
T3 - Annual Conference of the North American Fuzzy Information Processing Society - NAFIPS
SP - 231
EP - 236
BT - 1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998
A2 - Hall, Lawrence O.
A2 - Bezdek, Jim
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1998 Conference of the North American Fuzzy Information Processing Society, NAFIPS 1998
Y2 - 20 August 1998 through 21 August 1998
ER -