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The imbalance of dataset will directly affect the precision of classifier. PC4.5, an improved C4.5 algorithm is proposed. The experiments in MIT dataset indicate that PC4.5 is effective on imbalanced dataset and the scale of the decision tree could be reduced.
OBJECTIVE To observe the length heteroplasmy and point heteroplasmy in human mtDNA control region. METHODS The peripheral blood, buccal cell, and single hair shaft from 50 individuals and 16 family members, related in their maternallineage were analyzed by direct sequencing, and clones from 20 individuals whose mtDNA sequences have a T-C transition at… (More)
AIM To establish a new chemiluminescent assay with high sensitivity for detecting E. coli O157:H7 in food. METHODS The assay was established based on the alkaline phosphatase (ALP) labeled anti-E. coli O157:H7 antibody, which reacted with an excellent chemiluminescent reagent, 3(2' spiroadamantane)4 methoxy 4(3''phosphoryloxy) phenyl 1,2 dioxetane (AMPPD)… (More)