The negative correlation in W~+ W~- hadronic decay, which has recently been proposed as a possible signal for the colour reconnection in these proceses, is studied in some detail by using the random cascadingα-model.

Exploding number of frequent itemsets in the mining of negative association rules;

A algorithm for discovering positive&negative association rules based on correlation coefficient;

Positive and negative association rules mining based on minimum update rate;

Especially when the negative association rules are studied,infrequent itemsets become more and more important because they contain a lot of important negative association rules.

According to the value of interest measure,association rules are classified into positive and negative association rules.

Dialectical contemplation of relationship between success and failure and utilization of strategies in modern football matches;