Shujie Yang  , Xiaofang You  , Feng Chen  , Shichao Zhang  , 
    Stock-management-based Expectation Pattern Discovery,
    Asian Journal of Information Technology,
    Volume 4,Issue 11,
    2005,
    Pages 1086-1092,
    ISSN 1682-3915,
    ajit.2005.1086.1092,
    (https://makhillpublications.co/view-article.php?doi=ajit.2005.1086.1092)
    Abstract: We design a new yet efficient strategy for identifying against-expectation patterns in databases. An against-expectation pattern is either an itemset that its support is out of a certain neighbor of its expected value, referred to an against-expectation itemset or an association rule generating by an against-expectation itemset, referred to an against-expectation rule. The techniques for mining against-expectation patterns are previously undeveloped. Present algorithm for identifying against-expectation patterns is based on the nearest- neighbor graph and correlation analysis techniques. We experimentally evaluate our algorithms and demonstrate that our approach is efficient and promising.
    Keywords: Exception;against-expectation pattern;nearest-neighbor graph;correlation analysis