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- large contract value
- chi-square test for outliers / standard dev from mean/median
- percent of total contracts for supplier/agency
$heuristics["METADATA_DUPLICATED_DESCRIPTION"] = Array(
"description" => "unusual value for time of year");
function METADATA_DUPLICATED_DESCRIPTION($cn)
{
$averageContractPeriod = getAverageContractPeriod();
$diff = strtotime($cn['contractStart']) - strtotime($cn['publishDate']);
$days = intval($diff / 24);
return ($days > 45 ? 1 : 0);
}
- peculiar value
- Just under 80k, amplified if other contracts with same supplier are just under
- unusual variation amount
- absolute value; large reductions as well as large increases
$heuristics["METADATA_DUPLICATED_DESCRIPTION"] = Array(
"description" => "unusual value for time of year");
function METADATA_DUPLICATED_DESCRIPTION($cn)
{
$averageContractPeriod = getAverageContractPeriod();
$diff = strtotime($cn['contractStart']) - strtotime($cn['publishDate']);
$days = intval($diff / 24);
return ($days > 45 ? 1 : 0);
} |