| <?php | <?php |
| // "unusual for agency/supplier due to previous low number of transactions " | $heuristics["HISTORY_LOW_TRANSACTIONS_AGENCY"] = Array( |
| $heuristics["HISTORY_LOW_TRANSACTIONS"] = Array( | "description" => "unusual for agency due to previous low number of transactions " |
| "description" => "unusual for agency/supplier due to previous low number of transactions " | |
| ); | ); |
| function HISTORY_LOW_TRANSACTIONS($cn) | function HISTORY_LOW_TRANSACTIONS_AGENCY($cn) |
| { | { |
| $averageContractPeriod = getAverageContractPeriod(); | $thisAgencyTransactions = getAgencyTransactions($cn['agencyName']); |
| $diff = strtotime($cn['contractStart']) - strtotime($cn['publishDate']); | $averageAgencyTransactions = getAverageAgencyTransactions(); |
| $days = intval($diff / 24); | $stddevAgencyTransactions = getstddevAgencyTransactions(); |
| return ($days > 45 ? 1 : 0); | $diff = strtotime($cn['contractEnd']) - strtotime($cn['contractStart']); |
| $days = intval($diff / (60 * 60 * 24)); | |
| $value = abs($days - $averageAgencyTransactions) / $stddevAgencyTransactions; | |
| return Array( | |
| "heuristic_value" => $value, | |
| "raw_value" => $days, | |
| "mean" => $averageAgencyTransactions, | |
| "stddev" => $stddevAgencyTransactions | |
| ); | |
| } | } |
| /* - unusual value for time of year | $agencyTransactions = Array(); |
| - compare to all other records in last 2 weeks | function getAgencyTransactions($agencyName) |
| - ie. many large contracts in june so takes more to standout*/ | |
| $heuristics["HISTORY_HIGH_VALUE_FOR_MONTH"] = Array( | |
| "description" => "unusual value for time of year"); | |
| function HISTORY_HIGH_VALUE_FOR_MONTH($cn) | |
| { | { |
| $averageContractPeriod = getAverageContractPeriod(); | global $agencyTransactions; |
| $diff = strtotime($cn['contractStart']) - strtotime($cn['publishDate']); | if (!$agencyTransactions[$agencyName]) { |
| $days = intval($diff / 24); | $query = 'select count(*) from contractnotice where agencyName = "' . $agencyName . '"'; |
| return ($days > 45 ? 1 : 0); | $result = mysql_query($query); |
| $r = mysql_fetch_array($result, MYSQL_BOTH); | |
| $agencyTransactions[$agencyName] = $r[0]; | |
| } | |
| return $agencyTransactions[$agencyName]; | |
| } | } |
| $averageAgencyTransactions; | |
| function getAverageAgencyTransactions() | |
| { | |
| global $averageAgencyTransactions; | |
| if (!$averageAgencyTransactions) { | |
| getStatsAgencyTransactions(); | |
| } | |
| return $averageAgencyTransactions; | |
| } | |
| $stddevAgencyTransactions; | |
| function getstddevAgencyTransactions() | |
| { | |
| global $stddevAgencyTransactions; | |
| if (!$stddevAgencyTransactions) { | |
| getStatsAgencyTransactions(); | |
| } | |
| return $stddevAgencyTransactions; | |
| } | |
| function getStatsAgencyTransactions() | |
| { | |
| global $averageAgencyTransactions, $stddevAgencyTransactions; | |
| $query = "select avg(count), STDDEV(count) from (select count(*) as count | |
| from contractnotice group by agencyName) as a;"; | |
| $result = mysql_query($query); | |
| $r = mysql_fetch_array($result, MYSQL_BOTH); | |
| $averageAgencyTransactions = $r[0]; | |
| $stddevAgencyTransactions = $r[1]; | |
| } | |
| $heuristics["HISTORY_LOW_TRANSACTIONS_SUPPLIER"] = Array( | |
| "description" => "unusual for supplier due to previous low number of transactions " | |
| ); | |
| function HISTORY_LOW_TRANSACTIONS_SUPPLIER($cn) | |
| { | |
| $thisSupplierTransactions = getSupplierTransactions($cn['supplierName'], $cn['supplierABN']); | |
| $averageSupplierTransactions = getAverageSupplierTransactions(); | |
| $stddevSupplierTransactions = getstddevSupplierTransactions(); | |
| $diff = strtotime($cn['contractEnd']) - strtotime($cn['contractStart']); | |
| $days = intval($diff / (60 * 60 * 24)); | |
| $value = abs($days - $averageSupplierTransactions) / $stddevSupplierTransactions; | |
| return Array( | |
| "heuristic_value" => $value, | |
| "raw_value" => $days, | |
| "mean" => $averageSupplierTransactions, | |
| "stddev" => $stddevSupplierTransactions | |
| ); | |
| } | |
| $supplierTransactions = Array(); | |
| function getSupplierTransactions($supplierName, $supplierABN) | |
| { | |
| global $supplierTransactions; | |
| if ($supplierABN != 0 && $supplierABN != "") { | |
| if (!$supplierTransactions[$supplierABN]) { | |
| $query = 'select count(*) from contractnotice where supplierABN = "' . $supplierABN . '"'; | |
| $result = mysql_query($query); | |
| $r = mysql_fetch_array($result, MYSQL_BOTH); | |
| $supplierTransactions[$supplierABN] = $r[0]; | |
| } | |
| return $supplierTransactions[$supplierABN]; | |
| } | |
| if (!$supplierTransactions[$supplierName]) { | |
| $query = 'select count(*) from contractnotice where supplierName = "' . $supplierName . '"'; | |
| $result = mysql_query($query); | |
| $r = mysql_fetch_array($result, MYSQL_BOTH); | |
| $supplierTransactions[$supplierName] = $r[0]; | |
| } | |
| return $supplierTransactions[$supplierName]; | |
| } | |
| $averageSupplierTransactions; | |
| function getAverageSupplierTransactions() | |
| { | |
| global $averageSupplierTransactions; | |
| if (!$averageSupplierTransactions) { | |
| getStatsSupplierTransactions(); | |
| } | |
| return $averageSupplierTransactions; | |
| } | |
| $stddevSupplierTransactions; | |
| function getstddevSupplierTransactions() | |
| { | |
| global $stddevSupplierTransactions; | |
| if (!$stddevSupplierTransactions) { | |
| getStatsSupplierTransactions(); | |
| } | |
| return $stddevSupplierTransactions; | |
| } | |
| function getStatsSupplierTransactions() | |
| { | |
| global $averageSupplierTransactions, $stddevSupplierTransactions; | |
| $query = 'select avg(count), stddev(count) from (select IF(supplierABN != "",supplierABN,supplierName) as supplierID, count(*) as count from contractnotice group by supplierID) as a;'; | |
| $result = mysql_query($query); | |
| $r = mysql_fetch_array($result, MYSQL_BOTH); | |
| $averageSupplierTransactions = $r[0]; | |
| $stddevSupplierTransactions = $r[1]; | |
| } | |