1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | <?php $heuristics["HISTORY_LOW_TRANSACTIONS_AGENCY"] = Array( "description" => "unusual for agency due to previous low number of transactions " ); function HISTORY_LOW_TRANSACTIONS_AGENCY($cn) { $thisAgencyTransactions = getAgencyTransactions($cn['agencyName']); $averageAgencyTransactions = getAverageAgencyTransactions(); $stddevAgencyTransactions = getstddevAgencyTransactions(); $diff = strtotime($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 ); } $agencyTransactions = Array(); function getAgencyTransactions($agencyName) { global $agencyTransactions,$conn; if (!$agencyTransactions[$agencyName]) { $query = 'select count(*) from contractnotice where "agencyName" = \'' . pg_escape_string ($agencyName) . '"\''; $result = $conn->query($query); //echo $query; $r = $result->fetch(PDO::FETCH_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, $stddevAgencyTransactions,$conn; $query = 'select avg(count), STDDEV(count) from (select count(*) as count from contractnotice group by "agencyName") as a;'; $result = $conn->query($query); $r = $result->fetch(PDO::FETCH_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 $supplierTransactions,$conn; if ($supplierABN != 0 && $supplierABN != "") { if (!$supplierTransactions[$supplierABN]) { $query = "select count(*) from contractnotice where \"supplierABN\" = '" . $supplierABN . "'"; $result = $conn->query($query); $r = $result->fetch(PDO::FETCH_BOTH); $supplierTransactions[$supplierABN] = $r[0]; } return $supplierTransactions[$supplierABN]; } if (!$supplierTransactions[$supplierName]) { $query = "select count(*) from contractnotice where \"supplierName\" = '" . $supplierName . "'"; $result = $conn->query($query); $r = $result->fetch(PDO::FETCH_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, $stddevSupplierTransactions,$conn; $query = 'select avg(count), stddev(count) from ( select (case when "supplierABN" != 0 THEN "supplierABN"::text ELSE "supplierName" END) as "supplierID", count(*) as count from contractnotice group by "supplierID") as a;'; $result = $conn->query($query); $r = $result->fetch(PDO::FETCH_BOTH); $averageSupplierTransactions = $r[0]; $stddevSupplierTransactions = $r[1]; } |