@ 2014-09-05T09:47:59Z <?php
function similarity($w1,$w2) {
//return cosine similarity of w1 and w2 using formula in the
//definition here: http://en.wikipedia.org/wiki/Cosine_similarity
//get numerator:
$numerator = 0;
for($i = 0, $l = count($w1); $i < $l; $i++) $numerator += $w1[$i]*$w2[$i];
//get abs(w1) and abs(w2)
$abs_w1 = 0; $abs_w2 = 0;
for($i = 0, $l = count($w1); $i < $l; $i++) {
$abs_w1 += $w1*$w1;
$abs_w2 += $w2*$w2;
}
$abs_w1 = sqrt($abs_w1);
$abs_w2 = sqrt($abs_w2);
//make denominator:
$denominator = $abs_w1*$abs_w2;
return $numerator/$denominator;
}
similarity([1,2,3,4,5,6,7,8,9],[1,2,3,4,5,6,7,8,88]);
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Output for 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 Fatal error: Uncaught TypeError: Unsupported operand types: array * array in /in/OXaW3:13
Stack trace:
#0 /in/OXaW3(25): similarity(Array, Array)
#1 {main}
thrown in /in/OXaW3 on line 13
Process exited with code 255 . Output for 7.0.0 - 7.0.31 , 7.1.0 - 7.1.23 , 7.2.0 - 7.2.33 , 7.3.16 - 7.3.33 , 7.4.0 - 7.4.33 Fatal error: Uncaught Error: Unsupported operand types in /in/OXaW3:13
Stack trace:
#0 /in/OXaW3(25): similarity(Array, Array)
#1 {main}
thrown in /in/OXaW3 on line 13
Process exited with code 255 . Output for 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.38 Fatal error: Unsupported operand types in /in/OXaW3 on line 13
Process exited with code 255 . Output for 4.4.2 - 4.4.9 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 Parse error: syntax error, unexpected '[', expecting ')' in /in/OXaW3 on line 25
Process exited with code 255 . Output for 4.3.0 - 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 , 5.0.0 - 5.0.5 Parse error: parse error, unexpected '[', expecting ')' in /in/OXaW3 on line 25
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error, expecting `')'' in /in/OXaW3 on line 25
Process exited with code 255 . preferences:dark mode live preview
299.07 ms | 401 KiB | 415 Q