Sorensen–Dice coefficient: Difference between revisions

Sorensen–Dice coefficient (view source)

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Line 26: SDC = 2 × \|A∩B\| / (\|A\| + \|B\|) ~~it being understood that~~where A, B and A∩B are to be understood as multisets, and that if an item, x, has multiplicity a in A and b in B, then it will have multiplicity min(a,b) in A∩B. The Sørensen–Dice coefficient is thus a ratio between 0.0 and 1.0 giving the "percent similarity" between the two populations. Line 327: \| .[1] as $j \| if $i == ($A\|length) or $j == ($B\|length) then empty elif $A[$i] == $B[$j] then ~~$A[$i]~~1, ([$i+1, $j+1] \| pop) elif $A[$i] < $B[$j] then [$i+1, $j] \| pop else [$i, $j+1] \| pop Line 337: # Emit a stream of the bigrams of the input string blindly def bg: . as $in \| range(0;length-1 ) \| $in[.:.+2]; ascii_downcase \| [splits(" ") \| bg]; ~~\| reduce splits(" ") as $word ([];~~ ~~. + [$word \| bg]);~~