12 lines
345 B
Factor
12 lines
345 B
Factor
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! Copyright (C) 2012 Doug Coleman.
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! See http://factorcode.org/license.txt for BSD license.
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USING: arrays kernel math.statistics math.vectors sequences
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sequences.extras ;
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IN: machine-learning.one-hot
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: one-hot ( indices features -- array )
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[ 1 ] 2dip
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[ length ] map
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[ cum-sum0 v+ ]
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[ nip sum 0 <array> ] 2bi [ set-nths ] keep ;
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