Reword a confusing comment
Bug: 7005645 Change-Id: Ifd942b3ce242aeeec512e132e1cee31329e994b1main
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e2ac3932e3
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aa27635a8a
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@ -783,10 +783,10 @@ public class BinaryDictInputOutput {
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// their lower bound and exclude their higher bound so we need to have the first step
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// start at exactly 1 unit higher than floor(unigramFreq + half a step).
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// Note : to reconstruct the score, the dictionary reader will need to divide
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// MAX_TERMINAL_FREQUENCY - unigramFreq by 16.5 likewise, and add
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// (discretizedFrequency + 0.5) times this value to get the median value of the step,
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// which is the best approximation. This is how we get the most precise result with
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// only four bits.
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// MAX_TERMINAL_FREQUENCY - unigramFreq by 16.5 likewise to get the value of the step,
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// and add (discretizedFrequency + 0.5 + 0.5) times this value to get the best
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// approximation. (0.5 to get the first step start, and 0.5 to get the middle of the
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// step pointed by the discretized frequency.
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final float stepSize =
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(MAX_TERMINAL_FREQUENCY - unigramFrequency) / (1.5f + MAX_BIGRAM_FREQUENCY);
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final float firstStepStart = 1 + unigramFrequency + (stepSize / 2.0f);
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