mirror of
https://github.com/osmarks/random-stuff
synced 2024-11-08 13:39:53 +00:00
30 lines
1.0 KiB
Python
30 lines
1.0 KiB
Python
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import json, math, random
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N_bits = 14
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X_bits = 2 ** 14
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with open("compr.json", "r") as f:
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with open("freqs.json", "w") as g:
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rawfreqs = { int(k): v for k, v in json.load(f)["frequencies"].items() }
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for i in range(1024):
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if i not in rawfreqs:
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rawfreqs[i] = 1
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bpe_freqs = sorted(rawfreqs.items(), key=lambda x: x[1])
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total = sum(map(lambda x: x[1], bpe_freqs))
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table = { k[0]: 1 for k in bpe_freqs }
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for i, freq in bpe_freqs:
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val = max(freq / total * X_bits - 1, 0)
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print(val)
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n = math.floor(val)
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q = val - n
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x = n + (random.random() < q)
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table[i] += x
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diff = X_bits - sum(table.values())
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adjust = random.choices(list(filter(lambda x: table[x] > 1, range(1024))), k=abs(diff))
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if diff > 0:
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for a in adjust:
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table[a] += 1
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elif diff < 0:
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for a in adjust:
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table[a] -= 1
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print(diff, sum(table.values()))
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json.dump(table, g)
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