2024-10-22 09:46:48 -07:00
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# Copyright (c) Meta Platforms, Inc. and affiliates.
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2019-05-28 16:17:22 +02:00
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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from __future__ import print_function
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import faiss
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from datasets import load_sift1M, evaluate
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xb, xq, xt, gt = load_sift1M()
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nq, d = xq.shape
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k = 32
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for nbits in 4, 6, 8, 10, 12:
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index = faiss.IndexPQ(d, 8, nbits)
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index.train(xt)
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index.add(xb)
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t, r = evaluate(index, xq, gt, k)
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print("\t %7.3f ms per query, R@1 %.4f" % (t, r[1]))
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del index
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