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Merged
merged 2 commits into from
Feb 13, 2025
Merged

Update cosine_similarity.cc #2548

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5275365
Update cosine_similarity.cc
Zheng-Bicheng Nov 7, 2024
9faf1b5
Merge branch 'PaddlePaddle:develop' into develop
Zheng-Bicheng Feb 12, 2025
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11 changes: 3 additions & 8 deletions fastdeploy/vision/utils/cosine_similarity.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -23,24 +23,19 @@ float CosineSimilarity(const std::vector<float>& a, const std::vector<float>& b,
FDASSERT((a.size() == b.size()) && (a.size() != 0),
"The size of a and b must be equal and >= 1.");
size_t num_val = a.size();
float mul_ab = 0.f;
if (normalized) {
float mul_a = 0.f, mul_b = 0.f, mul_ab = 0.f;
for (size_t i = 0; i < num_val; ++i) {
mul_a += (a[i] * a[i]);
mul_b += (b[i] * b[i]);
mul_ab += (a[i] * b[i]);
}
return (mul_ab / (std::sqrt(mul_a) * std::sqrt(mul_b)));
return mul_ab;
}
auto norm_a = L2Normalize(a);
auto norm_b = L2Normalize(b);
float mul_a = 0.f, mul_b = 0.f, mul_ab = 0.f;
for (size_t i = 0; i < num_val; ++i) {
mul_a += (norm_a[i] * norm_a[i]);
mul_b += (norm_b[i] * norm_b[i]);
mul_ab += (norm_a[i] * norm_b[i]);
}
return (mul_ab / (std::sqrt(mul_a) * std::sqrt(mul_b)));
return mul_ab;
}

} // namespace utils
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