Recall stays 0.0001

[zjulearning]

Recall stays 0.0001

[fc731097343]

The way we read the file is to read the first number (the dimension 128 in your case) of each vector as an "unsigned int" in C++. Then we read the vector as a sequence of float in C++ (float32 in Python). Please see any test*.cpp in the test dir for example.

I think you should write these two parts separately.
Specifically, you should write an int32 then write 128 float32 for each row of the matrix. Hope it can solve your problem.

[GertjanBrouwer]

Thank you very much, i misread the documentation and saved every byte as int32. For anyone else with this problem. I use this to save a single image descriptors:
for descriptor in descriptors:
dimension_array = array('i', [128])
dimension_array.tofile(output_file)
float_array = array('f', descriptor)
float_array.tofile(output_file)