I had followed the issue #25 and create a index consist of some documents (512,) dimension. When I have searched search all of those documents. Some results give me score 1.0 with the id which I searched for, but some results give me socre 0.5~0.6 with the id not the id I looked for. Please tell me the reason why this happens. Could you help me out to solve this problems? Hope you response soon. Thanks!