faiss Kmeans .obj attribute

[TopoKunst]

Summary

Hello,

I have tried to use faiss on clustering problems with faiss.Clustering, and I want to measure the result by some metric. I notice that faiss.Kmeans has an attribute .obj in a notebook file of this repo, but I fail to get it with faiss.Clustering.

I am wondering if faiss.Clustering has this property or some other metrics? Or, could you please tell me how kmeans.obj is computed?

Thank you

Platform

OS:

Faiss version:

Installed from:

Faiss compilation options:

Running on:

• CPU
• GPU

Interface:

• C++
• Python

[mdouze]

please use Clustering::iteration_stats

[TopoKunst]

I use clus.iteration_stats in Python where clus is a faiss.Clustering object, but it reports AttributeError: 'Clustering' object has no attribute 'iteration_stats'.

I read the changelog and find the iteration_stats is added in 1.6.3, while my Faiss version is 1.5.1. Is this the reason that I cannot use it?

My environment does not support conda installation, so I can only use faiss 1.5.1 instead of faiss-cpu or faiss-gpu. Could you pls tell me how this metric is computed? I read faiss/Clustering.cpp and guess it is kind of like accumulative square error between each sample and its centroid?

please use Clustering::iteration_stats

[TopoKunst]

Sorry that I misclose the issue, pls check my first reply.