How to troubleshoot sentence embedding clustering

Hello, I’ve made sentence embeddings of my documents and want to do topic modeling by clustering these documents.

I’ve done dimensionality reduction and clustering and the results are ok. I used UMAP and HDBSCAN.

How can I trouble shoot if my dimensionality reduction, clustering algorithm or sentence embeddings are the issue for clustering things that maybe should go somewhere else.

On top of that, I’ve read that doing dimensionality reduction but reducing to a medium number of dimensions (50, for …

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