3
$\begingroup$

When plotting the number of topics on the x-axis and the coherence score on the y-axis, I had expected to see an "elbow" (for example, here and here).

In this case, however, the plot does not have a unique elbow, and instead of becoming flatter, the coherence score keeps increasing, as shown in the plot below:enter image description here

In such a scenario, how should the optimal number of topics be chosen?

I have used LDA (from gensim) for topic modeling.

$\endgroup$
0

1 Answer 1

0
$\begingroup$

You should focus more on your pre-processing step, noise in is noise out. Moreover, a coherence score of < 0.6 is considered bad. Lastly, look at your y-axis - there's not much difference between 10 and 35 topics.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.