when setting output_topic_word_summary=True, still can not get the topic-words summary in output

[Wuliyuanulb]

Describe the bug
in the LightLda module, I wanna get the topic-words summary outputs, setting:
output_topic_word_summary=True,
num_summary_term_per_topic=20
but i can not get the topic words summary in outputs. the only output is the probability of each review belonging to each topic.

Expected behavior
get a summary of topic words, like:
topic0: good, exellent...
topic2: one, two, three...

[antoniovs1029]

Hi, @Wuliyuanulb .

Unfortunately, as you've noted, there's a problem with the output_topic_word_summary parameter, and it actually doesn't make any difference if you set it to True or False.

It seems this problem actually traces back to ML.NET, and I am looking into it right now. It might, or might not, be related to the problem of ML.NET not exposing APIs to get the topic-word summary at all:

dotnet/machinelearning#4322