It seems grouping and counting, then ranking the topics returned by
Daily and Weekly trend API does not give the correct top topics shown
in home page of Can anyone tell me how the "Popular
topics today" and "Popular topics this week" works in
i.e. after parsing, topics
are simply counted and ranked. however, the result is about less than
50% accurate to what is displayed in the home page. Anyone knows the
actual algorithm used in the site?

I just noticed yesterday that Today and Weekly list no longer have
hashtag topics? Am I correct on this observation?

Thanks for any lead on this.

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