Find reuse of topics across publications

Question

Hi Developers, 
 I am trying to get the reuse percentage of topics in a publication. 
 I am getting all baseline topics and find each topics in all publication baseline in SDL repository and if any item found in other baseline considering as that topic is reused. for 50-100 topic publication it takes 2-4 hours to get the response. some of the publication have 1000+ topics, so this approach is not useful. Is there any way to find reuse in ISHRemote or any other modules? 
 
 Thanks 
 Roopesh

Roopesh N · Accepted Answer

Yes, this is really a good Idea. this will save API response time. Thank you for the suggestion, I have to create a script to download all baseline.

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Find reuse of topics across publications