List index over vector indexes

ddavidds2020

i have multiple GPTSimpleVectorIndex and can find relevant documents when running index.query on each. But somehow if I query a combined list index, like GPTListIndex([index1, index2, index3]), it can't find relevant documents. I see an example of setting the summary for each index with set_text. Is this required for GPTListIndex to work? My indexes each contain a large number of documents so it does not seem reasonable to summarize all first.
https://gpt-index.readthedocs.io/en/latest/guides/use_cases.html#use-case-combining-information-across-multiple-indices

3 comments

LLogan M

Hmm, a list index doesn't need the summaries because by default the queries should be checking every vector index inside the list index.

You should be able to follow this notebook, but replace the keyword index with a list index https://github.com/jerryjliu/gpt_index/blob/main/examples/composable_indices/ComposableIndices.ipynb

LLogan M

Then in the query kwargs, replace keyword_table with list.

You may or may not need to set the text of the vector indexes to a blank string too

AAndreaSel93

@davidds2020 i had your same problem. Let us know if you solve

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List index over vector indexes