Add paragraph sequence field

[JasonLo]

To support a downstream feature in the USGS project, we need to add a field in Weaviate to indicate paragraph order within a document. The required changes are:

1. Redefine the Weaviate schema.
2. Update the preprocessor to include paragraph_order.
3. Update the ingest pipeline.
4. Rebuild Weaviate (if necessary).

Assuming the raw text remains unchanged, we can likely skip re-embedding by using the old embeddings with paragraph_hash. this should be safe and efficient.

[JasonLo]

Discussed the update should be as follow:

Steps:

1. Gather a master list of docid.
2. Subset docid from Geoarchive, CriticalMASS.
3. For each docid, call preprocessorv2 (v1 + paragraph ordering).
4. Compare hashed_text for each paragraph. If unchanged, retrieve embedding data from existing Weaviate.
5. If changed, drop paragraphs with the same docid and reprocess everything in it.

[iross]

Additional step 0: Clear space by dropping Passage class (plus clean up other junk on that machine) and backup existing collection. Backup started as of 2024-07-29 10:45.

​To support a downstream feature in the USGS project

Is there an issue outlining this that we could link to here? (edited format)

[JasonLo]

UW-xDD/text2graph_llm#20

[JasonLo]

@ilmcconnell , @iross

Started the patch for paragraph order, but it's slower than expected due to the lack of a batch update function. Estimated completion time: 4-5 days. Will check progress on 8/7.

[JasonLo]

#119
The patch has been completed ahead of schedule.