Doc-occurrence-weighted Activation

Doc-occurence-weighted activation is working, after some pretty massive restructuring of the database. Now the table I’m using has only four-tuples, [ id | idea | sep | activation ], and each cell in the previous setup (the 2D array) is now held by one row in this new structure. The most efficient way to add in by-row activation I’ve found is to insert a temporary table and join it with the idea/entry rows, multiplying across by number of occurrences (the weight), then summing down within the group (the group being an SEP entry).

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