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This is the first PR to solve issue #744 .
This PR removes the use of
getPositionOfCurrIdx()
, which is a specialized interface to get selected pos of a flat state.The goal of this and the following PRs is to remove the concept of
flat/unflat
in the backend, so the front end still keeps track of flat and unflat for factorized structures, while the backend only needs to differentiate the cardinality of 1 and N.For any two vectors with two different states, we allow computation over the cartesian product of 1 X N, 1 X 1 and N X 1.
For N X N, it is only allowed for two vectors with the same state.