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metrak
2016 Jul 30
2
Letor: returning MSet after re-ranking
...ic API that don't get
> used by end users. However because LTR is outside the Xapian build
> tree, we can't easily give it privileged access to Xapian internals.
>
Sorry for a delayed response.
The way I was thinking of performing reranking with updated weights was to
add a class MSetRanker (basically containing a copy of MSet to be
re-ranked) to Xapian public API, which would be a friend of MSet::Internal
class so that it could access/update the weights and sort MSetItems
accordingly, returning an updated MSet.
As you pointed out, two obvious issues with this are: 1) Unnecessary
a...