Daniel Lemire

icon indicating a website link http://lemire.me/en/ icon indicating an email [email protected]

icon company Université du Québec (TELUQ) icon location Montreal, Quebec, Canada icon location Daniel Lemire is a computer science professor. His research is on software performance in data engineering.

Results 1864 comments of Daniel Lemire

Design a highly compressed serialized format

@richardstartin I think I am missing details. An in-memory RoaringBitmap can be appended to. Obviously you know this...

Design a highly compressed serialized format

@richardstartin Ok. Now I understand... but your approach would require scanning the whole data to answer queries like "contains?" and so forth, right? I am not opposed to it, but...

Design a highly compressed serialized format

@richardstartin Would you be game to write up a design document?

fix the difference of the map in java and c when save to clickhouse.

@panda0120 This PR seems acceptable, but do you have tests to validate the change?

Leaner 64 bit bitmap

Yes. Sure. So you are suggesting we create a new RoaringBitmap64, or something of the kind... for applications where Roaring64NavigableMap is a bad fit?

Leaner 64 bit bitmap

Agreed.

Leaner 64 bit bitmap

My instinct in these cases is to first get representative data and do experiments.

Leaner 64 bit bitmap

Isn't this issue resolved?

JUnit performance tests

Can you be more specific regarding your proposal?

JUnit performance tests

@richardstartin Why did you close this? I very much share your concerns regarding build speed. I recommended merging some PRs that you might have opposed on this basis, but it...