c++ - What are the differences between the various boost ublas sparse vectors? -


In the boost :: numerical :: ublas , there are.

I can see that mapped_vector is essentially a value from a stl :: map index, which is not found in all values ​​0 (or Whatever is the normal value).

but compressed_vector and coordinator_ector .

The documentation on the information is sparse (ha ha). Can anyone clarify? I am trying to remove the algorithmic complexity of adding objects to various Vectors and Dot products between two such Vectors.

In a very useful answer, it was reported that the compressed_ vector is very similar, but it seems that, for example, is only for the collection of matrix - not just vectors.

I think that the unambiguous_error is the type of storage, but I am not sure the specification is for it, or if I am creating a compressed_quark with 200,000,000 sizes, but only With 5 non-zero locations, is it any less efficient than any other than making a compressed_ vector with 10 and 5 non-zero locations?

Many thanks!

Instead of matrix with vector and you have the answer


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