[EuiIcon] Add tokenSparseVector

[carlosdelest]

sparse_vector field type is being included as part of Elasticsearch 8.11 (issue).

It would be good to provide a token in EUI for this field type.

We could make this a small variation of dense_vector so it highlights the similar use case and data type.

[cee-chen]

👋 Hey Carlos!! Long time no see! :)

@MichaelMarcialis @andreadelrio Can I loop y'all in on this one to respond on whether we do/don't want to do this, and if we do, what a potential design might look like?

[MichaelMarcialis]

@carlosdelest, @cee-chen: I'd be happy to help make a token for sparse vector. Is my understanding correct that the difference between sparse and dense vector is that sparse vectors have mostly zero values and dense vectors have mostly non-zero values? If so, it might be wise for us to also update the existing dense vector icon to something more unique than the current array-like brackets icon. Just let me know if my understanding is correct and I can crank something out.

[carlosdelest]

HI @MichaelMarcialis ! Your understanding is correct. Both are float vectors, but in a sparse vector most elements are zero.

Thanks for looking into this!

[MichaelMarcialis]

@carlosdelest: Here's a quick stab at adding a sparse vector icon and updating the existing dense vector icon to match (showing both color and mono versions). Let me know if this will do the trick for you, and I'll put together an EUI PR to add it in. Thanks!

[carlosdelest]

@MichaelMarcialis , I love this! The concept is quite clear to me.

Maybe moving the sparse non-zero values closer to the center would help differentiate those from the square brackets? Something like:

Thanks for looking into this!