A more efficient tree construction algorithm for the common case of sparse data was outlined in .

In spite of that, she seemed curiously real, given the sparse data we had.

For a retailer, it may simply be sparse data on sales of a particular SKU.

Tagged columns make this possible because of their good handling of both multi-valued and sparse valued data.

There are sparse data on the role of private practice in Iraq.

These differences between disciplines have been present for at least 40 years, and sparse earlier data suggests that they date back 70 years or more.

This is a problem of model reconstruction from sparse data in one time and two space dimensions.

What sparse data exist testify to the riskiness of saving individual species.

Voidhawks, however, with their mass perception ability, had added to the sparse data over the centuries.

Recently, researchers reanalyzed this early whaling data, along with more recent, but much sparser, sighting data.