One mini-batch from [`Virtual.MaterializeFloatBatches`].

Layout of [`FloatBatch.FeaturesFlat`].

Row order when splitting a frame into mini-batches.

Missing-value handling used by [`Virtual.MaterializeFloatBatches`].

Helpers that can be used when implementing Lookup

Diagnostic access to LookupRange configuration stored on a virtual column source.

Shared LookupRange / GetSubVector logic for ordinal virtual sources.

How `LookupRange` behaves on searchable virtual columns (quality / correctness axis).

LookupRange mode supplied explicitly for a searchable column.

Ordinal pull-on-read virtual source with optional LookupRange semantics.

Resolved LookupRange modes for one frame column (at most one kind is set).

Strided custom range used by filter / Search (same shape as step-based LookupRange).

Provides static methods for creating virtual series and virtual frames. Those provide necessary wrapping around `IVirtualVectorSource` values

Classified LookupRange kind for virtual column diagnostics.

Helpers for configuring searchable columns on virtual sources.

Options for [`Virtual.ReadCsv`].

Describes how the row index of a virtual frame is stored.

Helpers for building [`VirtualSearchColumn`] lists.

One searchable column on [`Virtual.ReadCsv`] / [`Virtual.ReadParquet`].

How to configure LookupRange for one searchable column at virtual frame load time.