@menu
* Locality Sensitive Hashing
* Sketch for L1 Distance
* Sketch for L2 Distance
* Sketch for Cosine Distance
@end menu

@anchor{x-index}
@node Raw Table
@subsection Raw Table
@table @asis
@item @emph{Name:}
raw
@item @emph{Type:}
@code{CASS_DATA}
@item @emph{Vector type:}
@code{CASS_VEC_ANY}
@item @emph{Vecset type:}
@code{CASS_ANY}
@item @emph{Vector distance type:}
@code{CASS_ANY}
@item @emph{Vecset distance type:}
@code{CASS_ANY}
@item @emph{Parameters:}
@item @emph{Description:}
This is the raw table holding the real feature data and is not actually an index
or sketch.
@end table

@node Locality Sensitive Hashing
@subsection Locality Sensitive Hashing
@table @asis
@item @emph{Name:}
LSH
@item @emph{Type:}
@code{CASS_VEC_INDEX}
@item @emph{Vector type:}
@code{CASS_VEC_FLOAT}
@item @emph{Vecset type:}
@code{CASS_ANY}
@item @emph{Vector distance type:}
@code{CASS_VEC_DIST_TYPE_L1}
@item @emph{Vecset distance type:}
@code{CASS_ANY}
@item @emph{Parameters:}
@item @emph{Description:}
@end table


@node Sketch for L1 Distance
@subsection Sketch for L1 Distance
@table @asis
@item @emph{Name:}
sketch1
@item @emph{Type:}
@code{CASS_VEC_SKETCH}
@item @emph{Vector type:}
@code{CASS_VEC_FLOAT}
@item @emph{Vecset type:}
@code{CASS_ANY}
@item @emph{Vector distance type:}
@code{CASS_VEC_DIST_TYPE_L1}
@item @emph{Vecset distance type:}
@code{CASS_ANY}
@item @emph{Parameters:}
@table @gcctabopt
@item -B @var{#bit}
Size of sketch in bits.
@item -H @var{#xor}
How many bits to XOR in order to generate one sketch bit.
@item -min @var{min_array}
The minimal value of each dimension in the dataset.
@item -rng @var{range_array}
The range of each dimension in the dataset
@item -weight @var{weight_array}
The weight of each dimension in the dataset.  This parameter is optional and has
a default value of @code{(1,1,...,1)}.
@end table
@item @emph{Description:}
@end table

@node Sketch for L2 Distance
@subsection Sketch for L2 Distance
@table @asis
@item @emph{Name:}
sketch2
@item @emph{Type:}
@code{CASS_VEC_SKETCH}
@item @emph{Vector type:}
@code{CASS_VEC_FLOAT}
@item @emph{Vecset type:}
@code{CASS_ANY}
@item @emph{Vector distance type:}
@code{CASS_VEC_DIST_TYPE_L2}
@item @emph{Vecset distance type:}
@code{CASS_ANY}
@item @emph{Parameters:}
@table @gcctabopt
@item -M @var{#bit}
Size of sketch in bits.
@item -W @var{window}
Window size.
@end table
@item @emph{Description:}
@end table

@node Sketch for Cosine Distance
@subsection Sketch for Cosine Distance
@table @asis
@item @emph{Name:}
sketch3
@item @emph{Type:}
@code{CASS_VEC_SKETCH}
@item @emph{Vector type:}
@code{CASS_VEC_FLOAT}
@item @emph{Vecset type:}
@code{CASS_ANY}
@item @emph{Vector distance type:}
@code{CASS_VEC_DIST_TYPE_COS}
@item @emph{Vecset distance type:}
@code{CASS_ANY}
@item @emph{Parameters:}
@table @gcctabopt
@item -M @var{#bit}
Size of sketch in bits.
@end table
@item @emph{Description:}
@end table