Struct QuantizedVector 

pub struct QuantizedVector {
    pub data: Vec<u8>,
    pub scale: f32,
    pub bits: u8,
    pub dimensions: usize,
}

A quantized vector with optimal rescaling

Storage format:

• data: Packed quantized values (multiple values per byte)
• scale: Optimal rescaling factor for this vector
• bits: Number of bits per dimension

Fields

data: Vec<u8>

Packed quantized values

Format depends on bits_per_dim:

• 2-bit: 4 values per byte
• 3-bit: Not byte-aligned, needs special packing
• 4-bit: 2 values per byte
• 8-bit: 1 value per byte

scale: f32

Optimal rescaling factor for this vector

This is the scale factor that minimized quantization error during the rescaling search.

bits: u8

Number of bits per dimension

dimensions: usize

Original vector dimensions (for unpacking)

Implementations

impl QuantizedVector

pub fn new(data: Vec<u8>, scale: f32, bits: u8, dimensions: usize) -> Self

Create a new quantized vector

pub fn memory_bytes(&self) -> usize

Get memory usage in bytes

pub fn compression_ratio(&self) -> f32

Get compression ratio vs original f32 vector

Trait Implementations

impl Clone for QuantizedVector

fn clone(&self) -> QuantizedVector

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QuantizedVector

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QuantizedVector

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for QuantizedVector

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.