Struct PartitionedEFPostingList 

pub struct PartitionedEFPostingList {
    pub doc_ids: PartitionedEliasFano,
    pub term_freqs: Vec<u8>,
    pub tf_bits: u8,
    pub max_tf: u32,
    pub blocks: Vec<PEFBlockInfo>,
    pub max_score: f32,
}

Partitioned Elias-Fano posting list with term frequencies and BlockMax

Fields

doc_ids: PartitionedEliasFano

Document IDs (Partitioned Elias-Fano encoded)

term_freqs: Vec<u8>

Term frequencies (packed)

tf_bits: u8

Bits per term frequency

max_tf: u32

Maximum term frequency

blocks: Vec<PEFBlockInfo>

Block metadata for BlockMax WAND

max_score: f32

Global maximum score

Implementations

impl PartitionedEFPostingList

pub fn compute_bm25_upper_bound(max_tf: u32, idf: f32) -> f32

pub fn from_postings(doc_ids: &[u32], term_freqs: &[u32]) -> Self

Create from postings

pub fn from_postings_with_idf( doc_ids: &[u32], term_freqs: &[u32], idf: f32, ) -> Self

Create from postings with IDF for block-max scores

pub fn get_tf(&self, pos: u32) -> u32

Get term frequency at position

pub fn len(&self) -> u32

Number of documents

pub fn is_empty(&self) -> bool

Check if empty

pub fn serialize<W: Write>(&self, writer: &mut W) -> Result<()>

Serialize

pub fn deserialize<R: Read>(reader: &mut R) -> Result<Self>

Deserialize

pub fn iterator(&self) -> PartitionedEFPostingIterator<'_>

Create iterator

pub fn compression_info(&self) -> (usize, usize)

Get compression ratio compared to standard EF

Trait Implementations

impl Clone for PartitionedEFPostingList

fn clone(&self) -> PartitionedEFPostingList

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PartitionedEFPostingList

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

Formats the value using the given formatter.