Struct SparseEmbeddingConfig 

pub struct SparseEmbeddingConfig {
    pub model: SparseEmbeddingModelType,
    pub batch_size: usize,
    pub max_length: usize,
    pub show_download_progress: bool,
    pub cache_dir: Option<PathBuf>,
    pub acceleration: Option<AccelerationConfig>,
    pub max_embed_duration_secs: Option<u64>,
}

Configuration for the sparse-embedding pipeline.

Controls which model to use, batching, and download/cache behavior for the local ONNX SPLADE model.

Fields

model: SparseEmbeddingModelType

The sparse-embedding model to use (defaults to the “opensearch-v3-distill” preset).

batch_size: usize

Batch size for local ONNX inference.

SPLADE emits a [seq, vocab] logit tensor per document, so memory scales with batch size — keep this modest.

max_length: usize

Maximum token sequence length for the tokenizer.

show_download_progress: bool

Show model download progress (local ONNX path only).

When enabled, transfer progress for the model, tokenizer and config files is reported at info level on the xberg::model_download target while they download (#279). A warm Hugging Face cache transfers nothing and so reports nothing. Ignored by SparseEmbeddingModelType::Plugin, which downloads no model.

cache_dir: Option<PathBuf>

Optional alternate Hugging Face cache root for model files.

When unset, hf-hub follows the standard Hugging Face environment and platform cache conventions.

acceleration: Option<AccelerationConfig>

Hardware acceleration for the sparse-embedding ONNX model.

max_embed_duration_secs: Option<u64>

Maximum wall-clock duration (in seconds) for a single embed call when using SparseEmbeddingModelType::Plugin. None disables the timeout.

Trait Implementations

impl Clone for SparseEmbeddingConfig

fn clone(&self) -> SparseEmbeddingConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparseEmbeddingConfig

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

Formats the value using the given formatter.

impl Default for SparseEmbeddingConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SparseEmbeddingConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SparseEmbeddingConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.