Enum SurfaceAblation 

pub enum SurfaceAblation {
    Lexical,
    GlobalPpr,
    TaskPpr,
    PprMmr,
    PprQuotas,
    PprOptimizer,
}

Harness-level surface ranking modes for the PPR ablation matrix. Every mode runs the PRODUCTION surface pipeline (render_ablation_surface → build_surface_staged) with exactly one stage toggled — never a harness reimplementation of ranking. lexical switches every stage off (lexical-only); global-ppr disables task PPR; task-ppr is the full task pipeline; ppr-mmr/ppr-quotas/ppr-optimizer disable the MMR/quotas/optimizer tail stages respectively. The ablation rows are the production rows with one stage removed. See benchmarks/external/README.md.

Variants

Lexical

Lexical goal match only — every pipeline stage off.

GlobalPpr

Global PPR + lexical (no task seeds): task-PPR stage off.

TaskPpr

The production task surface pipeline (every stage on).

PprMmr

Production pipeline with the MMR diversity stage off.

PprQuotas

Production pipeline with the token-aware quota stage off.

PprOptimizer

Production pipeline with the value/token budget optimizer off.

Implementations

impl SurfaceAblation

pub fn parse(variant: &str) -> Option<SurfaceAblation>

Parse a variant name; None for non-ablation variants.

pub fn as_str(&self) -> &'static str

pub fn stages(&self) -> SurfacePipelineStages

The pipeline-stage toggle for this ablation: each mode disables exactly one stage of the production pipeline (lexical disables everything — lexical-only); every other stage runs exactly as production runs it.

Trait Implementations

impl Clone for SurfaceAblation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SurfaceAblation

impl Debug for SurfaceAblation

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

Formats the value using the given formatter.

impl Eq for SurfaceAblation

impl PartialEq for SurfaceAblation

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SurfaceAblation