kumulant/com.eignex.kumulant.stat.regression.tree/RegressionAuditLeaf

RegressionAuditLeaf

class RegressionAuditLeaf(val arm: SeriesStat<WeightedVarianceResult>, val candidates: List<Split>, val pos: List<SeriesStat<WeightedVarianceResult>>, val neg: List<SeriesStat<WeightedVarianceResult>>) : RegressionLeafNode(source)

Leaf that tracks per-candidate pos/neg stats. When a candidate clears the Hoeffding- bound test, this leaf is replaced by a RegressionSplitNode. The candidate subset is per-leaf ; picked at leaf birth; so mtry-style random subspace selection lives at the leaf level.

Constructors

RegressionAuditLeaf

constructor(arm: SeriesStat<WeightedVarianceResult>, candidates: List<Split>, pos: List<SeriesStat<WeightedVarianceResult>>, neg: List<SeriesStat<WeightedVarianceResult>>)

Properties

arm

open override val arm: SeriesStat<WeightedVarianceResult>

The leaf's weighted-variance accumulator.

candidates

val candidates: List<Split>

Candidate splits being evaluated at this leaf.

neg

val neg: List<SeriesStat<WeightedVarianceResult>>

Per-candidate accumulator for observations that route false.

observationsSinceLastCheck

val observationsSinceLastCheck: AtomicLong

Counter throttling audit work to every Nth observation. Atomic so concurrent updaters don't lose ticks; the split decision is taken by the thread that crosses the period boundary, under the tree's split lock.

pos

val pos: List<SeriesStat<WeightedVarianceResult>>

Per-candidate accumulator for observations that route true.

Functions

findLeaf

override fun findLeaf(row: VectorView): RegressionLeafNode

Walk to the leaf this row resolves to.

snapshot

fun RegressionNode.snapshot(): TreeNodeResult

Freeze a live tree node into an immutable snapshot. Internal split aggregates are derived from the snapshotted children so the wire format stays stable even though live splits hold no arm.