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

RegressionSplitNode

class RegressionSplitNode(val split: Split, pos: RegressionNode, neg: RegressionNode, carryover: SeriesStat<WeightedVarianceResult>? = null) : RegressionNode(source)

Routes by split to either pos (true) or neg (false). The optional carryover holds aggregates that don't structurally belong to either child; the pre-split data frozen at split time, or orphans absorbed from a mixed merge. Never written by the update hot path; never read by findLeaf or predict; included by subtreeAggregate.

Constructors

RegressionSplitNode

constructor(split: Split, pos: RegressionNode, neg: RegressionNode, carryover: SeriesStat<WeightedVarianceResult>? = null)

Properties

carryover

@Volatile

var carryover: SeriesStat<WeightedVarianceResult>?

One-shot carry-over aggregate, or null if the split holds no orphan data. Mutated only under the owning RegressionTree's split lock during merges; volatile so concurrent snapshots see a consistent reference.

neg

@Volatile

var neg: RegressionNode

pos

@Volatile

var pos: RegressionNode

split

val split: Split

Predicate routing observations into pos (true) or neg (false).

Functions

findLeaf

open 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.