nervPass

function nervPass(
   hdIn,
   ldIn,
   opts?): Nerv;

Defined in: passes/nerv.ts:280

NeRV in one call, single-threaded. See nerv for the metric itself.

Parameters

Parameter	Type
hdIn	PointsInput
ldIn	PointsInput
opts	NervOptions

Returns

Nerv

Example

import { nervPass, nerv } from "@saehrimnir/sickle";

// Fits a per-point sigma in the data by bisection, then reuses it for the
// projection. Defaults: lambda 0.5, perplexity 30.
const p = nervPass(data, projection, { lambda: 0.5, perplexity: 30 });

nerv(p).value;  // 0.4611
p.recall;       // 77.6049 — a scalar, as is p.precision
p.local[0];     // per-point contributions, localKind "mean"
p.sigma[0];     // the bandwidth fitted for point 0