ai.onnx.Shrink

ai.onnx · standard ONNX operator · ONNX opset ≥ 9

Description

Applies an elementwise shrinkage function to a numeric tensor: values outside [-lambd, lambd] are shifted toward zero by bias, and values within the range are set to 0. Formally: y = x + bias if x < -lambd; y = x - bias if x > lambd; otherwise y = 0. Output has the same shape and dtype as the input.

See the ONNX Shrink spec for the reference semantics.

Inputs

Name Upstream name Logical dtype Rank Shape Description Presence
x input T Input numeric tensor to shrink. required

Outputs

Name Upstream name Logical dtype Rank Shape Description Presence
y output T same as x same as x Output tensor; same shape and dtype as the input. required

Attributes

Default values (overridable per request):

Attribute Default Description
bias 0 Value added to (or subtracted from) elements outside the shrink threshold before outputting; default is 0.
lambd 0.5 Threshold defining the dead-zone around zero; elements with absolute value at most lambd are set to 0; default is 0.5.

Type constraints

Variable Allowed dtypes
T float32, float16, int32, int16, uint32, int8, uint8

Files

Use with @huggingface/kernels

npm install --save-exact @huggingface/kernels@0.0.1-preview.2

Required output shapes and logical data types are inferred from the supplied inputs and attributes; result tensors are allocated automatically.

The version: 1 option selects the published kernel contract; it is independent of any operator opset, contrib since_version, or model version. It follows the v1 branch as fixes land. To pin exact artifact bytes, pass a 40-character commit revision instead of version.

Replace each *Data placeholder with a typed array containing the corresponding input data.

import { getKernel } from "@huggingface/kernels";

const kernel = await getKernel("webgpu-kernels/ai.onnx.Shrink", { version: 1 });
const { y } = await kernel({ x: { data: xData, shape: [2, 2] } });
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Requires WebGPU support. See the compatibility table.