---
title: "sparsify(batchSize:inputLayout:inputDenseShape:inputValues:output:sparseParameters:workspace:filterParameters:)"
framework: accelerate
role: symbol
role_heading: Type Method
path: "accelerate/bnns/fullyconnectedlayer/sparsify(batchsize:inputlayout:inputdenseshape:inputvalues:output:sparseparameters:workspace:filterparameters:)"
---

# sparsify(batchSize:inputLayout:inputDenseShape:inputValues:output:sparseParameters:workspace:filterParameters:)

Converts a sparse tensor from a standardized sparse layout to a device-specific sparse layout that Fully Connected uses.

## Declaration

```swift
static func sparsify(batchSize: Int = 1, inputLayout layout: BNNS.SparseLayout, inputDenseShape: BNNSNDArrayDescriptor, inputValues: BNNSNDArrayDescriptor, output: inout BNNSNDArrayDescriptor, sparseParameters: BNNS.SparseParameters? = nil, workspace: UnsafeMutableRawBufferPointer? = nil, filterParameters: BNNSFilterParameters? = nil) throws
```

## Parameters

- `batchSize`: The number of input-output pairs to process.
- `layout`: The layout and nonzero indices of the sparse input.
- `inputDenseShape`: The dense shape of the sparse 2D input.
- `inputValues`: A 1D array descriptor that contains the nonzero input values.
- `output`: The destination array descriptor that contains the output-device-optimized BNNS Sparse Fully Connected weights.
- `sparseParameters`: An optional data structure that provides a hint to the sparsity function.
- `workspace`: An optional pointer to a memory region that the function uses as scratch space.
- `filterParameters`: The runtime filter parameters.

## See Also

### Sparse layers

- [BNNSNDArrayGetDataSize(_:)](accelerate/bnnsndarraygetdatasize(_:).md)
- [BNNSNDArrayFullyConnectedSparsifySparseCOO(_:_:_:_:_:_:_:_:_:)](accelerate/bnnsndarrayfullyconnectedsparsifysparsecoo(_:_:_:_:_:_:_:_:_:).md)
- [BNNSNDArrayFullyConnectedSparsifySparseCSR(_:_:_:_:_:_:_:_:_:_:)](accelerate/bnnsndarrayfullyconnectedsparsifysparsecsr(_:_:_:_:_:_:_:_:_:_:).md)
- [BNNS.SparseParameters](accelerate/bnns/sparseparameters.md)
- [BNNS.SparseLayout](accelerate/bnns/sparselayout.md)
- [BNNS.SparsityType](accelerate/bnns/sparsitytype.md)
- [BNNSSparsityTypeUnstructured](accelerate/bnnssparsitytypeunstructured.md)