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Array APIs to write ONNX Graphs
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sdpython/onnx-array-api
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onnx-array-api implements a numpy API for ONNX.It gives the user the ability to convert functions writtenfollowing the numpy API to convert that function into ONNX aswell as to execute it.
importnumpyasnpfromonnx_array_api.npximportabsolute,jit_onnxfromonnx_array_api.plotting.text_plotimportonnx_simple_text_plotdefl1_loss(x,y):returnabsolute(x-y).sum()defl2_loss(x,y):return ((x-y)**2).sum()defmyloss(x,y):returnl1_loss(x[:,0],y[:,0])+l2_loss(x[:,1],y[:,1])jitted_myloss=jit_onnx(myloss)x=np.array([[0.1,0.2], [0.3,0.4]],dtype=np.float32)y=np.array([[0.11,0.22], [0.33,0.44]],dtype=np.float32)res=jitted_myloss(x,y)print(res)print(onnx_simple_text_plot(jitted_myloss.get_onnx()))
[0.042]opset: domain='' version=18input: name='x0' type=dtype('float32') shape=['', '']input: name='x1' type=dtype('float32') shape=['', '']Sub(x0, x1) -> r__0 Abs(r__0) -> r__1 ReduceSum(r__1, keepdims=0) -> r__2output: name='r__2' type=dtype('float32') shape=None
It supports eager mode as well:
importnumpyasnpfromonnx_array_api.npximportabsolute,eager_onnxdefl1_loss(x,y):err=absolute(x-y).sum()print(f"l1_loss={err.numpy()}")returnerrdefl2_loss(x,y):err= ((x-y)**2).sum()print(f"l2_loss={err.numpy()}")returnerrdefmyloss(x,y):returnl1_loss(x[:,0],y[:,0])+l2_loss(x[:,1],y[:,1])eager_myloss=eager_onnx(myloss)x=np.array([[0.1,0.2], [0.3,0.4]],dtype=np.float32)y=np.array([[0.11,0.22], [0.33,0.44]],dtype=np.float32)res=eager_myloss(x,y)print(res)
l1_loss=[0.04]l2_loss=[0.002][0.042]
The library is released onpypi/onnx-array-apiand its documentation is published at(Numpy) Array API for ONNX.
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