keras默认的backend是tensorflow,更改成theano方法如下:vim ~/.keras/keras.json { "image_dim_ordering":"tf", tf是tensorflow的数据格式,这里也要改成th,即theano的数据格式,其实就是维度顺序,keras中文文档里有 "epsilon":1e-07, "floatx":"float32", "backend":"tensorflow" }