JiHwan Yeo

`Sigmoid` (defined as `logistic` in ONE runtime) might be a good candidate operation since it takes a substantial portion in some models.

FYI, related article and paper. - Optimizing TensorFlow Lite Runtime Memory : https://blog.tensorflow.org/2020/10/optimizing-tensorflow-lite-runtime.html - Efficient Memory Management for Deep Neural Net Inference : https://arxiv.org/abs/2001.03288