Theano vs MNN: What are the differences?

Theano: Define, optimize, and evaluate mathematical expressions involving multi-dimensional arrays efficiently. Theano is a Python library that lets you to define, optimize, and evaluate mathematical expressions, especially ones with multi-dimensional arrays (numpy.ndarray). Using Theano it is possible to attain speeds rivaling hand-crafted C impleme; MNN: A lightweight deep neural network inference engine (by Alibaba). It is a lightweight deep neural network inference engine. It loads models and do inference on devices. At present, it has been integrated in more than 20 apps of Alibaba-inc, such as Taobao, Tmall, Youku and etc., covering live broadcast, short video capture, search recommendation, product searching by image, interactive marketing, equity distribution, security risk control and other scenarios. In addition, it is also used on embedded devices, such as IoT.

Theano and MNN can be categorized as "Machine Learning" tools.

Theano and MNN are both open source tools. Theano with 9.11K GitHub stars and 2.53K forks on GitHub appears to be more popular than MNN with 3.77K GitHub stars and 784 GitHub forks.