The three key aspects of NAS: search space, search strategy, and evaluation strategy. (IMAGE)
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NAS methods can generally be classified based on tailored designs from the following aspects: search space, search strategy, and evaluation strategy. In particular, search space can be further categorized into two types, macro space for the entire network and micro space for modules or blocks of the neural network. The search strategy is to discover the optimal architecture from the search space, which needs to balance the effectiveness and efficiency simultaneously. The evaluation strategy decides how to estimate the performance of different architectures.
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