Hardware-Oriented Compression of Long Short-Term Memory for Efficient Inference
Hardware-Oriented Compression of Long Short-Term Memory for Efficient Inference
复制标题
面向硬件的长短期内存压缩以实现高效推理
DOI:
10.1109/lsp.2018.2834872
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发表时间:
2018-05
影响因子:
3.9
通讯作者:
Zongfeng Wang
中科院分区:
文献类型:
--
作者:
Zhisheng Wang;Jun Lin;Zongfeng Wang
Long short-term memory (LSTM) and its variants have been widely adopted in processing sequential data. However, the intrinsic large memory requirement and high computational complexity make it hard to be employed in embedded systems. This incurs the need of model compression and dedicated hardware accelerator for LSTM. In this letter, efficient clipped gating and top-k pruning schemes are introduced to convert the dense matrix computations in LSTM into structured sparse-matrix-sparse-vector multiplications. Then, mixed quantization schemes are developed to eliminate most of the multiplications in LSTM. The proposed compression scheme is well suited for efficient hardware implementations. Experimental results show that the model size and the number of matrix operations can be reduced by 32× and 18.5×, respectively, at a cost of less than 1% accuracy loss on a word-level language modeling task.
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