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Title: Succinct Source Coding of Deep Neural Networks

Paper content:
Deep neural networks have shown incredible performance for inference tasks in a variety of domains.
Unfortunately, most current deep networks are enormous cloud-based structures that require significant storage space, which limits scaling of deep learning as a service (DLaaS) and use for on-device augmented intelligence.
This paper finds algorithms that directly use lossless compressed representations of deep feedforward networks (with synaptic weights drawn from discrete sets), to perform inference without full decompression.
The basic insight that allows less rate than naive approaches is the recognition that the bipartite graph layers of feedforward networks have a kind of permutation invariance to the labeling of nodes, in terms of inferential operation and that the inference operation depends locally on the edges directly connected to it.
We also provide experimental results of our approach on the MNIST dataset.
Deep learning has achieved incredible performance for inference tasks such as speech recognition, image recognition, and natural language processing.
Most current deep neural networks, however, are enormous cloud-based structures that are too large and too complex to perform fast, energyefficient inference on device or for scaling deep learning as a service (DLaaS).
Compression, with the capability of providing inference without full decompression, is important.
Universal source coding for feedforward deep networks having synaptic weights drawn from finite sets that essentially achieve the entropy lower bound were introduced in BID0 .
Here, we provide-for the first time-an algorithm that directly uses these compressed representations for inference tasks without complete decompression.
Structures that can represent information near the entropy bound while also allowing efficient operations on them are called succinct structures (2; 3; 4).
Thus, we provide a succinct structure for feedforward neural networks, which may fit on-device and enable scaling of DLaaS.Related Work: There has been recent interest in compact representations of neural networks (5; 6; 7; 8; 9; 10; 11; 12; 13; 14) .
While most of these algorithms are lossy, we provide an efficient lossless algorithm, which can be used on top of any lossy algorithm that quantizes or prunes network weights; prior work on lossless compression of neural networks either used Huffman coding in a way that did not exploit invariances or was not succinct and required full decompression for inference.
The proposed algorithm builds on the sublinear entropy-achieving representation in (1) but is the first time succinctness-the further ability to perform inference with negligible space needed for partial decompression-has been attempted or achieved.
Our inference algorithm is similar to arithmetic decoding and so computational performance is also governed by efficient implementations of arithmetic coding.
Efficient high-throughput implementations of arithmetic coding/decoding have been developed for video, e.g. as part of the H.264/AVC and HEVC standards (15; 16).

assistant: text: This paper finds algorithms that directly use lossless compressed representations of deep feedforward networks, to perform inference without full decompression.