So What Do We Need To Do? Find a Useful Theory of Networking

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Presentation transcript:

So What Do We Need To Do? Find a Useful Theory of Networking As opposed to ad-hoc approaches Again, consider the success of convolutional neural networks What is the “interlingua” for networking? Public Data Sets Skill Sets But watch out https://papers.nips.cc/paper/5656-hidden-technical-debt-in-machine-learning-systems.pdf Apply state of the art machine learning algorithms Build ML platforms and associated automation Explainable end-to-end systems Learn control not just prediction

Learning Control? Reinforcement Learning Meets Monte Carlo Tree Search and Deep Learning Hard coded control logic (not learned) Security: Agent can learn dynamic/evolving behavior of adversary DevOPs: Agent can learn workflow automation (e.g. Openstack Mistral) Orchestration: Agent can learn dynamic behavior of VNFs/system Deep policy net, 𝜋 𝑠 =𝑎, s∈𝑆, 𝑎∈𝐴 𝑠 , can capture human intuition http://www.nature.com/nature/journal/v529/n7587/full/nature16961.html

Static vs. Reinforcement Learning Architectures Today’s Static ML Architectures ML doesn’t have “agency” Hard-coded or open loop control Learns prediction Doesn’t learn control Assumes stationary DGD Largely off-line Reinforcement Learning Architecture Agent architecture Agent learns control/action selection Adapts to evolving environment Non-stationary distributions Network gamification

Summary Lots of Network Data Standardized and labeled datasets still scarce However, most network data sources (e.g., netflow) not designed for ML Arbitrary data might be over-valued Lots of open source ML frameworks, Cloud APIs, Examples, … Google -- Tensorflow (tensorflow.org) Facebook -- Torch (torch.ch) Microsoft -- CNTK (https://github.com/Microsoft/CNTK) Amazon -- MXNET (https://aws.amazon.com/mxnet) Other popular frameworks Keras (https://keras.io/) Theano (https://github.com/Theano) … However, networking industry still dominated by MLwashing, platforms, clustering, … Skills gap persists and it still requires skill/experience to Build DNN architectures/models Find ”good” settings for hyper-parameters Prevent overfitting But again, be careful: SOTA LSTMs+RLs are starting to be able to build neural networks https://openreview.net/pdf?id=r1Ue8Hcxg, http://papers.nips.cc/paper/6461-learning-to-learn-by-gradient-descent-by-gradient-descent.pdf, … All of this said, you will be seeing ML in all facets of networking And everything else for that matter

So Call To Action Where Do We Need To Focus? Find a Useful Theory of Networking As opposed to ad-hoc approaches Again, consider the success of convolutional neural networks What is the “interlingua” for networking? Public Data Sets Skill Sets State of the art machine learning algorithms ML platforms and associated automation Explainable end-to-end systems Learn control not just prediction Reinforcement Learning Evolution Strategies (https://blog.openai.com/evolution-strategies) Others?

Finally…Many Beautiful Mysteries Remain Back-propagation Gradient-based optimization/back-propagation Why is such a simple algorithm so powerful? New optimizer/optimizee paradigms AlphaGo https://deepmind.com/research/alphago Adversarial Images/Generative Adversarial Nets (GANs) https://arxiv.org/abs/1412.6572 Learning to learn by gradient descent by gradient descent https://arxiv.org/abs/1606.04474 Neural Architecture Search With Reinforcement Learning https://openreview.net/pdf?id=r1Ue8Hcxg Neural Nets What are the units (artificial neurons) actually doing? https://arxiv.org/pdf/1509.06321.pdf Why does deep and cheap learning work so well? Physics perspective http://arxiv.org/pdf/1608.08225v1.pdf So how many 28x28 grayscale images are there? Say there are 8 bits of grayscale  256784 possible images Our autoencoder had 156800 parameters and 156800/256784 ≈0 So how can a simple autoencoder find the MNIST subspace?