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Forwarded from Science in telegram
How Gödel’s Proof Works

His incompleteness theorems destroyed the search for a mathematical theory of everything. Nearly a century later, we’re still coming to grips with the consequences.

Every mathematical system will have some statements that can never be proved.

Read article here
Forwarded from Machinelearning
DeText: A Deep Neural Text Understanding Framework

DeText can be applied to many tasks, including search & recommendation ranking, multi-class classification and query understanding tasks.

Github: https://github.com/linkedin/detext

Paper: https://arxiv.org/abs/2008.02460v1

@ai_machinelearning_big_data
Forwarded from Graph Machine Learning
DeepMind's Traffic Prediction with Advanced Graph Neural Networks

A new blog post by DeepMind has been released recently that describes how you can apply GNN for travel time predictions. There are not many details about the model itself (which makes me wonder if deep net trained across all supersegments would suffice), but there are curious details about training.

1. As the road network is huge I suppose, they use sampling sampling of subgraphs in proportion to traffic density. This should be similar to GraphSAGE-like approaches.

2. Sampled subgraphs can vary a lot in a single batch. So they use RL to select subgraph properly. I guess it's some form of imitation learning that selects graphs in a batch based on some objective value.

3. They use MetaGradients algorithm to select a learning rate, which was previously used to parametrize returns in RL. I guess it parametrizes learning rate instead in this blog post.
https://dafriedman97.github.io/mlbook/content/table_of_contents.html

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