Data Science by ODS.ai 🦜
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First Telegram Data Science channel. Covering all technical and popular staff about anything related to Data Science: AI, Big Data, Machine Learning, Statistics, general Math and the applications of former. To reach editors contact: @haarrp
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+22 responses 💪 !

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30% of audience are in GMT+3 for now.

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Microsoft Research 2019 reflection—a year of progress on technology’s toughest challenges

Highlights:

* MT-DNN — a model for learning universal language embeddings that combines the multi-task learning and the language model pre-training of BERT.
* Guidelines for human-AI interaction design
* AirSim, coming from strong MS background with flight simulations, for AI realisting testing environment.
* Sand Dance, a data visualization tool included in Visual Studio Code
* Icecaps — a toolkit for conversation modeling

Link: https://www.microsoft.com/en-us/research/blog/microsoft-research-2019-reflection-a-year-of-progress-on-technologys-toughest-challenges/

#microsoft #yearinreview
​​Top Trends of Graph Machine Learning in 2020

In this blogpost the author shares an overview of ICLR 2020 papers on Graph Machine Learning and highlights several trends:

1. More solid theoretical understanding of GNN:
* the dimension of the node embeddings should be proportional to the size of the graph if we want GNN being able to compute a solution to popular graph problems
* under certain conditions on the weights, GCNs cannot learn anything except node degrees and connected components when the number of layers grows
* a certain readout operation after neighborhood aggregation could help capture different types of node classification

2. New cool applications of GNN:
* a way to detect and fix bugs simultaneously in Javascript code
* inferring the types of variables for languages like Python or TypeScript
* reasoning in IQ-like tests (Raven Progressive Matrices (RPM) and Diagram Syllogism (DS)) with GNNs
* an RL algorithm to optimize the cost of TensorFlow computation graphs

3. Knowledge graphs become more popular:
* an idea to embed a query into a latent space not as a single point, but as a rectangular box
* a way to work with numerical entities and rules
* the re-evaluation of the existing models and how do they perform in a fair environment

4. New frameworks for graph embeddings:
* a way to improve running time and accuracy in node classification problem for any unsupervised embedding method
* a simple baseline that does not utilize a topology of the graph (i.e. it works on the aggregated node features) performs on par with the SOTA GNNs

blog post:
https://towardsdatascience.com/top-trends-of-graph-machine-learning-in-2020-1194175351a3

#ICLR #gnn #graphs
​​First movie ever upscaled and enhanced by couple of neural networks

Arrival of a Train at La Ciotat upscaled and upscaled to 4K 60 FPS

Algorithms that were used:
* Gigapixel AI by Topaz Labs for upscale
* FPS enhancement — Dain

Author on YouTube promises to experiment on the colorization and to release the update later.

YouTube: https://m.youtube.com/watch?v=3RYNThid23g
Author’s channel (in Russian): @denissexy

#upscale #dl #videoprocessing
​​Using ‘radioactive data’ to detect if a data set was used for training

The authors have developed a new technique to mark the images in a data set so that researchers can determine whether a particular machine learning model has been trained using those images. This can help researchers and engineers to keep track of which data set was used to train a model so they can better understand how various data sets affect the performance of different neural networks.

The key points:
- the marks are harmless and have no impact on the classification accuracy of models, but are detectable with high confidence in a neural network;
- the image features are moved in a particular direction (the carrier) that has been sampled randomly and independently of the data
- after a model is trained on such data, its classifier will align with the direction of the carrier
- the method works in such a way that it is difficult to detect whether a data set is radioactive and to remove the marks from the trained model.

blogpost: https://ai.facebook.com/blog/using-radioactive-data-to-detect-if-a-data-set-was-used-for-training/
paper: https://arxiv.org/abs/2002.00937

#cv #cnn #datavalidation #image #data
ODS breakfast in Paris! ☕️ 🇫🇷 See you this Saturday at 10:30 (some people come around 11:00) at Malongo Café, 50 Rue Saint-André des Arts. We are expecting from 9 to 19 people. Tableoverflow 💥 is possible.
​​REST: Robust and Efficient Neural Networks for Sleep Monitoring in the Wild

New approach for sleep monitoring.

Nowadays a lot of people suffer from sleep disorders thataffects their daily functioning, long-term health and longevity. Thelong-term effects of sleep deprivation and sleep disorders includean increased risk of hypertension, diabetes, obesity, depression, heart attack, and stroke. As a result sleep monitoring is a very important topic.
Currently automatical documentation of sleep stages isn't robust against noises (which can be introduced by electrical interferences (e.g., power-line) and user motions (e.g., muscle contraction, respiration)) and isn't computationaly efficient enough for fast calculations on user devices.

The authors offer the following improvenents:
- adversarial training and spectral regularization to improve robustness to noise
- sparsity regularization to improve energy and computational efficiency

Rest models achieves a macro-F1 score of 0.67 vs. 0.39 for the state-of-the-art model in the presence of Gaussian noise, with 19×parameter and 15×MFLOPS reduction.
The model is also deployed onto a Pixel 2 smartphone. It achieves 17x energy reduction and 9x faster inference compared to uncompressed models.

Paper: https://arxiv.org/abs/2001.11363
Code: https://github.com/duggalrahul/REST


#deeplearning #compression #adversarial #sleepstaging
​​📹How Tesla self-driving AI sees the world

#Tesla #selfdriving #cv #dl #video #Autonomous #video
Please vote in our Mega Imprtant Audience Research!

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​​CCMatrix: A billion-scale bitext data set for training translation models

The authors show that margin-based bitext mining in LASER's multilingual sentence space can be applied to monolingual corpora of billions of sentences.

They are using 10 snapshots of a curated common crawl corpus CCNet totaling 32.7 billion unique sentences. Using one unified approach for 38 languages, they were able to mine 3.5 billion parallel sentences, out of which 661 million are aligned with English. 17 language pairs have more than 30 million parallel sentences, 82 more than 10 million, and most more than one million, including direct alignments between many European or Asian languages.

They train NMT systems for most of the language pairs and evaluate them on TED, WMT and WAT test sets. Also, they achieve a new SOTA for a single system on the WMT'19 test set for translation between English and German, Russian and Chinese, as well as German/French.

But, they will soon provide a script to extract the parallel data from this corpus

blog post: https://ai.facebook.com/blog/ccmatrix-a-billion-scale-bitext-data-set-for-training-translation-models/
paper: https://arxiv.org/abs/1911.04944.pdf
github: https://github.com/facebookresearch/LASER/tree/master/tasks/CCMatrix

#nlp #multilingual #laser #data #monolingual
​​TyDi QA: A Multilingual Question Answering Benchmark

it's a q&a corpus covering 11 Typologically Diverse languages: russian, english, arabic, bengali, finnish, indonesian, japanese, kiswahili, korean, telugu, thai.

the authors collected questions from people who wanted an answer but did not know the answer yet.
they showed people an interesting passage from Wikipedia written in their native language and then had them ask a question, any question, as long as it was not answered by the passage and they actually wanted to know the answer.

blog post: https://ai.googleblog.com/2020/02/tydi-qa-multilingual-question-answering.html?m=1
paper: only pdf

#nlp #qa #multilingual #data
​​DEEP DOUBLE DESCENT
where bigger models and more data hurt

it's really cool & interesting research about where we watch that the performance first improves, then gets worse, and then improves again with increasing model size, data size, or training time. but this effect is often avoided through careful regularization.

some conclusions from research:
– there is a regime where bigger models are worse
– there is a regime where more samples hurt
– there is a regime where training longer reverses overfitting

blog post: https://openai.com/blog/deep-double-descent/
paper: https://arxiv.org/abs/1912.02292

#deep #train #size #openai
Data Science by ODS.ai 🦜
🔝Great OpenDataScience Channel Audience Research The first audience research was done on 25.06.18 and it is time to update our knowledge on what are we. Please fill in this form: https://forms.gle/GGNgukYNQbAZPtmk8 all the collected data will be used to…
☺️526 responses collected thanks to you!

Now we are looking for a volunteer to perform an #exploratory analysis of responses an publish it as a an example on github in a form of #jupyter notebook. If you are familiar with git, jupyter, basics of #exploratory analysis and want to help, write to @opendatasciencebot bot (make sure you include your username, so we can reach you back).

In the mean time, please spend some free weekend time to fill in the questionnaire form if you haven’t filled it yet: https://forms.gle/GGNgukYNQbAZPtmk8 This will help us to make channel better for you.

2020 questionnaire link: https://forms.gle/GGNgukYNQbAZPtmk8
​​Three challenges of Deep Learning according to Yann LeCun
​​Few-shot Video-to-Video Synthesis

it's the pytorch implementation for few-shot photorealistic video-to-video (vid2vid) translation.
it can be used for generating human motions from poses, synthesizing people talking from edge maps, or turning semantic label maps into photo-realistic videos.
the core of vid2vid translation is image-to-image translation.

blog post: https://nvlabs.github.io/few-shot-vid2vid/
paper: https://arxiv.org/abs/1910.12713
youtube: https://youtu.be/8AZBuyEuDqc
github: https://github.com/NVlabs/few-shot-vid2vid

#cv #nips #neurIPS #pattern #recognition #vid2vid #synthesis
Data Science by ODS.ai 🦜
​​Three challenges of Deep Learning according to Yann LeCun
Yann LeCun's talk slides and video

Slides: https://drive.google.com/file/d/1r-mDL4IX_hzZLDBKp8_e8VZqD7fOzBkF/view

Video of the talks: https://vimeo.com/390347111
- 1:10 in for Geoff Hinton's keynote,
- 1:44 for Yann LeCunn's,
- 2:18 for Yoshua Bengio's,
- 2:51 for the panel discussion moderated by Leslie Pack Kaelbling

#talk #meta #master