A Deep Learning Library for Video Understanding Research: PyTorchVideo

A deep learning library for video understanding research.

Check the website for more information.

A PyTorchVideo-accelerated X3D model running on a Samsung Galaxy S10 phone. The model runs ~8x faster than real time, requiring roughly 130 ms to process one second of video.

A PyTorchVideo-based SlowFast model performing video action detection.

Introduction

PyTorchVideo is a deeplearning library with a focus on video understanding work. PytorchVideo provides resusable, modular and efficient components needed to accelerate the video understanding research. PyTorchVideo is developed using PyTorch and supports different deeplearning video components like video models, video datasets, and video-specific transforms.

Key features include:

Based on PyTorch: Built using PyTorch. Makes it easy to use all of the PyTorch-ecosystem components.
Reproducible Model Zoo: Variety of state of the art pretrained video models and their associated benchmarks that are ready to use. Complementing the model zoo, PyTorchVideo comes with extensive data loaders supporting different datasets.
Efficient Video Components: Video-focused fast and efficient components that are easy to use. Supports accelerated inference on hardware.

Installation

Install PyTorchVideo inside a conda environment(Python >=3.7) with

pip install pytorchvideo

For detailed instructions please refer to INSTALL.md.

Tutorials

Get started with PyTorchVideo by trying out one of our tutorials or by running examples in the tutorials folder.

Model Zoo and Baselines

We provide a large set of baseline results and trained models available for download in the PyTorchVideo Model Zoo.

Contributors

Here is the growing list of PyTorchVideo contributors in alphabetical order (let us know if you would like to be added): Aaron Adcock, Amy Bearman, Bernard Nguyen, Bo Xiong, Chengyuan Yan, Christoph Feichtenhofer, Dave Schnizlein, Haoqi Fan, Heng Wang, Jackson Hamburger, Jitendra Malik, Kalyan Vasudev Alwala, Matt Feiszli, Nikhila Ravi, Ross Girshick, Tullie Murrell, Wan-Yen Lo, Weiyao Wang, Yanghao Li, Yilei Li, Zhengxing Chen, Zhicheng Yan.

Development

We welcome new contributions to PyTorchVideo and we will be actively maintaining this library! Please refer to CONTRIBUTING.md for full instructions on how to run the code, tests and linter, and submit your pull requests.

Download Details:

Author: facebookresearch
The Demo/Documentation: View The Demo/Documentation
Download Link: Download The Source Code
Official Website: https://github.com/facebookresearch/pytorchvideo
License: PyTorchVideo is released under the Apache 2.0 License.

#pytorchvideo #deep-learning #pytorch #diveo #facebook

What is GEEK

Buddha Community

A Deep Learning Library for Video Understanding Research: PyTorchVideo

INEXTURE Solutions LLP

1618317562

Top Deep Learning Development Services | Hire Deep Learning Developer

View more: https://www.inexture.com/services/deep-learning-development/

We at Inexture, strategically work on every project we are associated with. We propose a robust set of AI, ML, and DL consulting services. Our virtuoso team of data scientists and developers meticulously work on every project and add a personalized touch to it. Because we keep our clientele aware of everything being done associated with their project so there’s a sense of transparency being maintained. Leverage our services for your next AI project for end-to-end optimum services.

#deep learning development #deep learning framework #deep learning expert #deep learning ai #deep learning services

Mikel Okuneva

1603735200

Top 10 Deep Learning Sessions To Look Forward To At DVDC 2020

The Deep Learning DevCon 2020, DLDC 2020, has exciting talks and sessions around the latest developments in the field of deep learning, that will not only be interesting for professionals of this field but also for the enthusiasts who are willing to make a career in the field of deep learning. The two-day conference scheduled for 29th and 30th October will host paper presentations, tech talks, workshops that will uncover some interesting developments as well as the latest research and advancement of this area. Further to this, with deep learning gaining massive traction, this conference will highlight some fascinating use cases across the world.

Here are ten interesting talks and sessions of DLDC 2020 that one should definitely attend:

Also Read: Why Deep Learning DevCon Comes At The Right Time

Adversarial Robustness in Deep Learning

By Dipanjan Sarkar

**About: **Adversarial Robustness in Deep Learning is a session presented by Dipanjan Sarkar, a Data Science Lead at Applied Materials, as well as a Google Developer Expert in Machine Learning. In this session, he will focus on the adversarial robustness in the field of deep learning, where he talks about its importance, different types of adversarial attacks, and will showcase some ways to train the neural networks with adversarial realisation. Considering abstract deep learning has brought us tremendous achievements in the fields of computer vision and natural language processing, this talk will be really interesting for people working in this area. With this session, the attendees will have a comprehensive understanding of adversarial perturbations in the field of deep learning and ways to deal with them with common recipes.

Read an interview with Dipanjan Sarkar.

Imbalance Handling with Combination of Deep Variational Autoencoder and NEATER

By Divye Singh

**About: **Imbalance Handling with Combination of Deep Variational Autoencoder and NEATER is a paper presentation by Divye Singh, who has a masters in technology degree in Mathematical Modeling and Simulation and has the interest to research in the field of artificial intelligence, learning-based systems, machine learning, etc. In this paper presentation, he will talk about the common problem of class imbalance in medical diagnosis and anomaly detection, and how the problem can be solved with a deep learning framework. The talk focuses on the paper, where he has proposed a synergistic over-sampling method generating informative synthetic minority class data by filtering the noise from the over-sampled examples. Further, he will also showcase the experimental results on several real-life imbalanced datasets to prove the effectiveness of the proposed method for binary classification problems.

Default Rate Prediction Models for Self-Employment in Korea using Ridge, Random Forest & Deep Neural Network

By Dongsuk Hong

About: This is a paper presentation given by Dongsuk Hong, who is a PhD in Computer Science, and works in the big data centre of Korea Credit Information Services. This talk will introduce the attendees with machine learning and deep learning models for predicting self-employment default rates using credit information. He will talk about the study, where the DNN model is implemented for two purposes — a sub-model for the selection of credit information variables; and works for cascading to the final model that predicts default rates. Hong’s main research area is data analysis of credit information, where she is particularly interested in evaluating the performance of prediction models based on machine learning and deep learning. This talk will be interesting for the deep learning practitioners who are willing to make a career in this field.

#opinions #attend dldc 2020 #deep learning #deep learning sessions #deep learning talks #dldc 2020 #top deep learning sessions at dldc 2020 #top deep learning talks at dldc 2020

Tia Gottlieb

1595356740

Converting deep learning research papers to useful code

If deep learning is a super power, then turning theories from a paper to usable code is a hyper power

Image for post

Why should I learn to implement machine learning research papers?

As I’ve said, being able to convert a paper to code is definitely a hyper power, especially in a field like machine learning which is moving faster and faster each day.

Most research papers come from people within giant tech companies or universities who may be PhD holders or the ones who are working on the cutting edge technologies.

What else can be more cool than being able to reproduce the research done by these top notch professionals. Another thing to note is that the ones who can reproduce research papers as code is in huge demand.

Once you get the knack of implementing research papers, you will be in a state on par with these researchers.

These researchers too has acquired these skills through the practice of reading and implementing research papers.

How do I read and implement papers?

You might say, “Hm, I have a general understanding of the deep learning algorithms like fully connected networks, convolutional neural networks, recurrent neural networks, but the problem is that I would like to develop SOTA(state of the art) voice cloning AI but I know nothing about voice cloning :( ”.

Okay, here is your answer(some parts of my method is taken from Andrew Ng’s advice on reading papers).

If you want to learn about a specific topic:

Collect 5–6 papers related to the specific topic(you can simply search arxiv or similar websites to get papers related to a topic).
Don’t read a single paper completely, instead skim through all of the papers and pick a paper that interests you or if you had a specific paper in mind, go pick it up, no one can stop you.
Read the abstract carefully and understand the idea from a high level and see whether your interest still persists, if so continue to skim through the images and see whether you can make assumptions on what the paper might be about.
Now read the introduction carefully line by line because most of what the paper contains will be explained here in the most simplest manner with minimal math.
If you wish, you can skip the math equations in the first pass, don’t skip the math if the Greek letters are familiar.
At any situation, if you get stuck or some words are confusing, never hesitate to google it. No one is born as master of everything ;)
After completing the first pass, you will be in a state where you understand the high level view of what the paper is trying prove or improve.
In the second pass, try to understand almost everything in the paper and if you encounter any pseudo-code, try to convert it into your python library of choice(PyTorch, TensorFlow…)
You can get more papers to read and get a better understanding of the field by going to the references section of each paper(same as connecting the dots).

💡 Some tips for effectively understanding a paper:

If you are a beginner to reading research papers, it’s good to read some blog posts and videos related to that topic/research paper before reading the paper itself. This makes your job easier and you will not be discouraged by all that Greek letters.
Always take notes and highlight important points in the research paper for easier reference while implementing the code for the paper.
If you are new to implementing research papers and get stuck any where, it’s not a bad idea to go through open source implementations and see how others have done this.

#deep-learning #research #unsupervised-learning #machine-learning #deep learning

Tia Gottlieb

1595573880

Deep Reinforcement Learning for Video Games Made Easy

In this post, we will investigate how easily we can train a Deep Q-Network (DQN) agent (Mnih et al., 2015) for Atari 2600 games using the Google reinforcement learning library Dopamine. While many RL libraries exist, this library is specifically designed with four essential features in mind:

Easy experimentation
Flexible development
Compact and reliable
Reproducible

_We believe these principles makes __Dopamine _one of the best RL learning environment available today. Additionally, we even got the library to work on Windows, which we think is quite a feat!

In my view, the visualization of any trained RL agent is an absolute must in reinforcement learning! Therefore, we will (of course) include this for our own trained agent at the very end!

We will go through all the pieces of code required (which is** minimal compared to other libraries**), but you can also find all scripts needed in the following Github repo.

1. Brief Introduction to Reinforcement Learning and Deep Q-Learning

The general premise of deep reinforcement learning is to

“derive efficient representations of the environment from high-dimensional sensory inputs, and use these to generalize past experience to new situations.”

Mnih et al. (2015)

As stated earlier, we will implement the DQN model by Deepmind, which only uses raw pixels and game score as input. The raw pixels are processed using convolutional neural networks similar to image classification. The primary difference lies in the objective function, which for the DQN agent is called the optimal action-value function

Image for post

where_ rₜ is the maximum sum of rewards at time t discounted by γ, obtained using a behavior policy π = P(a_∣_s)_ for each observation-action pair.

There are relatively many details to Deep Q-Learning, such as Experience Replay (Lin, 1993) and an _iterative update rule. _Thus, we refer the reader to the original paper for an excellent walk-through of the mathematical details.

One key benefit of DQN compared to previous approaches at the time (2015) was the ability to outperform existing methods for Atari 2600 games using the same set of hyperparameters and only pixel values and game score as input, clearly a tremendous achievement.

2. Installation

This post does not include instructions for installing Tensorflow, but we do want to stress that you can use both the CPU and GPU versions.

Nevertheless, assuming you are using Python 3.7.x, these are the libraries you need to install (which can all be installed via pip):

tensorflow-gpu=1.15   (or tensorflow==1.15  for CPU version)
cmake
dopamine-rl
atari-py
matplotlib
pygame
seaborn
pandas

#reinforcement-learning #q-learning #games #machine-learning #deep-learning #deep learning

Fredy Larson

1621668600