Instructional Material
Efficient Robotic Manipulation Through Offline-to-Online Reinforcement Learning and Goal-Aware State Information
Li, Jin, Zhan, Xianyuan, Xiao, Zixu, Zhou, Guyue
End-to-end learning robotic manipulation with high data efficiency is one of the key challenges in robotics. The latest methods that utilize human demonstration data and unsupervised representation learning has proven to be a promising direction to improve RL learning efficiency. The use of demonstration data also allows "warming-up" the RL policies using offline data with imitation learning or the recently emerged offline reinforcement learning algorithms. However, existing works often treat offline policy learning and online exploration as two separate processes, which are often accompanied by severe performance drop during the offline-to-online transition. Furthermore, many robotic manipulation tasks involve complex sub-task structures, which are very challenging to be solved in RL with sparse reward. In this work, we propose a unified offline-to-online RL framework that resolves the transition performance drop issue. Additionally, we introduce goal-aware state information to the RL agent, which can greatly reduce task complexity and accelerate policy learning. Combined with an advanced unsupervised representation learning module, our framework achieves great training efficiency and performance compared with the state-of-the-art methods in multiple robotic manipulation tasks.
Tidy Time Series Forecasting in R with Spark
I'm SUPER EXCITED to show fellow time-series enthusiasts a new way that we can scale time series analysis using an amazing technology called Spark! Without Spark, large-scale forecasting projects of 10,000 time series can take days to run because of long-running for-loops and the need to test many models on each time series. Spark has been widely accepted as a "big data" solution, and we'll use it to scale-out (distribute) our time series analysis to Spark Clusters, and run our analysis in parallel. Spark is an amazing technology for processing large-scale data science workloads. Modeltime is a state-of-the-art forecasting library that I personally developed for "Tidy Forecasting" in R. Modeltime now integrates a Spark Backend with capability of forecasting 10,000 time series using distributed Spark Clusters.
10 Best Machine Learning Online Courses & Certifications You Must Know in 2021
The machine learning field is quite interesting and is constantly evolving. In the modern world, you will find its application in every aspect of your lives starting from Facebook feed to Google Maps for navigation and so on. It is a subfield of artificial intelligence and involves learning computer algorithms that improve automatically through experience. Its demand is gradually rising because it can make high-value predictions to guide better decisions and smart actions in real-time without human intervention. So, to benefit our readers, we have created a comprehensive list of the best online machine learning courses and certifications from the leading educational platforms and renowned universities.
Data will control the twenty-first century.
Data will control the twenty-first century. Every company, big or small, is attempting to use data to their advantage. Data-driven insights could aid businesses in transforming and targeting new markets, addressing customer pain points, increasing revenue, and more. As a result, a growing number of companies are concentrating on data collecting, interpretation, and application. of India sees significant digitisation of its industries and services, making it the second-largest data science hub. Analysts estimate that by 2026, the country will have around 11 million job openings.
The Application of Artificial Intelligence in Foreign Language - Nerdynaut
The possibilities of artificial intelligence seem limitless. One of the most notable features of neural networks has been image manipulation. Restoring old photos or applying filters has been available for a long time. That's why artificial intelligence added to this process doesn't seem revolutionary. But creating images from scratch is a prime example of using technology.
Iterated Block Particle Filter for High-dimensional Parameter Learning: Beating the Curse of Dimensionality
Ning, Ning, Ionides, Edward L.
Parameter learning for high-dimensional, partially observed, and nonlinear stochastic processes is a methodological challenge. Spatiotemporal disease transmission systems provide examples of such processes giving rise to open inference problems. We propose the iterated block particle filter (IBPF) algorithm for learning high-dimensional parameters over graphical state space models with general state spaces, measures, transition densities and graph structure. Theoretical performance guarantees are obtained on beating the curse of dimensionality (COD), algorithm convergence, and likelihood maximization. Experiments on a highly nonlinear and non-Gaussian spatiotemporal model for measles transmission reveal that the iterated ensemble Kalman filter algorithm (Li et al. (2020)) is ineffective and the iterated filtering algorithm (Ionides et al. (2015)) suffers from the COD, while our IBPF algorithm beats COD consistently across various experiments with different metrics.
Algorithmic Trading A-Z with Python, Machine Learning & AWS
Algorithmic Trading A-Z with Python, Machine Learning & AWS - Build your own truly Data-driven Day Trading Bot Learn how to create, test, implement & automate unique Strategies. Preview this Course - GET COUPON CODE Welcome to the most comprehensive Algorithmic Trading Course. In this rigorous but yet practical Course, we will leave nothing to chance, hope, vagueness, or hocus-pocus! Did you know that 75% of retail Traders lose money with Day Trading? (some sources say 95%) For me as a Data Scientist and experienced Finance Professional this is not a surprise. Day Traders typically do not know/follow the five fundamental rules of (Day) Trading.
Machine Learning with Imbalanced Data
Machine Learning with Imbalanced Data - Learn multiple techniques to tackle data imbalance and improve the performance of your machine learning models. Preview this Course - GET COUPON CODE Welcome to Machine Learning with Imbalanced Datasets. In this course, you will learn multiple techniques which you can use with imbalanced datasets to improve the performance of your machine learning models. If you are working with imbalanced datasets right now and want to improve the performance of your models, or you simply want to learn more about how to tackle data imbalance, this course will show you how. We'll take you step-by-step through engaging video tutorials and teach you everything you need to know about working with imbalanced datasets.
Why NVIDIA GTC 2021 Is a Must-Attend AI Conference
More than a quarter of a million developers, researchers, innovators, and creators are gearing up for the long-awaited #1 AI conference – NVIDIA GTC which is kick-starting on November 8, 2021. The four-day virtual event will highlight some of the latest advancements in AI, deep learning, data science, high-performance computing (HPC), robotics, data science, networking, graphics and more. The Keynote by Jensen Huang, NVIDIA Founder, President and CEO, named as one of the world's most influential people of 2021, is expected to inspire and showcase the latest developments in AI, new solutions and latest products that will help solve the world's toughest challenges. Don't miss this Keynote, which will be live on November 9, at 1:30 PM IST GTC will provide a great opportunity for developers to learn the advancements in the latest technologies from the world's top innovators, scientists, and researchers. In addition, startups, academia, and the largest enterprises will all come together at GTC, giving participants a unique opportunity to share ideas and collaborate on creating the future.
Hyperparameter Optimization for Machine Learning
Hyperparameter tunning and why it matters Cross-validation and nested cross-validation Hyperparameter tunning with Grid and Random search Bayesian Optimisation Tree-Structured Parzen Estimators, Population Based Training and SMAC Hyperparameter tunning tools, i.e., Hyperopt, Optuna, Scikit-optimize, Keras Turner and others Welcome to Hyperparameter Optimization for Machine Learning. In this course, you will learn multiple techniques to select the best hyperparameters and improve the performance of your machine learning models. If you are regularly training machine learning models as a hobby or for your organization and want to improve the performance of your models, if you are keen to jump up in the leader board of a data science competition, or you simply want to learn more about how to tune hyperparameters of machine learning models, this course will show you how. We'll take you step-by-step through engaging video tutorials and teach you everything you need to know about hyperparameter tuning. Throughout this comprehensive course, we cover almost every available approach to optimize hyperparameters, discussing their rationale, their advantages and shortcomings, the considerations to have when using the technique and their implementation in Python.