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Difference between training and test data distribution

#artificialintelligence

I think you're confusing the underlying distribution from which both training and test distributions are drawn, with the distributions of the specific train and test draws. Unless the underlying distribution is eg time-sensitive, changed during the time between eg drawing the training and the testing samples, the underlying distribution is identical each time. The goal in learning a machine learning model is typically not to learn the training distribution, but to learn the latent underlying distribution, of which the training distribution is only a sample. Of course, you cannot actually see the underlying distribution, but eg, if you only really cared about learning the training samples, you could simply memorize the training samples in a lookup table, end of story. In reality, you are using the training sample as a proxy into the underlying distribution.


Most Advanced Machine learning Training Bootcamp - Tonex Training

#artificialintelligence

Length: 3 days Machine Learning training bootcamp is a 3-day technical and most advanced, time being training course by Tonex that covers the fundamentals of machine learning. This is a course for Data Scientists learning about complex theory, algorithms and coding libraries in a practical way with custom examples. Machine learning computerizes the data investigation process by empowering PCs, machines and IoT to learn and adjust through experience applied to explicit undertakings without express programming. Participants learn, appreciate and ace thoughts on machine learning ideas, key standards, and methods including regulated and unaided learning, scientific and heuristic angles, demonstrating to create calculations, expectation, straight relapse, grouping, arrangement, and forecast. Learning Objectives: Subsequent to finishing this course, the members will: Find out about Artificial Intelligence (AI), Machine Learning (ML) and Deep Learning (DL) Rundown similitudes and contrasts between AI, Machine Learning and Data Mining Figure out how Artificial Intelligence utilizes data to offer answers for existing issues Investigate how Machine Learning goes past AI to offer data vital for a machine to learn, adjust and upgrade Explain how Data Mining can fill in as establishment for AI and machine learning to utilize existing data to feature designs Rundown the different utilizations of machine learning and related calculations More Course Agenda and Topics: The Basics of Machine Learning Machine Learning Techniques, Tools and Algorithms Data and Data Science Review of Terminology and Principles Applied Artificial Intelligence (AI) and Machine Learning Popular Machine Learning Methods Learning Applied to Machine Learning Principal Component Analysis Principles of Supervised Machine Learning Algorithms Principles of Unsupervised Machine Learning Regression Applied to Machines Learning Principles of Neural Networks Large Scale Machine Learning Hands-on Activities More.


Deep Q-learning from Demonstrations

arXiv.org Artificial Intelligence

Deep reinforcement learning (RL) has achieved several high profile successes in difficult decision-making problems. However, these algorithms typically require a huge amount of data before they reach reasonable performance. In fact, their performance during learning can be extremely poor. This may be acceptable for a simulator, but it severely limits the applicability of deep RL to many real-world tasks, where the agent must learn in the real environment. In this paper we study a setting where the agent may access data from previous control of the system. We present an algorithm, Deep Q-learning from Demonstrations (DQfD), that leverages small sets of demonstration data to massively accelerate the learning process even from relatively small amounts of demonstration data and is able to automatically assess the necessary ratio of demonstration data while learning thanks to a prioritized replay mechanism. DQfD works by combining temporal difference updates with supervised classification of the demonstrator's actions. We show that DQfD has better initial performance than Prioritized Dueling Double Deep Q-Networks (PDD DQN) as it starts with better scores on the first million steps on 41 of 42 games and on average it takes PDD DQN 83 million steps to catch up to DQfD's performance. DQfD learns to out-perform the best demonstration given in 14 of 42 games. In addition, DQfD leverages human demonstrations to achieve state-of-the-art results for 11 games. Finally, we show that DQfD performs better than three related algorithms for incorporating demonstration data into DQN.


Data Scientist Masters Program Edureka

@machinelearnbot

Edureka's Masters Program is a thoughtful compilation of Instructor -Led and Self Paced Courses, allowing the learners to be guided by industry experts, as well as learn skills at their own pace. In the Data Science Masters Program, Data Science Certification Course using R, Python Certification Training for Data Science, Apache Spark and Scala Certification Training, AI & Deep Learning with TensorFlow, Tableau Training & Certification are Instructor - led Online Courses.


Altitude Training: Strong Bounds for Single-Layer Dropout

Neural Information Processing Systems

Dropout training, originally designed for deep neural networks, has been successful on high-dimensional single-layer natural language tasks. This paper proposes a theoretical explanation for this phenomenon: we show that, under a generative Poisson topic model with long documents, dropout training improves the exponent in the generalization bound for empirical risk minimization. Dropout achieves this gain much like a marathon runner who practices at altitude: once a classifier learns to perform reasonably well on training examples that have been artificially corrupted by dropout, it will do very well on the uncorrupted test set. We also show that, under similar conditions, dropout preserves the Bayes decision boundary and should therefore induce minimal bias in high dimensions. Papers published at the Neural Information Processing Systems Conference.