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In an effort to better understand the different ways in which the discount factor affects the optimization process in reinforcement learning, we designed a set of experiments to study each effect in isolation. Our analysis reveals that the common perception that poor performance of low discount factors is caused by (too) small action-gaps requires revision. We propose an alternative hypothesis, which identifies the size-difference of the action-gap across the state-space as the primary cause. We then introduce a new method that enables more homogeneous action-gaps by mapping value estimates to a logarithmic space. We prove convergence for this method under standard assumptions and demonstrate empirically that it indeed enables lower discount factors for approximate reinforcement-learning methods. This in turn allows tackling a class of reinforcement-learning problems that are challenging to solve with traditional methods.

Dance is an art and when technology meets this kind of art, it's a novel attempt in itself. Several researchers have attempted to automate several aspects of dance, right from dance notation to choreography. Furthermore, we have encountered several applications of dance automation like e-learning, heritage preservation, etc. Despite several attempts by researchers for more than two decades in various styles of dance all round the world, we found a review paper that portrays the research status in this area dating to 1990 \cite{politis1990computers}. Hence, we decide to come up with a comprehensive review article that showcases several aspects of dance automation. This paper is an attempt to review research work reported in the literature, categorize and group all research work completed so far in the field of automating dance. We have explicitly identified six major categories corresponding to the use of computers in dance automation namely dance representation, dance capturing, dance semantics, dance generation, dance processing approaches and applications of dance automation systems. We classified several research papers under these categories according to their research approach and functionality. With the help of proposed categories and subcategories one can easily determine the state of research and the new avenues left for exploration in the field of dance automation.

Artificial neural networks suffer from catastrophic forgetting when they are sequentially trained on multiple tasks. To overcome this problem, we present a novel approach based on task-conditioned hypernetworks, i.e., networks that generate the weights of a target model based on task identity. Continual learning (CL) is less difficult for this class of models thanks to a simple key observation: instead of relying on recalling the input-output relations of all previously seen data, task-conditioned hypernetworks only require rehearsing previous weight realizations, which can be maintained in memory using a simple regularizer. Besides achieving good performance on standard CL benchmarks, additional experiments on long task sequences reveal that task-conditioned hypernetworks display an unprecedented capacity to retain previous memories. Notably, such long memory lifetimes are achieved in a compressive regime, when the number of trainable weights is comparable or smaller than target network size. We provide insight into the structure of low-dimensional task embedding spaces (the input space of the hypernetwork) and show that task-conditioned hypernetworks demonstrate transfer learning properties. Finally, forward information transfer is further supported by empirical results on a challenging CL benchmark based on the CIFAR-10/100 image datasets.

We introduce a lifelong language learning setup where a model needs to learn from a stream of text examples without any dataset identifier. We propose an episodic memory model that performs sparse experience replay and local adaptation to mitigate catastrophic forgetting in this setup. Experiments on text classification and question answering demonstrate the complementary benefits of sparse experience replay and local adaptation to allow the model to continuously learn from new datasets. We also show that the space complexity of the episodic memory module can be reduced significantly ( 50-90%) by randomly choosing which examples to store in memory with a minimal decrease in performance. We consider an episodic memory component as a crucial building block of general linguistic intelligence and see our model as a first step in that direction.

Yan Shi, Dezhi Feng, and Subir Biswas Electrical and Computer Engineering, Michigan State University, East Lansing, MI Abstract: This paper presents a deep-learning based traffic might not scale well and need updates to work under the new classification method for identifying multiple streaming video traffic conditions. Growth in video streaming traffic is arguably sources at the same time within an encrypted tunnel. The work the most significant recent change in network traffic, yet there defines a novel feature inspired by Natural Language are only a limited number of researches targeting video Processing (NLP) that allows existing NLP techniques to help streaming protocols [7]-[9]. The feature extraction method is (where multiple types of network traffic occur at the same time) described, and a large dataset containing video streaming and is left out of the existing research as well but happens quite often web traffic is created to verify its effectiveness. Results are in real-world situations. The targeted traffic type needs to be obtained by applying several NLP methods to show that the extended to cover these changes. We also show the ability to learning using deep learning methods. The trend has prompted achieve zero-shot learning with the proposed method.

The Mallows model, introduced in the seminal paper of Mallows 1957, is one of the most fundamental ranking distribution over the symmetric group $S_m$. To analyze more complex ranking data, several studies considered the Generalized Mallows model defined by Fligner and Verducci 1986. Despite the significant research interest of ranking distributions, the exact sample complexity of estimating the parameters of a Mallows and a Generalized Mallows Model is not well-understood. The main result of the paper is a tight sample complexity bound for learning Mallows and Generalized Mallows Model. We approach the learning problem by analyzing a more general model which interpolates between the single parameter Mallows Model and the $m$ parameter Mallows model. We call our model Mallows Block Model -- referring to the Block Models that are a popular model in theoretical statistics. Our sample complexity analysis gives tight bound for learning the Mallows Block Model for any number of blocks. We provide essentially matching lower bounds for our sample complexity results. As a corollary of our analysis, it turns out that, if the central ranking is known, one single sample from the Mallows Block Model is sufficient to estimate the spread parameters with error that goes to zero as the size of the permutations goes to infinity. In addition, we calculate the exact rate of the parameter estimation error.

This blog post contains all my learnings from Google's Laurence Moroney's nice Coursera course named Introduction to TensorFlow for Artificial Intelligence, Machine Learning and Deep Learning. It's a great news that Google developers have released the alpha version of TensorFlow 2.0 (at the time of writing this post) which now focuses more on usability, clarity and flexibility just like Keras. What this means is that you can now use Keras inside TensorFlow itself in addition to all those advanced functions that TensorFlow offers. Furthermore, 2.0 has eager execution enabled by default which means you no longer need to create a session and run the computational graph inside that. Everything is dynamic just like PyTorch now.

Artificial Intelligence in education seems to have a bright future. It is because of the helpful nature of AI technology, which also helps us take perfect pictures, automatically park cars, and so on. AI is moving towards becoming a soothing and helpful non-human companion for us. AI startup funding by venture capitalists has skyrocketed six times since 2000, according to Adobe. Artificial Intelligence is considered as the most crucial element required to build digital transformation solutions for the future.

Besides the benefits for the community of people with cognitive disabilities, it can also become a useful educational tool in the foreign language classroom, where students with a limited knowledge of a target language can rely on it to adapt complex literary works.