Hoy traemos a este espacio el nuevo número de iJET International Journal of Emerging Technologies in Learning el último de 2017 Vol 12, No 12 (2017) Table of Contents Papers Application of Digital Music Technology in Music Pedagogy Peiwei Zhang, Xin Sui Music Solfeggio Learning Platform Construction and Application Qiao Zhou, Baihui Yan The Effects of the CALL Model on College English Reading Teaching Dan Zhang, Xiaoying Wang The Construction of Intelligent English Teaching Model Based on Artificial Intelligence Design and Implementation of English Reading Examination System Based on WEB Platform Lan Guo, Zhiyu Zhao, Lu Bai, Jing Lv, Xin Zhao On Spoken English Phoneme Evaluation Method Based on Sphinx-4 Computer System Computer Multimedia Assisted English Vocabulary Teaching Courseware Multi-Interactive Teaching Model of College English in Computer Information Technology Environment Design Flow of English Learning System Based on Item Response Theory Yuemei Liu, Xuetao Zhao Application of Kinect Technology in Blind Aerobics Learning Short Papers Discovery and Recommendation of First-Hand Learning Resources Based on Public Opinion Cluster Analysis Haiyun Li, Xuebo Zhang, Junhui Wang Evaluation of Sports Visualization Based on Wearable Devices Application of Data Mining in Library-Based Personalized Learning A Personalized Recommender System Based on Library Database Music Learning Based on Computer Software Baihui Yan, Qiao Zhou International Journal of Emerging Technologies in Learning.

Alex Irpan, a software engineer at Google, wrote an excellent article on the current difficulties of getting deep reinforcement learning to work. For example, even after weeks of optimizing hyperparameters and explotation-exploration rates, these models are still highly sensitive to initial conditions. A 30% failure rate is seen as "working." Irpan makes the argument that most attempts with deep RL fail but no one talks about it publicly, we only see the few cases where the problems are simplified enough to be feasible. This is still a new field - the breakthrough Atari DQN paper was published only 3 years ago - so there is plenty of room for more research and advancement.

We introduce several new black-box reductions that significantly improve the design of adaptive and parameter-free online learning algorithms by simplifying analysis, improving regret guarantees, and sometimes even improving runtime. We reduce parameter-free online learning to online exp-concave optimization, we reduce optimization in a Banach space to one-dimensional optimization, and we reduce optimization over a constrained domain to unconstrained optimization. All of our reductions run as fast as online gradient descent. We use our new techniques to improve upon the previously best regret bounds for parameter-free learning, and do so for arbitrary norms.

The field of learning analytics needs to adopt a more rigorous approach for predictive model evaluation that matches the complex practice of model-building. In this work, we present a procedure to statistically test hypotheses about model performance which goes beyond the state-of-the-practice in the community to analyze both algorithms and feature extraction methods from raw data. We apply this method to a series of algorithms and feature sets derived from a large sample of Massive Open Online Courses (MOOCs). While a complete comparison of all potential modeling approaches is beyond the scope of this paper, we show that this approach reveals a large gap in dropout prediction performance between forum-, assignment-, and clickstream-based feature extraction methods, where the latter is significantly better than the former two, which are in turn indistinguishable from one another. This work has methodological implications for evaluating predictive or AI-based models of student success, and practical implications for the design and targeting of at-risk student models and interventions.

"AI is the new electricity" If you're a machine learning and ai enthusiast, you definitely must know this guy. He is best known for his machine learning course on coursera which, for many, has been the first step in understanding artificial intelligence(read my blog about it here). Andrew has been teaching at stanford ever since he got his Phd in 2002. He founded and led the google brain team which is considered as one of the most progressive ML/AI research organisations in the world. He also founded the popular massive open online course (MOOC) site coursera, which now has over a thousand courses taught by ivy league professors.

Advanced Data Mining Projects with R takes you one step ahead in understanding the most complex data mining algorithms and implementing them in the popular R language. Follow up to our course Data Mining Projects in R, this course will teach you how to build your own recommendation engine. You will also implement dimensionality reduction and use it to build a real-world project. Going ahead, you will be introduced to the concept of neural networks and learn how to apply them for predictions, classifications, and forecasting. Finally, you will implement ggplot2, plotly and aspects of geomapping to create your own data visualization projects.By the end of this course, you will be well-versed with all the advanced data mining techniques and how to implement them using R, in any real-world scenario.

Whether it is a minor tweak, or a major new update, releasing a new version of a running system is a stressful time. While the release has typically gone through rounds of offline testing, real world testing often uncovers additional corner cases that may manifest themselves as bugs, inefficiencies, or overall poor performance. This is especially the case in machine learning applications, where models are typically trained to maximize a proxy objective, and a model that performs better on offline metrics is not guaranteed to work well in practice. The usual approach in such scenarios is to evaluate the new system through a series of closely monitored A/B tests. The new version is usually released to a small number of customers, and, if no concerns are found and metrics look good, the portion of traffic served by the new system is slowly increased. While A/B tests provide a sense of safety in that a detrimental change will be quickly observed and corrected (or rolled back), they are not a silver bullet. First, A/B tests are labor intensive--they are typically monitored manually, with an engineer, or a technician, checking the results of the test on a regular basis (for example, daily or weekly). Second, the evaluation is usually dependent on average metrics--e.g.

If you are looking for that one course that includes everything about data analysis with R, this is it. Let's get on this data analysis journey together. This course is a blend of text, videos, code examples, and assessments, which together makes your learning journey all the more exciting and truly rewarding. It includes sections that form a sequential flow of concepts covering a focused learning path presented in a modular manner. This helps you learn a range of topics at your own speed and also move towards your goal of solving data analysis problems with R. The R language is a powerful open source functional programming language.

Stanford University is one of the world's leading teaching and research universities. Since its opening in 1891, Stanford has been dedicated to finding solutions to big challenges and to preparing students for leadership in a complex world. The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is an American private research university located in Stanford, California on an 8,180-acre (3,310 ha) campus near Palo Alto, California, United States.

About this course: This course introduces the Bayesian approach to statistics, starting with the concept of probability and moving to the analysis of data. We will learn about the philosophy of the Bayesian approach as well as how to implement it for common types of data. We will compare the Bayesian approach to the more commonly-taught Frequentist approach, and see some of the benefits of the Bayesian approach. In particular, the Bayesian approach allows for better accounting of uncertainty, results that have more intuitive and interpretable meaning, and more explicit statements of assumptions. This course combines lecture videos, computer demonstrations, readings, exercises, and discussion boards to create an active learning experience.