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Feature Engineering for Machine Learning

#artificialintelligence

Welcome to Feature Engineering for Machine Learning, the most comprehensive course on feature engineering available online. In this course, you will learn how to engineer features and build more powerful machine learning models. Who is this course for? So, you've made your first steps into data science, you know the most commonly used prediction models, you perhaps even built a linear regression or a classification tree model. At this stage you're probably starting to encounter some challenges - you realize that your data set is dirty, there are lots of values missing, some variables contain labels instead of numbers, others do not meet the assumptions of the models, and on top of everything you wonder whether this is the right way to code things up.


Identifying Plagiarism during Online Exams

#artificialintelligence

During the Covid-19 pandemic, many educational institutions have been forced to provide home schooling. This includes alternative examination methods for schools and universities. A traditional exam is written in person under permanent surveillance of educational staff. However, online teaching and examinations can fail to ensure a proper surveillance of students. Different online proctoring methods are already used to make plagiarism or examination fraud more difficult.



Using is Artificial Intelligence in Education

#artificialintelligence

The events connected with the spread of COVID-19 make both students and teachers consider using more artificial intelligence in schools. With so many benefits, this innovative technology can greatly advance the overall education system. Simply put, it has more capabilities in comparison to common tools. What are examples of artificial intelligence in education? Using AI in education will improve the learning experience of both students and teachers. It can be trained to perform a wide range of tasks and can be programmed to address the unique needs of each individual.


Pixel Recursive Super Resolution. Paper @Google Brain. Ryan Dahl, Mohammad Norouzi & Jonathon Shlens

#artificialintelligence

Research ... hoy traemos a este espacio otro paper de Google ... aquí os dejamos el Abstract We present a pixel recursive super resolution model that synthesizes realistic details into images while enhancing their resolution. A low resolution image may correspond to multiple plausible high resolution images, thus modeling the super resolution process with a pixel independent conditional model often results in averaging different details–hence blurry edges. By contrast, our model is able to represent a multimodal conditional distribution by properly modeling the statistical dependencies among the high resolution image pixels, conditioned on a low resolution input. We employ a PixelCNN architecture to define a strong prior over natural images and jointly optimize this prior with a deep conditioning convolutional network. Human evaluations indicate that samples from our proposed model look.(leer


The GatedTabTransformer. An enhanced deep learning architecture for tabular modeling

arXiv.org Artificial Intelligence

There is an increasing interest in the application of deep learning architectures to tabular data. One of the state-of-the-art solutions is TabTransformer which incorporates an attention mechanism to better track relationships between categorical features and then makes use of a standard MLP to output its final logits. In this paper we propose multiple modifications to the original TabTransformer performing better on binary classification tasks for three separate datasets with more than 1% AUROC gains. Inspired by gated MLP, linear projections are implemented in the MLP block and multiple activation functions are tested. We also evaluate the importance of specific hyper parameters during training.


Building Human-like Communicative Intelligence: A Grounded Perspective

arXiv.org Artificial Intelligence

Modern Artificial Intelligence (AI) systems excel at diverse tasks, from image classification to strategy games, even outperforming humans in many of these domains. After making astounding progress in language learning in the recent decade, AI systems, however, seem to approach the ceiling that does not reflect important aspects of human communicative capacities. Unlike human learners, communicative AI systems often fail to systematically generalize to new data, suffer from sample inefficiency, fail to capture common-sense semantic knowledge, and do not translate to real-world communicative situations. Cognitive Science offers several insights on how AI could move forward from this point. This paper aims to: (1) suggest that the dominant cognitively-inspired AI directions, based on nativist and symbolic paradigms, lack necessary substantiation and concreteness to guide progress in modern AI, and (2) articulate an alternative, "grounded", perspective on AI advancement, inspired by Embodied, Embedded, Extended, and Enactive Cognition (4E) research. I review results on 4E research lines in Cognitive Science to distinguish the main aspects of naturalistic learning conditions that play causal roles for human language development. I then use this analysis to propose a list of concrete, implementable components for building "grounded" linguistic intelligence. These components include embodying machines in a perception-action cycle, equipping agents with active exploration mechanisms so they can build their own curriculum, allowing agents to gradually develop motor abilities to promote piecemeal language development, and endowing the agents with adaptive feedback from their physical and social environment. I hope that these ideas can direct AI research towards building machines that develop human-like language abilities through their experiences with the world.


'Gutfeld' on COVID warnings for New Year's Eve, 2021 in review

FOX News

'Gutfeld!' panel discusses the year in review as 2021 comes to a close. This is a rush transcript from "Gutfeld!," December 30, 2021. This copy may not be in its final form and may be updated. EMILY COMPAGNO, FOX NEWS CHANNEL HOST: I know what you're thinking. Greg's never looked at this good in a dress. Like a tiny Ghost of Christmas Present, because I'm celebrating the holiday today. Because this year COVID robbed me of Christmas with my family. COVID robbed us of our studio audience. And it robbed me of my Christmas Eve Feast of the Seven Fishes. So to make up for it, we are having a feast tonight. COMPAGNO: In New Year's Eve news, Omicron fear mongers are warning people to stay away from New York's Times Square celebration. Even though previous crowds were exposed to something much worse. Thank God it'll be me hosting in Time Square this year. See you at 10:00 p.m. Eastern on Fox News. Germany's also banned large group gatherings. But you know who's never bans large gatherings of Germans? China's Wuhan Institute of virology recently hosted a conference on lab safety, to which the world responded a little (BLEEP) late, guys. In a recent segment on COVID Safety, CNN's Dr. Leana Wen admitted cloth masks don't stop transmission of the virus. Today in New York Mayor Bill de Blasio said he doesn't believe in shutdowns despite having shut down the city for months. He then added "I also oppose letting criminals roam free to murder people." Chris Tucker turned down a $10 million payday for a sequel to the awesome movie Friday, saying he's too mature to be seen behaving badly on screen anymore.


My '21 Journey

#artificialintelligence

The year 2021 was filled with numerous challenges and ups and downs but despite these, I emerged a better and stronger person. When I started my career in tech, I was inclined to the hardware part. However, on getting into the software space, I developed a keen interest in AI and wanted to get to learn the skill but I was confused and lost. I had no idea where and how to start. But, I took the leap of faith towards my path of interest.


Avoiding Catastrophe: Active Dendrites Enable Multi-Task Learning in Dynamic Environments

arXiv.org Artificial Intelligence

A key challenge for AI is to build embodied systems that operate in dynamically changing environments. Such systems must adapt to changing task contexts and learn continuously. Although standard deep learning systems achieve state of the art results on static benchmarks, they often struggle in dynamic scenarios. In these settings, error signals from multiple contexts can interfere with one another, ultimately leading to a phenomenon known as catastrophic forgetting. In this article we investigate biologically inspired architectures as solutions to these problems. Specifically, we show that the biophysical properties of dendrites and local inhibitory systems enable networks to dynamically restrict and route information in a context-specific manner. Our key contributions are as follows. First, we propose a novel artificial neural network architecture that incorporates active dendrites and sparse representations into the standard deep learning framework. Next, we study the performance of this architecture on two separate benchmarks requiring task-based adaptation: Meta-World, a multi-task reinforcement learning environment where a robotic agent must learn to solve a variety of manipulation tasks simultaneously; and a continual learning benchmark in which the model's prediction task changes throughout training. Analysis on both benchmarks demonstrates the emergence of overlapping but distinct and sparse subnetworks, allowing the system to fluidly learn multiple tasks with minimal forgetting. Our neural implementation marks the first time a single architecture has achieved competitive results on both multi-task and continual learning settings. Our research sheds light on how biological properties of neurons can inform deep learning systems to address dynamic scenarios that are typically impossible for traditional ANNs to solve.