Education
Object Detection With TensorFlow 2.0
Building A Object Detection model is not an easy task, and it's slightly different from other Models. Majorly Because you need to prepare the data in a particular way. I will Try to Explain each step why we are doing it and what is used for it. There are many new libraries we will try to why are we using these libraries and same time we will train our Model and get the final result. To get started with object detection using TensorFlow 2.0, you should first familiarize yourself with the basics of machine learning and TensorFlow.
IDRC Predicts the Future of Artificial Intelligence in the Global South
There is little doubt that artificial intelligence technologies will be transformational. Breathtaking advances will be made, extraordinary wealth will be created, and many of our social and institutional structures will be transformed. However, we must ask: whose lives will be improved (or harmed) by these technologies? A key assertion of this paper, "Artificial Intelligence and Human Development" is that, if we continue blindly forward, we should expect to see increased inequality alongside economic disruption, social unrest, and in some cases, political instability, with the technologically disadvantaged and underrepresented faring the worst. This prediction stems from the interweaving of two elements: the nature of AI applications, and projections of the impacts of AI applications in the current global context.
NYC Bans Students and Teachers from Using ChatGPT
OpenAI released ChatGPT in November 2022. Since then, it's generated a lot of hype, debate, and fear-mongering about the continued rise of artificially intelligent systems in creative industries. In December, Stack Overflow banned it for consistently giving incorrect answers to programming questions. Even OpenAI's CEO Sam Altman doesn't think it's that good; he tweeted last month that "ChatGPT is incredibly limited, but good enough at some things to create a misleading impression of greatness," and that it's "a mistake to be relying on it for anything important right now."
Ranking Inferences Based on the Top Choice of Multiway Comparisons
Fan, Jianqing, Lou, Zhipeng, Wang, Weichen, Yu, Mengxin
This paper considers ranking inference of $n$ items based on the observed data on the top choice among $M$ randomly selected items at each trial. This is a useful modification of the Plackett-Luce model for $M$-way ranking with only the top choice observed and is an extension of the celebrated Bradley-Terry-Luce model that corresponds to $M=2$. Under a uniform sampling scheme in which any $M$ distinguished items are selected for comparisons with probability $p$ and the selected $M$ items are compared $L$ times with multinomial outcomes, we establish the statistical rates of convergence for underlying $n$ preference scores using both $\ell_2$-norm and $\ell_\infty$-norm, with the minimum sampling complexity. In addition, we establish the asymptotic normality of the maximum likelihood estimator that allows us to construct confidence intervals for the underlying scores. Furthermore, we propose a novel inference framework for ranking items through a sophisticated maximum pairwise difference statistic whose distribution is estimated via a valid Gaussian multiplier bootstrap. The estimated distribution is then used to construct simultaneous confidence intervals for the differences in the preference scores and the ranks of individual items. They also enable us to address various inference questions on the ranks of these items. Extensive simulation studies lend further support to our theoretical results. A real data application illustrates the usefulness of the proposed methods convincingly.
Understanding Urban Water Consumption using Remotely Sensed Data
Mohanty, Shaswat, Vijay, Anirudh, Deshpande, Shailesh
Urban metabolism is an active field of research that deals with the estimation of emissions and resource consumption from urban regions. The analysis could be carried out through a manual surveyor by the implementation of elegant machine learning algorithms. In this exploratory work, we estimate the water consumption by the buildings in the region captured by satellite imagery. To this end, we break our analysis into three parts: i) Identification of building pixels, given a satellite image, followed by ii) identification of the building type (residential/non-residential) from the building pixels, and finally iii) using the building pixels along with their type to estimate the water consumption using the average per unit area consumption for different building types as obtained from municipal surveys.
FF-NSL: Feed-Forward Neural-Symbolic Learner
Cunnington, Daniel, Law, Mark, Russo, Alessandra, Lobo, Jorge
Logic-based machine learning [1, 2] learns interpretable knowledge expressed in the form of a logic program, called a hypothesis, that explains labelled examples in the context of (optional) background knowledge. Recent logic-based machine learning systems have demonstrated the ability to learn highly complex and noise-tolerant hypotheses in a data efficient manner (e.g., Learning from Answer Sets (LAS) [2]). However, they require labelled examples to be specified in a structured logical form, which limits their applicability to many real-world problems. On the other hand, differentiable learning systems, such as (deep) neural networks, are able to learn directly from unstructured data, but they require large amounts of training data and their learned models are difficult to interpret [3]. Within neural-symbolic artificial intelligence, many approaches aim to integrate neural and symbolic systems with the goal of preserving the benefits of both paradigms [4, 5]. Most neural-symbolic integrations assume the existence of pre-defined knowledge expressed symbolically, or logically, and focus on training a neural network to extract symbolic features from raw unstructured data [6-10]. In this paper, we introduce Feed-Forward Neural-Symbolic Learner (FFNSL), a neural-symbolic learning framework that assumes the opposite. Given a pre-trained neural network, FFNSL uses a logic-based machine learning system robust to noise to learn a logic-based hypothesis whose symbolic features are constructed from neural network predictions.
Emergent collective intelligence from massive-agent cooperation and competition
Chen, Hanmo, Tao, Stone, Chen, Jiaxin, Shen, Weihan, Li, Xihui, Yu, Chenghui, Cheng, Sikai, Zhu, Xiaolong, Li, Xiu
Inspired by organisms evolving through cooperation and competition between different populations on Earth, we study the emergence of artificial collective intelligence through massive-agent reinforcement learning. To this end, We propose a new massive-agent reinforcement learning environment, Lux, where dynamic and massive agents in two teams scramble for limited resources and fight off the darkness. In Lux, we build our agents through the standard reinforcement learning algorithm in curriculum learning phases and leverage centralized control via a pixel-to-pixel policy network. As agents co-evolve through self-play, we observe several stages of intelligence, from the acquisition of atomic skills to the development of group strategies. Since these learned group strategies arise from individual decisions without an explicit coordination mechanism, we claim that artificial collective intelligence emerges from massive-agent cooperation and competition. We further analyze the emergence of various learned strategies through metrics and ablation studies, aiming to provide insights for reinforcement learning implementations in massive-agent environments.
Learning from a Biased Sample
Sahoo, Roshni, Lei, Lihua, Wager, Stefan
The empirical risk minimization approach to data-driven decision making assumes that we can learn a decision rule from training data drawn under the same conditions as the ones we want to deploy it in. However, in a number of settings, we may be concerned that our training sample is biased, and that some groups (characterized by either observable or unobservable attributes) may be under- or over-represented relative to the general population; and in this setting empirical risk minimization over the training set may fail to yield rules that perform well at deployment. We propose a model of sampling bias called $\Gamma$-biased sampling, where observed covariates can affect the probability of sample selection arbitrarily much but the amount of unexplained variation in the probability of sample selection is bounded by a constant factor. Applying the distributionally robust optimization framework, we propose a method for learning a decision rule that minimizes the worst-case risk incurred under a family of test distributions that can generate the training distribution under $\Gamma$-biased sampling. We apply a result of Rockafellar and Uryasev to show that this problem is equivalent to an augmented convex risk minimization problem. We give statistical guarantees for learning a model that is robust to sampling bias via the method of sieves, and propose a deep learning algorithm whose loss function captures our robust learning target. We empirically validate our proposed method in simulations and a case study on ICU length of stay prediction.
A guide to the quantum workforce of tomorrow
Tristan is a futurist covering human-centric artificial intelligence advances, quantum computing, STEM, physics, and space stuff. Pronouns: (show all) Tristan is a futurist covering human-centric artificial intelligence advances, quantum computing, STEM, physics, and space stuff. It's 2022 and the near billion-dollar quantum computing sector has gone from a passion project for forward-thinking physicists to a thriving B2B industry. Experts predict the market for quantum technologies will quadruple in value by 2029. Simply put there's never been a better time than right now for potential jobseekers to get in on what, arguably, could be the greatest technological revolution since the advent of the internet.
The ChatAlgebra Educational Revolution
All the world is talking about ChatGPT, but I am more interested in ChatAlgebra. I am interested in lowering the barriers to participation in computer science (CS) education, and increasing the diversity of the students who study CS and related disciplines. And I think ChatAlgebra may be a key that can unlock the gate. The curricular structure of K-12 education devotes enormous emphasis (and time) to the goal of Algebra for All. Our educational institutions are not very successful at this goal; most students struggle in Algebra.