russo
Disentangling Neural Disjunctive Normal Form Models
Baugh, Kexin Gu, Perreault, Vincent, Baugh, Matthew, Dickens, Luke, Inoue, Katsumi, Russo, Alessandra
Neural Disjunctive Normal Form (DNF) based models are powerful and interpretable approaches to neuro-symbolic learning and have shown promising results in classification and reinforcement learning settings without prior knowledge of the tasks. However, their performance is degraded by the thresholding of the post-training symbolic translation process. We show here that part of the performance degradation during translation is due to its failure to disentangle the learned knowledge represented in the form of the networks' weights. We address this issue by proposing a new disentanglement method; by splitting nodes that encode nested rules into smaller independent nodes, we are able to better preserve the models' performance. Through experiments on binary, multiclass, and multilabel classification tasks (including those requiring predicate invention), we demonstrate that our disentanglement method provides compact and interpretable logical representations for the neural DNF-based models, with performance closer to that of their pre-translation counterparts.
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Trump urged by Ben Stiller, Paul McCartney and hundreds of stars to protect AI copyright rules
The'America's Got Talent' judge told Fox News Digital why he doesn't like AI technology in songwriting. "We firmly believe that America's global AI leadership must not come at the expense of our essential creative industries," the letter, addressed to Trump's Office of Science and Technology Policy and shared by Deadline and Variety, began. "America's arts and entertainment industry supports over 2.3M American jobs with over 229Bn in wages annually, while providing the foundation for American democratic influence and soft power abroad. The letter was submitted as part of comments on the Trump administration's U.S. AI Action Plan. WHAT IS ARTIFICIAL INTELLIGENCE (AI)? SIMON COWELL WARNS AI'SHOULDN'T BE ABLE TO STEAL' HUMAN TALENT "Access to America's creative catalog of films, writing, video content, and music is not a matter of national security.
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Netflix's Most Expensive Movie Ever Is Here, and It's a Monumental Disaster
When he got his first glimpse of a movie studio, Orson Welles excitedly proclaimed it "the biggest electric train set any boy ever had." But with a reported budget of more than 300 million, Joe and Anthony Russo's The Electric State makes Welles' train set look like a busted caboose. The most expensive movie in Netflix's history, it's also among the costliest of all time, joining a list that includes the brothers' own Avengers: Infinity War and Avengers: Endgame. If the Russos are the most profligate creators in history--their Amazon series Citadel is also one of the most expensive TV shows ever made--they're among the most successful too. And yet for all the money they're making, and all that they're allowed to spend, they don't seem to be enjoying themselves very much.
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RUSSO: Robust Underwater SLAM with Sonar Optimization against Visual Degradation
Pan, Shu, Hong, Ziyang, Hu, Zhangrui, Xu, Xiandong, Lu, Wenjie, Hu, Liang
Visual degradation in underwater environments poses unique and significant challenges, which distinguishes underwater SLAM from popular vision-based SLAM on the ground. In this paper, we propose RUSSO, a robust underwater SLAM system which fuses stereo camera, inertial measurement unit (IMU), and imaging sonar to achieve robust and accurate localization in challenging underwater environments for 6 degrees of freedom (DoF) estimation. During visual degradation, the system is reduced to a sonar-inertial system estimating 3-DoF poses. The sonar pose estimation serves as a strong prior for IMU propagation, thereby enhancing the reliability of pose estimation with IMU propagation. Additionally, we propose a SLAM initialization method that leverages the imaging sonar to counteract the lack of visual features during the initialization stage of SLAM. We extensively validate RUSSO through experiments in simulator, pool, and sea scenarios. The results demonstrate that RUSSO achieves better robustness and localization accuracy compared to the state-of-the-art visual-inertial SLAM systems, especially in visually challenging scenarios. To the best of our knowledge, this is the first time fusing stereo camera, IMU, and imaging sonar to realize robust underwater SLAM against visual degradation.
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Russo-Ukrainian war disinformation detection in suspicious Telegram channels
The paper proposes an advanced approach for identifying disinformation on Telegram channels related to the Russo-Ukrainian conflict, utilizing state-of-the-art (SOTA) deep learning techniques and transfer learning. Traditional methods of disinformation detection, often relying on manual verification or rule-based systems, are increasingly inadequate in the face of rapidly evolving propaganda tactics and the massive volume of data generated daily. To address these challenges, the proposed system employs deep learning algorithms, including LLM models, which are fine-tuned on a custom dataset encompassing verified disinformation and legitimate content. The paper's findings indicate that this approach significantly outperforms traditional machine learning techniques, offering enhanced contextual understanding and adaptability to emerging disinformation strategies.
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Dual-Directed Algorithm Design for Efficient Pure Exploration
We consider pure-exploration problems in the context of stochastic sequential adaptive experiments with a finite set of alternative options. The goal of the decision-maker is to accurately answer a query question regarding the alternatives with high confidence with minimal measurement efforts. A typical query question is to identify the alternative with the best performance, leading to ranking and selection problems, or best-arm identification in the machine learning literature. We focus on the fixed-precision setting and derive a sufficient condition for optimality in terms of a notion of strong convergence to the optimal allocation of samples. Using dual variables, we characterize the necessary and sufficient conditions for an allocation to be optimal. The use of dual variables allow us to bypass the combinatorial structure of the optimality conditions that relies solely on primal variables. Remarkably, these optimality conditions enable an extension of top-two algorithm design principle, initially proposed for best-arm identification. Furthermore, our optimality conditions give rise to a straightforward yet efficient selection rule, termed information-directed selection, which adaptively picks from a candidate set based on information gain of the candidates. We outline the broad contexts where our algorithmic approach can be implemented. We establish that, paired with information-directed selection, top-two Thompson sampling is (asymptotically) optimal for Gaussian best-arm identification, solving a glaring open problem in the pure exploration literature. Our algorithm is optimal for $\epsilon$-best-arm identification and thresholding bandit problems. Our analysis also leads to a general principle to guide adaptations of Thompson sampling for pure-exploration problems. Numerical experiments highlight the exceptional efficiency of our proposed algorithms relative to existing ones.
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Information-Directed Selection for Top-Two Algorithms
You, Wei, Qin, Chao, Wang, Zihao, Yang, Shuoguang
We consider the best-k-arm identification problem for multi-armed bandits, where the objective is to select the exact set of k arms with the highest mean rewards by sequentially allocating measurement effort. We characterize the necessary and sufficient conditions for the optimal allocation using dual variables. Remarkably these optimality conditions lead to the extension of top-two algorithm design principle (Russo, 2020), initially proposed for best-arm identification. Furthermore, our optimality conditions induce a simple and effective selection rule dubbed information-directed selection (IDS) that selects one of the top-two candidates based on a measure of information gain. As a theoretical guarantee, we prove that integrated with IDS, top-two Thompson sampling is (asymptotically) optimal for Gaussian best-arm identification, solving a glaring open problem in the pure exploration literature (Russo, 2020). As a by-product, we show that for k > 1, top-two algorithms cannot achieve optimality even when the algorithm has access to the unknown "optimal" tuning parameter. Numerical experiments show the superior performance of the proposed top-two algorithms with IDS and considerable improvement compared with algorithms without adaptive selection.
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Listen to These Photographs of Sparkling Galaxies
Some include visible light, which is how astronomers are able to photograph them with space telescopes like Hubble. But the James Webb Space Telescope and the Chandra X-ray Observatory peer at heavenly objects in infrared and x-ray wavelengths that are invisible to the human eye. That data is often translated into visible colors to produce spectacular space images. Now, a group of astronomers is making those images accessible to a wider audience that includes visually impaired people--by turning the data into almost musical sequences of sounds. "If you only make a visual of a Chandra image or another NASA image, you can be leaving people behind," says Kim Arcand, a visualization scientist who collaborates with a small, independent group of astronomers and musicians on a science and art project called SYSTEM Sounds.
On Convex Data-Driven Inverse Optimal Control for Nonlinear, Non-stationary and Stochastic Systems
Garrabe, Emiland, Jesawada, Hozefa, Del Vecchio, Carmen, Russo, Giovanni
This paper is concerned with a finite-horizon inverse control problem, which has the goal of inferring, from observations, the possibly non-convex and non-stationary cost driving the actions of an agent. In this context, we present a result that enables cost estimation by solving an optimization problem that is convex even when the agent cost is not and when the underlying dynamics is nonlinear, non-stationary and stochastic. To obtain this result, we also study a finite-horizon forward control problem that has randomized policies as decision variables. For this problem, we give an explicit expression for the optimal solution. Moreover, we turn our findings into algorithmic procedures and we show the effectiveness of our approach via both in-silico and experimental validations with real hardware. All the experiments confirm the effectiveness of our approach.
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Will AI impact your job? Some industries the technology is likely to have major impacts on
Doctors believe Artificial Intelligence is now saving lives, after a major advancement in breast cancer screenings. A.I. is detecting early signs of the disease, in some cases years before doctors would find the cancer on a traditional scan. No matter what industry you work in, it is more than likely that artificial intelligence is going to impact your job in some capacity. That being said, it is going to affect some industries more than others. Predicting what jobs will look like 20 years from now or even ten for that matter is tricky. There are jobs that exist now that we couldn't have imagined ten years ago.
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