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Latent Gaussian Activity Propagation: Using Smoothness and Structure to Separate and Localize Sounds in Large Noisy Environments

Neural Information Processing Systems

We present an approach for simultaneously separating and localizing multiple sound sources using recorded microphone data. Inspired by topic models, our approach is based on a probabilistic model of inter-microphone phase differences, and poses separation and localization as a Bayesian inference problem. We assume sound activity is locally smooth across time, frequency, and location, and use the known position of the microphones to obtain a consistent separation. We compare the performance of our method against existing algorithms on simulated anechoic voice data and find that it obtains high performance across a variety of input conditions.


Iran arrests dozens accused of spying for Israel in new internal crackdown

FOX News

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Learning with SGD and Random Features

Neural Information Processing Systems

Sketching and stochastic gradient methods are arguably the most common techniques to derive efficient large scale learning algorithms. In this paper, we investigate their application in the context of nonparametric statistical learning. More precisely, we study the estimator defined by stochastic gradient with mini batches and random features. The latter can be seen as form of nonlinear sketching and used to define approximate kernel methods. The considered estimator is not explicitly penalized/constrained and regularization is implicit. Indeed, our study highlights how different parameters, such as number of features, iterations, step-size and mini-batch size control the learning properties of the solutions. We do this by deriving optimal finite sample bounds, under standard assumptions. The obtained results are corroborated and illustrated by numerical experiments.


Anthropic is doubling Claude's usage limits during off-peak hours for the next two weeks

Engadget

Anthropic is doubling Claude's usage limits during off-peak hours for the next two weeks The promotion runs from March 13 to March 27. To capitalize on Claude's recent spike in popularity, Anthropic is offering a limited-time promotion that doubles usage limits for anyone using its AI chatbot during off-peak hours. From March 13 to March 27, users on Free, Pro, Max, and Team plans will get double the usage limits in a five-hour window when using Claude outside weekday hours between 8 AM and 2 PM ET. According to Anthropic, the promotion is automatic, and users don't have to enable anything to get the benefits. A small thank you to everyone using Claude: We're doubling usage outside our peak hours for the next two weeks.



ChannelNets: Compact and Efficient Convolutional Neural Networks via Channel-Wise Convolutions

Neural Information Processing Systems

Convolutional neural networks (CNNs) have shown great capability of solving various artificial intelligence tasks. However, the increasing model size has raised challenges in employing them in resource-limited applications. In this work, we propose to compress deep models by using channel-wise convolutions, which replace dense connections among feature maps with sparse ones in CNNs. Based on this novel operation, we build light-weight CNNs known as ChannelNets.



New Insight into Hybrid Stochastic Gradient Descent: Beyond With-Replacement Sampling and Convexity

Neural Information Processing Systems

As an incremental-gradient algorithm, the hybrid stochastic gradient descent (HSGD) enjoys merits of both stochastic and full gradient methods for finite-sum minimization problem. However, the existing rate-of-convergence analysis for HSGD is made under with-replacement sampling (WRS) and is restricted to convex problems. It is not clear whether HSGD still carries these advantages under the common practice of without-replacement sampling (WoRS) for non-convex problems. In this paper, we affirmatively answer this open question by showing that under WoRS and for both convex and non-convex problems, it is still possible for HSGD (with constant step-size) to match full gradient descent in rate of convergence, while maintaining comparable sample-size-independent incremental first-order oracle complexity to stochastic gradient descent. For a special class of finite-sum problems with linear prediction models, our convergence results can be further improved in some cases. Extensive numerical results confirm our theoretical affirmation and demonstrate the favorable efficiency of WoRS-based HSGD.


Immature men are to blame for Britain's 'missing babies', report warns - because they delay responsibilities until later in life

Daily Mail - Science & tech

Secret of the booming Florida county desired by families that's seeing influx of residents Conniving couple whose greedy'pervert' plot'drove innocent disabled man to suicide' given stunningly short sentences I've FINALLY found something that works on my rosacea: This new anti-ageing treatment beloved of celebrities really is a game-changer Insufferable blowhard Stephen Colbert is being taken out like the trash... and thank God! What he's done is so diabolical: MAUREEN CALLAHAN Mass cancellations as Southwest Airlines pulls out of two of America's biggest airports Extramarital sex with witches, cursed bloodlines and possessed politicians: DC's chief exorcist reveals the potent stench of evil among America's elite We were the picture-perfect family of faith. The evil of sex was drilled into me... then finally I gave in to every depraved urge Trump says he's not ready to make a deal with Iran despite them asking for a ceasefire: 'The terms aren't good enough yet!' JFK Jr's mortifying night of phone sex... day Sarah Jessica Parker ditched her underwear to seduce him in public... and the girlfriend he REALLY wanted to marry: All the women before Carolyn Kim Jong Un is joined by his heir-apparent teenage daughter for'invasion rehearsal' drills Obama Center asks for 100 unpaid volunteers despite hiring the former president's'close friend' as CEO on $740K Insane moment NYC cab plows into pedestrians... and the miracle that saved them from death Angelina Jolie and George Clooney lead stars who have fled the US for France as Paris is dubbed'Frollywood' Harry Styles kisses male SNL star in wild opening monologue as he confronts woke'queerbaiting' claims head on Truth about'super secretive' Michael B. Jordan's love life... and real reason he is perpetually single: Years of private'heartache' and'loneliness' laid bare America's most expensive ZIP codes revealed - and the surprising state that dominates the list I looked like a monster after a car accident burned off my face... but a pioneering face transplant gave me my life back. Immature men are to blame for Britain's'missing babies', report warns - because they delay responsibilities until later in life Britain's'missing babies' can be blamed on immature men who are delaying responsibilities until later in life, according to a report. Research from the Centre for Social Justice (CSJ) think tank predicts around 600,000 young women may miss out on motherhood partly because men don't feel ready for children until they get older. In the report, called Baby Bust, the organisation says there are a range of reasons for falling birth rates including the cost of childcare, wanting to move into a larger house, prioritising a career or not finding the right partner.


Learning Loop Invariants for Program Verification

Neural Information Processing Systems

The problem is undecidable and even practical instances are challenging. Inspired by how human experts construct loop invariants, we propose a reasoning framework Code2Inv that constructs the solution by multi-step decision making and querying an external program graph memory block. By training with reinforcement learning, Code2Inv captures rich program features and avoids the need for ground truth solutions as supervision. Compared to previous learning tasks in domains with graph-structured data, it addresses unique challenges, such as a binary objective function and an extremely sparse reward that is given by an automated theorem prover only after the complete loop invariant is proposed. We evaluate Code2Inv on a suite of 133 benchmark problems and compare it to three state-of-the-art systems. It solves 106 problems compared to 73 by a stochastic search-based system, 77 by a heuristic search-based system, and 100 by a decision tree learning-based system. Moreover, the strategy learned can be generalized to new programs: compared to solving new instances from scratch, the pre-trained agent is more sample efficient in finding solutions.