Hashing is one of the most popular methods for similarity search because of its speed and efficiency. Dense binary hashing is prevalent in the literature. Recently, insect olfaction was shown to be structurally and functionally analogous to sparse hashing [6]. Here, we prove that this biological mechanism is the solution to a well-posed optimization problem. Furthermore, we show that orthogonality increases the accuracy of sparse hashing. Next, we present a novel method, Procrustean Orthogonal Sparse Hashing (POSH), that unifies these findings, learning an orthogonal transform from training data compatible with the sparse hashing mechanism. We provide theoretical evidence of the shortcomings of Optimal Sparse Lifting (OSL) [22] and BioHash [30], two related olfaction-inspired methods, and propose two new methods, Binary OSL and SphericalHash, to address these deficiencies. We compare POSH, Binary OSL, and SphericalHash to several state-of-the-art hashing methods and provide empirical results for the superiority of the proposed methods across a wide range of standard benchmarks and parameter settings.

Sometimes the capturing of an image or a single video can have a transformative effect. George Floyd's killing is an example. The eight-minute, 46-second video speaks for itself. That is why it sent so many Americans onto the streets. And anyone contending with state violence, whether they are in Minneapolis, Hong Kong or the Middle East, knows that sometimes all they need to prove their point - to expose illegality - is the right picture.

IgnitionOne is an international digital marketing company with offices in Brussels, London, New York, Sao Paulo and Tokyo. The company has different products including display advertising, search marketing, a data management platform, and web personalization. Primary responsibilities for this role are to develop forecasting and optimization methodologies for digital advertising. Our platform currently processes 2 trillions transactions per year, growing at 30% a year, making us a company that understands "Big Data." We are using the latest machine learning tools and data processing technologies for our work and are looking for someone who is passionate about data sciences to join the team.

We propose a multi-head attention mechanism as a blending layer in a neural network model that translates natural language to a high level behavioral language for indoor robot navigation. We follow the framework established by (Zang et al., 2018a) that proposes the use of a navigation graph as a knowledge base for the task. Our results show significant performance gains when translating instructions on previously unseen environments, therefore, improving the generalization capabilities of the model.

The predominant approach to open-domain dialog generation relies on end-to-end training of neural models on chat datasets. However, this approach provides little insight as to what these models learn (or do not learn) about engaging in dialog. In this study, we analyze the internal representations learned by neural open-domain dialog systems and evaluate the quality of these representations for learning basic conversational skills. Our results suggest that standard open-domain dialog systems struggle with answering questions, inferring contradiction, and determining the topic of conversation, among other tasks. We also find that the dyadic, turn-taking nature of dialog is not fully leveraged by these models. By exploring these limitations, we highlight the need for additional research into architectures and training methods that can better capture high-level information about dialog.

Link prediction in graphs is an important task in the fields of network science and machine learning. We propose a flexible means of regularization for link prediction based on an approximation of the Kolmogorov complexity of graphs. Informally, the Kolmogorov complexity of an object is the length of the shortest computer program that produces the object. Complex networks are often generated, in part, by simple mechanisms; for example, many citation networks and social networks are approximately scale-free and can be explained by preferential attachment. A preference for predicting graphs with simpler generating mechanisms motivates our choice of Kolmogorov complexity as a regularization term. Our method is differentiable, fast and compatible with recent advances in link prediction algorithms based on graph neural networks. We demonstrate the effectiveness of our regularization technique on a set of diverse real-world networks.

Don't worry, we speak: Español (Spanish), too! Contxto – Artificial intelligence (AI) technology was already quite the sought-after technology of 2020. Examples included the launch of SoftBank's program to train professionals across Latin America in data science and AI. Not to mention the multiple cases of funding for AI startups like Brazilian Kzas and Colombian VOIQ. However coronavirus (Covid-19) has further illustrated the use of AI in an array of ways.

The response to protests against police brutality, ignited by the murder of Geoge Floyd, have been nothing short of draconian. While government forces on the ground gleefully beat protesters and passersby with batons and doused them with tear gas, the US Border Patrol has deployed Reaper drones to surveil citizens from the skies and the DEA has been tasked with tracking protesters. The outsized surveillance response displayed so far by the Feds has driven concerns from privacy advocates over the potential use of more insidious forms of snooping, from facial recognition algorithms to cell-site simulation (aka the Stingray and Crossbow systems.) People stuck in traffic are witnessing NYPD beat up folks on their way home. "All the technology we have been warning about for a while are starting to come to fruition in these protests," Dave Maass, a senior investigative researcher at digital rights group the Electronic Frontier Foundation, told Reuters on Monday.

Current out-of-distribution detection (ODD) approaches present severe drawbacks that make impracticable their large scale adoption in real-world applications. In this paper, we propose a novel loss called Hyperparameter-Free IsoMax that overcomes these limitations. We modified the original IsoMax loss to improve ODD performance while maintaining benefits such as high classification accuracy, fast and energy-efficient inference, and scalability. The global hyperparameter is replaced by learnable parameters to increase performance. Additionally, a theoretical motivation to explain the high ODD performance of the proposed loss is presented. Finally, to keep high classification performance, slightly different inference mathematical expressions for classification and ODD are developed. No access to out-of-distribution samples is required, as there is no hyperparameter to tune. Our solution works as a straightforward SoftMax loss drop-in replacement that can be incorporated without relying on adversarial training or validation, model structure chances, ensembles methods, or generative approaches. The experiments showed that our approach is competitive against state-of-the-art solutions while avoiding their additional requirements and undesired side effects.

None of these people exist. These images were generated using deepfake technology. Last month during ESPN's hit documentary series The Last Dance, State Farm debuted a TV commercial that has become one of the most widely discussed ads in recent memory. It appeared to show footage from 1998 of an ESPN analyst making shockingly accurate predictions about the year 2020. As it turned out, the clip was not genuine: it was generated using cutting-edge AI.