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3D UAV Trajectory and Data Collection Optimisation via Deep Reinforcement Learning

arXiv.org Artificial Intelligence

Unmanned aerial vehicles (UAVs) are now beginning to be deployed for enhancing the network performance and coverage in wireless communication. However, due to the limitation of their on-board power and flight time, it is challenging to obtain an optimal resource allocation scheme for the UAV-assisted Internet of Things (IoT). In this paper, we design a new UAV-assisted IoT systems relying on the shortest flight path of the UAVs while maximising the amount of data collected from IoT devices. Then, a deep reinforcement learning-based technique is conceived for finding the optimal trajectory and throughput in a specific coverage area. After training, the UAV has the ability to autonomously collect all the data from user nodes at a significant total sum-rate improvement while minimising the associated resources used. Numerical results are provided to highlight how our techniques strike a balance between the throughput attained, trajectory, and the time spent. More explicitly, we characterise the attainable performance in terms of the UAV trajectory, the expected reward and the total sum-rate.


End-to-End Neuro-Symbolic Architecture for Image-to-Image Reasoning Tasks

arXiv.org Artificial Intelligence

Neural models and symbolic algorithms have recently been combined for tasks requiring both perception and reasoning. Neural models ground perceptual input into a conceptual vocabulary, on which a classical reasoning algorithm is applied to generate output. A key limitation is that such neural-to-symbolic models can only be trained end-to-end for tasks where the output space is symbolic. In this paper, we study neural-symbolic-neural models for reasoning tasks that require a conversion from an image input (e.g., a partially filled sudoku) to an image output (e.g., the image of the completed sudoku). While designing such a three-step hybrid architecture may be straightforward, the key technical challenge is end-to-end training -- how to backpropagate without intermediate supervision through the symbolic component. We propose NSNnet, an architecture that combines an image reconstruction loss with a novel output encoder to generate a supervisory signal, develops update algorithms that leverage policy gradient methods for supervision, and optimizes loss using a novel subsampling heuristic. We experiment on problem settings where symbolic algorithms are easily specified: a visual maze solving task and a visual Sudoku solver where the supervision is in image form. Experiments show high accuracy with significantly less data compared to purely neural approaches.


The FLORES-101 Evaluation Benchmark for Low-Resource and Multilingual Machine Translation

arXiv.org Artificial Intelligence

One of the biggest challenges hindering progress in low-resource and multilingual machine translation is the lack of good evaluation benchmarks. Current evaluation benchmarks either lack good coverage of low-resource languages, consider only restricted domains, or are low quality because they are constructed using semi-automatic procedures. In this work, we introduce the FLORES-101 evaluation benchmark, consisting of 3001 sentences extracted from English Wikipedia and covering a variety of different topics and domains. These sentences have been translated in 101 languages by professional translators through a carefully controlled process. The resulting dataset enables better assessment of model quality on the long tail of low-resource languages, including the evaluation of many-to-many multilingual translation systems, as all translations are multilingually aligned. By publicly releasing such a high-quality and high-coverage dataset, we hope to foster progress in the machine translation community and beyond.


How Did This Get Funded?! Automatically Identifying Quirky Scientific Achievements

arXiv.org Artificial Intelligence

Humor is an important social phenomenon, serving complex social and psychological functions. However, despite being studied for millennia humor is computationally not well understood, often considered an AI-complete problem. In this work, we introduce a novel setting in humor mining: automatically detecting funny and unusual scientific papers. We are inspired by the Ig Nobel prize, a satirical prize awarded annually to celebrate funny scientific achievements (example past winner: "Are cows more likely to lie down the longer they stand?"). This challenging task has unique characteristics that make it particularly suitable for automatic learning. We construct a dataset containing thousands of funny papers and use it to learn classifiers, combining findings from psychology and linguistics with recent advances in NLP. We use our models to identify potentially funny papers in a large dataset of over 630,000 articles. The results demonstrate the potential of our methods, and more broadly the utility of integrating state-of-the-art NLP methods with insights from more traditional disciplines.


KGPool: Dynamic Knowledge Graph Context Selection for Relation Extraction

arXiv.org Artificial Intelligence

We present a novel method for relation extraction (RE) from a single sentence, mapping the sentence and two given entities to a canonical fact in a knowledge graph (KG). Especially in this presumed sentential RE setting, the context of a single sentence is often sparse. This paper introduces the KGPool method to address this sparsity, dynamically expanding the context with additional facts from the KG. It learns the representation of these facts (entity alias, entity descriptions, etc.) using neural methods, supplementing the sentential context. Unlike existing methods that statically use all expanded facts, KGPool conditions this expansion on the sentence. We study the efficacy of KGPool by evaluating it with different neural models and KGs (Wikidata and NYT Freebase). Our experimental evaluation on standard datasets shows that by feeding the KGPool representation into a Graph Neural Network, the overall method is significantly more accurate than state-of-the-art methods.


Bridging the gender digital divide: AI Hackathon with Microsoft supports girls' digital skills

#artificialintelligence

Or so Hesme, aged 15, believed when she switched schools in 10th grade. "I thought I'd be terrible at it", she says. When she moved to Curro Heritage House High School, STEM classes were a regular part of the curriculum. She was nervous about that – but when her brother dared her to take a computer science class, she accepted the challenge to prove him wrong. Hesme loved her computer science class.


Top 10 machine learning startups in 2021 edition 2

#artificialintelligence

Founders Heu.ai 2. rpasaerialsolutions.com 3. Swiftnlift Media And Tech SwiftNLift is the Best Business Magazine across the globe for enterprises. I am really encouraged by the feedback received from the readers and the institutions which are in association with our magazine. Many thanks to my team for the work undertaken. I'm very glad to present this magazine to all the readers. The cover story has featured I Pavan Raju (Director) of Heu Technologies Private Limited. It is a platform for artificial intelligence solutions that empowers ventures to upgrade their business by solving challenging problems and enhancing them. Some print pieces have complementary components such as additional coverage, advertisements and still photography. There are regular columns by the editors with reflective articles to provide a window Artificial Intelligence and its features. Swiftnlift Magazine is not just a print or digital anymore but everything we do derives from its long-standing character, ...


Rethink the Connections among Generalization, Memorization and the Spectral Bias of DNNs

arXiv.org Machine Learning

Over-parameterized deep neural networks (DNNs) with sufficient capacity to memorize random noise can achieve excellent generalization performance, challenging the bias-variance trade-off in classical learning theory. Recent studies claimed that DNNs first learn simple patterns and then memorize noise; some other works showed a phenomenon that DNNs have a spectral bias to learn target functions from low to high frequencies during training. However, we show that the monotonicity of the learning bias does not always hold: under the experimental setup of deep double descent, the high-frequency components of DNNs diminish in the late stage of training, leading to the second descent of the test error. Besides, we find that the spectrum of DNNs can be applied to indicating the second descent of the test error, even though it is calculated from the training set only.


Data sets, fraud, and the future « Jon Rappoport's Blog

#artificialintelligence

Right off the bat, here is a scene from the near-future: AI takes a look at John Jones' medical records, does instant collating, and comes up with a disease diagnosis. Via Zoom, the doctor's AI assistant slaps on a diagnosis, and an hour later, two bottles of medical drugs arrive at Jones' door. One problem: the data set assembled by AI is preposterous. Jones' so-called symptoms don't add up to a disease. Only in another data set, held by the CDC, do the symptoms require a disease-label.


How long before AI can 'understand' animals?

Engadget

The Regent Honeyeaters of Australasia are forgetting how to talk. The songbird's habitat has been so severely devastated that its numbers are dwindling. Worse, the ones that remain are so scattered that the adult males are too far apart to teach the young how to sing for a mate -- how to speak their own language. The gradual loss of the Honeyeaters' song, their primary tool for wooing a partner, creates a vicious circle of spiraling decline. Humans, on the other hand, cannot shut up.