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A Contextual Bandit Approach for Learning to Plan in Environments with Probabilistic Goal Configurations

arXiv.org Artificial Intelligence

Object-goal navigation (Object-nav) entails searching, recognizing and navigating to a target object. Object-nav has been extensively studied by the Embodied-AI community, but most solutions are often restricted to considering static objects (e.g., television, fridge, etc.). We propose a modular framework for object-nav that is able to efficiently search indoor environments for not just static objects but also movable objects (e.g. fruits, glasses, phones, etc.) that frequently change their positions due to human intervention. Our contextual-bandit agent efficiently explores the environment by showing optimism in the face of uncertainty and learns a model of the likelihood of spotting different objects from each navigable location. The likelihoods are used as rewards in a weighted minimum latency solver to deduce a trajectory for the robot. We evaluate our algorithms in two simulated environments and a real-world setting, to demonstrate high sample efficiency and reliability.


Pile of Law: Learning Responsible Data Filtering from the Law and a 256GB Open-Source Legal Dataset

arXiv.org Artificial Intelligence

Emerging ethical approaches have attempted to filter pretraining material, but such approaches have been ad hoc and failed to take context into account. We offer an approach to filtering grounded in law, which has directly addressed the tradeoffs in filtering material. First, we gather and make available the Pile of Law, a 256GB (and growing) dataset of open-source English-language legal and administrative data, covering court opinions, contracts, administrative rules, and legislative records. Pretraining on the Pile of Law may help with legal tasks that have the promise to improve access to justice. Second, we distill the legal norms that governments have developed to constrain the inclusion of toxic or private content into actionable lessons for researchers and discuss how our dataset reflects these norms. Third, we show how the Pile of Law offers researchers the opportunity to learn such filtering rules directly from the data, providing an exciting new research direction in model-based processing. Warning: this paper contains quotations that may be offensive or upsetting.


Text Representation Enrichment Utilizing Graph based Approaches: Stock Market Technical Analysis Case Study

arXiv.org Artificial Intelligence

Graph neural networks (GNNs) have been utilized for various natural language processing (NLP) tasks lately. The ability to encode corpus-wide features in graph representation made GNN models popular in various tasks such as document classification. One major shortcoming of such models is that they mainly work on homogeneous graphs, while representing text datasets as graphs requires several node types which leads to a heterogeneous schema. In this paper, we propose a transductive hybrid approach composed of an unsupervised node representation learning model followed by a node classification/edge prediction model. The proposed model is capable of processing heterogeneous graphs to produce unified node embeddings which are then utilized for node classification or link prediction as the downstream task. The proposed model is developed to classify stock market technical analysis reports, which to our knowledge is the first work in this domain. Experiments, which are carried away using a constructed dataset, demonstrate the ability of the model in embedding extraction and the downstream tasks.


Segment-based fusion of multi-sensor multi-scale satellite soil moisture retrievals

arXiv.org Artificial Intelligence

Synergetic use of sensors for soil moisture retrieval is attracting considerable interest due to the different advantages of different sensors. Active, passive, and optic data integration could be a comprehensive solution for exploiting the advantages of different sensors aimed at preparing soil moisture maps. Typically, pixel-based methods are used for multi-sensor fusion. Since, different applications need different scales of soil moisture maps, pixel-based approaches are limited for this purpose. Object-based image analysis employing an image object instead of a pixel could help us to meet this need. This paper proposes a segment-based image fusion framework to evaluate the possibility of preparing a multi-scale soil moisture map through integrated Sentinel-1, Sentinel-2, and Soil Moisture Active Passive (SMAP) data. The results confirmed that the proposed methodology was able to improve soil moisture estimation in different scales up to 20% better compared to pixel-based fusion approach.


Artificial Intelligence In RegTech Market Growth Trends 2022 Latest Challenges, Recent Opportunities, Emerging Technologies, Business Share and Size Forecast to 2026 - Digital Journal

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The global Artificial Intelligence In RegTech market study provides precise and high-quality industry size data, together with revenue projections and business geographic landscape. Additionally, it provides the CAGR status, gross margin, and overall growth prospects of the Top Key Players to support business progress- Trulioo, White & Case LLP, QUARULE, INC., Open Source Investor Services, Sysxnet Limited, Silverfinch, Ayasdi, Inc. "Final Report will add the analysis of the impact of COVID-19 on this industry." Global "Artificial Intelligence In RegTech Market" Research 2022 offers valuable insights on latest trends, growing demand in each region, top key players update with regional scope, and growth revenue. The Artificial Intelligence In RegTech market report covers major significant strategies, business developments, competitive landscape analysis and business challenges over the forecast period. The report evaluates various segments and sub-segments of industry which includes industry types, applications and regions.


A.R. Rahman, Shekhar Kapur Talk Metaverse, VR, AI at Goa Festival - Variety A.R. Rahman, Shekhar Kapur Talk Metaverse, VR, AI at Goa Festival – Variety

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Machines can never replace human creativity and technology should be in mankind's service were the biggest takeaways from a heavyweight panel looking to the future of content at the International Film Festival of India, Goa, on Sunday. The panel was devised and led by eminent filmmaker Shekhar Kapur (Red Sea Film Festival opener "What's Love Got to Do with It?"). Participants included Oscar-winning "Slumdog Millionaire" composer A.R. Rahman, Ronald Menzel, co-founder and chief strategy officer at Dreamscape Immersive, with tech maven Pranav Mistry, who was formerly CEO and president of Samsung Technology and Advanced Research, joining via video link. The panelists discussed the concept of the metaverse, which is still in is nascency. Mistry envisaged a future powered by VR, AR and AI where the audience participated in an MCU movie and solved world problems.


AI, AR, Robotics, Blockchain, WTF??!

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Is it possible to make money in the market without doing all the hectic analysis? Why can't I just sit back and let my car drive me around? Would it ever be possible to farm without stepping foot on a farmland? Would I ever be able to have 3D calls/meetings with friends and colleagues? These are questions I've pondered over the past decade or so, and they've consistently stirred my passion for all things tech-related.


An Extreme-Adaptive Time Series Prediction Model Based on Probability-Enhanced LSTM Neural Networks

arXiv.org Artificial Intelligence

Forecasting time series with extreme events has been a challenging and prevalent research topic, especially when the time series data are affected by complicated uncertain factors, such as is the case in hydrologic prediction. Diverse traditional and deep learning models have been applied to discover the nonlinear relationships and recognize the complex patterns in these types of data. However, existing methods usually ignore the negative influence of imbalanced data, or severe events, on model training. Moreover, methods are usually evaluated on a small number of generally well-behaved time series, which does not show their ability to generalize. To tackle these issues, we propose a novel probability-enhanced neural network model, called NEC+, which concurrently learns extreme and normal prediction functions and a way to choose among them via selective back propagation. We evaluate the proposed model on the difficult 3-day ahead hourly water level prediction task applied to 9 reservoirs in California. Experimental results demonstrate that the proposed model significantly outperforms state-of-the-art baselines and exhibits superior generalization ability on data with diverse distributions.


CASPR: Customer Activity Sequence-based Prediction and Representation

arXiv.org Artificial Intelligence

Tasks critical to enterprise profitability, such as customer churn prediction, fraudulent account detection or customer lifetime value estimation, are often tackled by models trained on features engineered from customer data in tabular format. Application-specific feature engineering adds development, operationalization and maintenance costs over time. Recent advances in representation learning present an opportunity to simplify and generalize feature engineering across applications. When applying these advancements to tabular data researchers deal with data heterogeneity, variations in customer engagement history or the sheer volume of enterprise datasets. In this paper, we propose a novel approach to encode tabular data containing customer transactions, purchase history and other interactions into a generic representation of a customer's association with the business. We then evaluate these embeddings as features to train multiple models spanning a variety of applications. CASPR, Customer Activity Sequence-based Prediction and Representation, applies Transformer architecture to encode activity sequences to improve model performance and avoid bespoke feature engineering across applications.


Turning the Tables: Biased, Imbalanced, Dynamic Tabular Datasets for ML Evaluation

arXiv.org Artificial Intelligence

Evaluating new techniques on realistic datasets plays a crucial role in the development of ML research and its broader adoption by practitioners. In recent years, there has been a significant increase of publicly available unstructured data resources for computer vision and NLP tasks. However, tabular data -- which is prevalent in many high-stakes domains -- has been lagging behind. To bridge this gap, we present Bank Account Fraud (BAF), the first publicly available privacy-preserving, large-scale, realistic suite of tabular datasets. The suite was generated by applying state-of-the-art tabular data generation techniques on an anonymized,real-world bank account opening fraud detection dataset. This setting carries a set of challenges that are commonplace in real-world applications, including temporal dynamics and significant class imbalance. Additionally, to allow practitioners to stress test both performance and fairness of ML methods, each dataset variant of BAF contains specific types of data bias. With this resource, we aim to provide the research community with a more realistic, complete, and robust test bed to evaluate novel and existing methods.