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Unmanned Aerial Vehicle Control Through Domain-based Automatic Speech Recognition

arXiv.org Artificial Intelligence

Currently, unmanned aerial vehicles, such as drones, are becoming a part of our lives and reaching out to many areas of society, including the industrialized world. A common alternative to control the movements and actions of the drone is through unwired tactile interfaces, for which different remote control devices can be found. However, control through such devices is not a natural, human-like communication interface, which sometimes is difficult to master for some users. In this work, we present a domain-based speech recognition architecture to effectively control an unmanned aerial vehicle such as a drone. The drone control is performed using a more natural, human-like way to communicate the instructions. Moreover, we implement an algorithm for command interpretation using both Spanish and English languages, as well as to control the movements of the drone in a simulated domestic environment. The conducted experiments involve participants giving voice commands to the drone in both languages in order to compare the effectiveness of each of them, considering the mother tongue of the participants in the experiment. Additionally, different levels of distortion have been applied to the voice commands in order to test the proposed approach when facing noisy input signals. The obtained results show that the unmanned aerial vehicle is capable of interpreting user voice instructions achieving an improvement in speech-to-action recognition for both languages when using phoneme matching in comparison to only using the cloud-based algorithm without domain-based instructions. Using raw audio inputs, the cloud-based approach achieves 74.81% and 97.04% accuracy for English and Spanish instructions respectively, whereas using our phoneme matching approach the results are improved achieving 93.33% and 100.00% accuracy for English and Spanish languages.


Artificial Intelligence helps counter COVID-19 misinformation in โ€“ IAM Network

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CAIRO: With most credible information on COVID-19 and its symptoms supplied in English, Arabic-speaking populations have faced a significant barrier, falling prey to hysterical and inaccurate social media posts that come from questionable sources. This urgent and potentially life-threatening problem was quickly identified by the team at DxWand, an Egyptian startup providing conversational artificial intelligence (AI) solutions -- and they sought a fast and effective fix for it. "In late February, we, as a team, were struggling to find credible information about COVID-19, and we found that one needs certain access to find credible information," said Ahmed Mahmoud, co-founder of DxWand. "That made us think about others who would find it challenging to make a distinction between credible and false information. Even on official websites it was sometimes hard to find an answer to a specific question. Or worse -- you would get your information from social media."


Impact of Covid-19 on USA Machine Learning in Communication Market 2020-2025

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The market research report on the global USA Machine Learning in Communication industry provides a comprehensive study of the various techniques and materials used in the production of USA Machine Learning in Communication market products. Starting from industry chain analysis to cost structure analysis, the report analyzes multiple aspects, including the production and end-use segments of the USA Machine Learning in Communication market products. The latest trends in the pharmaceutical industry have been detailed in the report to measure their impact on the production of USA Machine Learning in Communication market products. This report comes along with an added Excel data-sheet suite taking quantitative data from all numeric forecasts presented in the report. Research Methodology: The USA Machine Learning in Communication market has been analyzed using an optimum mix of secondary sources and benchmark methodology besides a unique blend of primary insights.


QED: A Framework and Dataset for Explanations in Question Answering

arXiv.org Artificial Intelligence

A question answering system that in addition to providing an answer provides an explanation of the reasoning that leads to that answer has potential advantages in terms of debuggability, extensibility and trust. To this end, we propose QED, a linguistically informed, extensible framework for explanations in question answering. A QED explanation specifies the relationship between a question and answer according to formal semantic notions such as referential equality, sentencehood, and entailment. We describe and publicly release an expert-annotated dataset of QED explanations built upon a subset of the Google Natural Questions dataset, and report baseline models on two tasks -- post-hoc explanation generation given an answer, and joint question answering and explanation generation. In the joint setting, a promising result suggests that training on a relatively small amount of QED data can improve question answering. In addition to describing the formal, language-theoretic motivations for the QED approach, we describe a large user study showing that the presence of QED explanations significantly improves the ability of untrained raters to spot errors made by a strong neural QA baseline.


CONDA-PM -- A Systematic Review and Framework for Concept Drift Analysis in Process Mining

arXiv.org Artificial Intelligence

Business processes evolve over time to adapt to changing business environments. This requires continuous monitoring of business processes to gain insights into whether they conform to the intended design or deviate from it. The situation when a business process changes while being analysed is denoted as Concept Drift. Its analysis is concerned with studying how a business process changes, in terms of detecting and localising changes and studying the effects of the latter. Concept drift analysis is crucial to enable early detection and management of changes, that is, whether to promote a change to become part of an improved process, or to reject the change and make decisions to mitigate its effects. Despite its importance, there exists no comprehensive framework for analysing concept drift types, affected process perspectives, and granularity levels of a business process. This article proposes the CONcept Drift Analysis in Process Mining (CONDA-PM) framework describing phases and requirements of a concept drift analysis approach. CONDA-PM was derived from a Systematic Literature Review (SLR) of current approaches analysing concept drift. We apply the CONDA-PM framework on current approaches to concept drift analysis and evaluate their maturity. Applying CONDA-PM framework highlights areas where research is needed to complement existing efforts.


Multilinear Latent Conditioning for Generating Unseen Attribute Combinations

arXiv.org Machine Learning

Deep generative models rely on their inductive bias to facilitate generalization, especially for problems with high dimensional data, like images. However, empirical studies have shown that variational autoencoders (VAE) and generative adversarial networks (GAN) lack the generalization ability that occurs naturally in human perception. For example, humans can visualize a woman smiling after only seeing a smiling man. On the contrary, the standard conditional VAE (cVAE) is unable to generate unseen attribute combinations. To this end, we extend cVAE by introducing a multilinear latent conditioning framework that captures the multiplicative interactions between the attributes. We implement two variants of our model and demonstrate their efficacy on MNIST, Fashion-MNIST and CelebA. Altogether, we design a novel conditioning framework that can be used with any architecture to synthesize unseen attribute combinations.


Bayesian Inverse Reinforcement Learning for Collective Animal Movement

arXiv.org Machine Learning

Agent-based methods allow for defining simple rules that generate complex group behaviors. The governing rules of such models are typically set a priori and parameters are tuned from observed behavior trajectories. Instead of making simplifying assumptions across all anticipated scenarios, inverse reinforcement learning provides inference on the short-term (local) rules governing long term behavior policies by using properties of a Markov decision process. We use the computationally efficient linearly-solvable Markov decision process to learn the local rules governing collective movement for a simulation of the self propelled-particle (SPP) model and a data application for a captive guppy population. The estimation of the behavioral decision costs is done in a Bayesian framework with basis function smoothing. We recover the true costs in the SPP simulation and find the guppies value collective movement more than targeted movement toward shelter.


Deep Learning and Reinforcement Learning for Autonomous Unmanned Aerial Systems: Roadmap for Theory to Deployment

arXiv.org Machine Learning

Unmanned Aerial Systems (UAS) are being increasingly deployed for commercial, civilian, and military applications. The current UAS state-of-the-art still depends on a remote human controller with robust wireless links to perform several of these applications. The lack of autonomy restricts the domains of application and tasks for which a UAS can be deployed. Enabling autonomy and intelligence to the UAS will help overcome this hurdle and expand its use improving safety and efficiency. The exponential increase in computing resources and the availability of large amount of data in this digital era has led to the resurgence of machine learning from its last winter. Therefore, in this chapter, we discuss how some of the advances in machine learning, specifically deep learning and reinforcement learning can be leveraged to develop next-generation autonomous UAS. We first begin motivating this chapter by discussing the application, challenges, and opportunities of the current UAS in the introductory section. We then provide an overview of some of the key deep learning and reinforcement learning techniques discussed throughout this chapter. A key area of focus that will be essential to enable autonomy to UAS is computer vision. Accordingly, we discuss how deep learning approaches have been used to accomplish some of the basic tasks that contribute to providing UAS autonomy. Then we discuss how reinforcement learning is explored for using this information to provide autonomous control and navigation for UAS. Next, we provide the reader with directions to choose appropriate simulation suites and hardware platforms that will help to rapidly prototype novel machine learning based solutions for UAS. We additionally discuss the open problems and challenges pertaining to each aspect of developing autonomous UAS solutions to shine light on potential research areas.


Central University of Technology introduces Artificial Intelligence university programme in partnership with Microsoft, Free State Government, Gijima

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Central University of Technology, South Africa, is introducing an Artificial Intelligence university programme powered by Microsoft. To firstly skill employees with the in-demand skill and secondly address the demand for the skill in the province and South Africa in general. The Artificial Intelligence university programme is developed by Microsoft and will be delivered by Microsoft Partner Gijima. The initiative is also in partnership with the Free State Provincial Government. It will comprise of a 12-month blended learning model of self-study, online learning, classroom instructor-led training and a flipped classroom.


Africa is at the AI innovation table and 'ready for the next wave'

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Africa is on the rise. Mobile and Internet penetration continue to rise, according to the latest ITU data. The continent's entrepreneurs are taking advantage of this growth in connectivity, leading to a rapid growth of tech hubs across the continent in recent years, fueling fresh innovation. But as the world moves deeper into the Fourth Industrial Revolution, what is next for Africa, especially regarding Artificial Intelligence (AI)? "AI happens in Africa!" said Alex Tsado, Co-Founder and Board Chair at Alliance4ai, during the recent AI-driving digital divide and the future of African economies AI for Good webinar.