Africa
Creating a mental health monitoring system for senior citizens with artificial intelligence
The University of the United Arab Emirates has completed projects of artificial intelligence laboratories that work to create a mental health monitoring system for senior citizens and to contribute to the early detection of incurable brain diseases such as dementia and Alzheimer's disease. The Artificial Intelligence and Robotics Laboratory operates at the University as part of the Fourth Industrial Revolutionary Organization, which follows the University of the United Arab Emirates, by establishing five major laboratories to support the march of the Fourth Industrial Revolution in the country. . Dr. Fadi Al-Najjar, Associate Professor in the Department of Computer Science and Software Engineering and Director of the Laboratory of Artificial Intelligence and Robotics, stressed that the UAE University is keen to accelerate and improve the development of educational technologies. The role of artificial intelligence in modern educational studies and programs seeks to improve project releases and curricula that meet the needs of the country's strategic plans and programs for the next fifty years. He said: The projects of the artificial intelligence laboratories at the university have been completed, creating a psychiatric monitoring system for senior citizens, predicting the future development of their cases, relying on the robot "Abu Chief", designed and developed in the laboratory, and with the technical support of Microsoft in the Middle East.
Language Identification with a Reciprocal Rank Classifier
Language identification is a critical component of language processing pipelines (Jauhiainen et al.,2019) and is not a solved problem in real-world settings. We present a lightweight and effective language identifier that is robust to changes of domain and to the absence of copious training data. The key idea for classification is that the reciprocal of the rank in a frequency table makes an effective additive feature score, hence the term Reciprocal Rank Classifier (RRC). The key finding for language classification is that ranked lists of words and frequencies of characters form a sufficient and robust representation of the regularities of key languages and their orthographies. We test this on two 22-language data sets and demonstrate zero-effort domain adaptation from a Wikipedia training set to a Twitter test set. When trained on Wikipedia but applied to Twitter the macro-averaged F1-score of a conventionally trained SVM classifier drops from 90.9% to 77.7%. By contrast, the macro F1-score of RRC drops only from 93.1% to 90.6%. These classifiers are compared with those from fastText and langid. The RRC performs better than these established systems in most experiments, especially on short Wikipedia texts and Twitter. The RRC classifier can be improved for particular domains and conversational situations by adding words to the ranked lists. Using new terms learned from such conversations, we demonstrate a further 7.9% increase in accuracy of sample message classification, and 1.7% increase for conversation classification. Surprisingly, this made results on Twitter data slightly worse. The RRC classifier is available as an open source Python package (https://github.com/LivePersonInc/lplangid).
Deep Bayesian Estimation for Dynamic Treatment Regimes with a Long Follow-up Time
Lin, Adi, Lu, Jie, Xuan, Junyu, Zhu, Fujin, Zhang, Guangquan
Causal effect estimation for dynamic treatment regimes (DTRs) contributes to sequential decision making. However, censoring and time-dependent confounding under DTRs are challenging as the amount of observational data declines over time due to a reducing sample size but the feature dimension increases over time. Long-term follow-up compounds these challenges. Another challenge is the highly complex relationships between confounders, treatments, and outcomes, which causes the traditional and commonly used linear methods to fail. We combine outcome regression models with treatment models for high dimensional features using uncensored subjects that are small in sample size and we fit deep Bayesian models for outcome regression models to reveal the complex relationships between confounders, treatments, and outcomes. Also, the developed deep Bayesian models can model uncertainty and output the prediction variance which is essential for the safety-aware applications, such as self-driving cars and medical treatment design. The experimental results on medical simulations of HIV treatment show the ability of the proposed method to obtain stable and accurate dynamic causal effect estimation from observational data, especially with long-term follow-up. Our technique provides practical guidance for sequential decision making, and policy-making.
Data Augmentation Methods for Anaphoric Zero Pronouns
Aloraini, Abdulrahman, Poesio, Massimo
In pro-drop language like Arabic, Chinese, Italian, Japanese, Spanish, and many others, unrealized (null) arguments in certain syntactic positions can refer to a previously introduced entity, and are thus called anaphoric zero pronouns. The existing resources for studying anaphoric zero pronoun interpretation are however still limited. In this paper, we use five data augmentation methods to generate and detect anaphoric zero pronouns automatically. We use the augmented data as additional training materials for two anaphoric zero pronoun systems for Arabic. Our experimental results show that data augmentation improves the performance of the two systems, surpassing the state-of-the-art results.
The Case for Claim Difficulty Assessment in Automatic Fact Checking
Singh, Prakhar, Das, Anubrata, Li, Junyi Jessy, Lease, Matthew
Fact-checking is the process (human, automated, or hybrid) by which claims (i.e., purported facts) are evaluated for veracity. In this article, we raise an issue that has received little attention in prior work - that some claims are far more difficult to fact-check than others. We discuss the implications this has for both practical fact-checking and research on automated fact-checking, including task formulation and dataset design. We report a manual analysis undertaken to explore factors underlying varying claim difficulty and categorize several distinct types of difficulty. We argue that prediction of claim difficulty is a missing component of today's automated fact-checking architectures, and we describe how this difficulty prediction task might be split into a set of distinct subtasks.
Automation May Pose A Threat To A Developing Country Like India
Market volatility and rising protectionism in countries like the USA, where much of India's IT outsourcing work comes from, saw Cognizant's revenue grow at its slowest pace in two decades last year, and its peers in the Indian IT industry are in the same boat. Since the 1990s Indian firms have carried out back-office tasks, and IT services like data entry, running call centers, and testing software for foreign companies at cut-price rates by throwing cheap labor at them. But as machines become adept at this repetitive, rule-based work, the low-skill jobs – where the bulk of Indian IT workers are employed – are the most at risk. "It's been happening for the last two or three years in an accelerated fashion," says Gopinathan Padmanabhan, head of innovation at IT company Mphasis. This shift will go hand-in-hand with new opportunities in emerging areas – data science, artificial intelligence, and big data – but these will require new skills and probably fewer employees.
Artificial Intelligence (AI) Market to Hit USD 360.36 Billion by 2028; Surging Innovation in Artificial Internet of Things (AIoT) to Augment Growth: Fortune Business Insights
Pune, India, Sept. 16, 2021 (GLOBE NEWSWIRE) -- The global Artificial Intelligence (AI) market size is expected to gain momentum by reaching USD 360.36 billion by 2028 while exhibiting a CAGR of 33.6% between 2021 to 2028. In its report titled, "Artificial Intelligence (AI) Market Size, Share & COVID-19 Impact Analysis, By Component (Hardware, Software, and Services), By Technology (Computer Vision, Machine Learning, Natural Language Processing, and Others), By Deployment (Cloud, On-premises), By Industry (Healthcare, Retail, IT & Telecom, BFSI, Automotive, Advertising & Media, Manufacturing, and Others), and Regional Forecast, 2021-2028" Fortune Business Insights mentions that the market stood at USD 35.92 billion in 2020. Artificial Intelligence has become immensely popular, and industries across the globe are rapidly incorporating it into their processes to improve business operations and customer experience. Not only the big companies but also the small and medium businesses are investing in this technology. Besides, the advancement and implementation of 5G, cloud computing, and a huge database are the factors, which are propelling its demand.
Should we care about Philosophy of AI in the Mena region?
The artificial intelligence (AI) race between the global powers has countries everywhere hurriedly rummaging up AI applications. A quick glance at magazine headlines, popular culture, and even peer-reviewed academic literature shows the many grand predictions about AI and the eventual winner of its race. But is that race something to be celebrated or feared? And where does the Middle East and North Africa (Mena) region stand? Today, algorithms, deep learning and AI have emerged as unparalleled forces of power and have made their way into the everyday world.
Large-scale Autonomous Flight with Real-time Semantic SLAM under Dense Forest Canopy
Liu, Xu, Nardari, Guilherme V., Ojeda, Fernando Cladera, Tao, Yuezhan, Zhou, Alex, Donnelly, Thomas, Qu, Chao, Chen, Steven W., Romero, Roseli A. F., Taylor, Camillo J., Kumar, Vijay
In this letter, we propose an integrated autonomous flight and semantic SLAM system that can perform long-range missions and real-time semantic mapping in highly cluttered, unstructured, and GPS-denied under-canopy environments. First, tree trunks and ground planes are detected from LIDAR scans. We use a neural network and an instance extraction algorithm to enable semantic segmentation in real time onboard the UAV. Second, detected tree trunk instances are modeled as cylinders and associated across the whole LIDAR sequence. This semantic data association constraints both robot poses as well as trunk landmark models. The output of semantic SLAM is used in state estimation, planning, and control algorithms in real time. The global planner relies on a sparse map to plan the shortest path to the global goal, and the local trajectory planner uses a small but finely discretized robot-centric map to plan a dynamically feasible and collision-free trajectory to the local goal. Both the global path and local trajectory lead to drift-corrected goals, thus helping the UAV execute its mission accurately and safely.
Optimal Ensemble Construction for Multi-Study Prediction with Applications to COVID-19 Excess Mortality Estimation
Loewinger, Gabriel, Nunez, Rolando Acosta, Mazumder, Rahul, Parmigiani, Giovanni
It is increasingly common to encounter prediction tasks in the biomedical sciences for which multiple datasets are available for model training. Common approaches such as pooling datasets and applying standard statistical learning methods can result in poor out-of-study prediction performance when datasets are heterogeneous. Theoretical and applied work has shown $\textit{multi-study ensembling}$ to be a viable alternative that leverages the variability across datasets in a manner that promotes model generalizability. Multi-study ensembling uses a two-stage $\textit{stacking}$ strategy which fits study-specific models and estimates ensemble weights separately. This approach ignores, however, the ensemble properties at the model-fitting stage, potentially resulting in a loss of efficiency. We therefore propose $\textit{optimal ensemble construction}$, an $\textit{all-in-one}$ approach to multi-study stacking whereby we jointly estimate ensemble weights as well as parameters associated with each study-specific model. We prove that limiting cases of our approach yield existing methods such as multi-study stacking and pooling datasets before model fitting. We propose an efficient block coordinate descent algorithm to optimize the proposed loss function. We compare our approach to standard methods by applying it to a multi-country COVID-19 dataset for baseline mortality prediction. We show that when little data is available for a country before the onset of the pandemic, leveraging data from other countries can substantially improve prediction accuracy. Importantly, our approach outperforms multi-study stacking and other standard methods in this application. We further characterize the method's performance in data-driven and other simulations. Our method remains competitive with or outperforms multi-study stacking and other earlier methods across a range of between-study heterogeneity levels.