South America
Independent watchdog key to monitor artificial intelligence
Independent watchdog key to monitor artificial intelligence Geoff Maslen 01 June 2019 Nations that increasingly use artificial intelligence (AI) devices to assist in decision-making should act immediately and adopt'an independent watchdog' to monitor them for possible risks to the public, according to two senior academics in New Zealand. John Zerilli and Colin Gavaghan have called on their government to establish an independent regulator to monitor "and address the risks associated with these digital technologies". "To protect us from the risks of advanced artificial intelligence, we need to act now," say the two Otago University academics. "The public should know what AI systems their government uses as well as how well they perform. Systems should be regularly evaluated and summary results made available to the public in a systematic format."
Gov't assigns $100K for student trainings on IoT, robotics, entrepreneurship
For the second consecutive year, the Department of Economic Development and Commerce announced the allocation of $100,000 from its Special Economic Development Fund, for 60 young people to participate in the IOTeen Eco Technology and Business Education Project, aimed at training them to master skills related to the Internet of Things (IOT), robotics and entrepreneurship. "For 18 consecutive Saturdays starting in January, these young people will meet at the Engine-4 facilities. This is an excellent opportunity for Puerto Rican youth to create and shape the Smart City that the Engine-4 team has been working on for a while," said Manuel Laboy, Secretary of Economic Development and Commers. He added that the lab's facilities in Bayamón are expanding, following a contribution from the Department of Economic Development, through its Youth Development Program and the municipality of Bayamón. Meanwhile, Roberto Carlos Pagán-Santiago director of the Youth Development Program, said "over time, technology has become an essential part of young people's daily lives. Every day, this field generates more interest among students, who decide to take on a university career focused on this field."
Using artificial intelligence to analyze placentas Penn State University
Placentas can provide critical information about the health of the mother and baby, but only 20 percent of placentas are assessed by pathology exams after delivery in the U.S. The cost, time and expertise required to analyze them are prohibitive. Now, a team of researchers has developed a novel solution that could produce accurate, automated and near-immediate placental diagnostic reports through computerized photographic image analysis. Their research could allow all placentas to be examined, reduce the number of normal placentas sent for full pathological examination and create a less resource-intensive path to analysis for research -- all of which may positively benefit health outcomes for mothers and babies. "The placenta drives everything to do with the pregnancy for the mom and baby, but we're missing placental data on 95 percent of births globally," said Alison Gernand, assistant professor of nutritional sciences in Penn State's College of Health and Human Development. "Creating a more efficient process that requires fewer resources will allow us to gather more comprehensive data to examine how placentas are linked to maternal and fetal health outcomes, and it will help us to examine placentas without special equipment and in minutes rather than days."
Marcelo Lombardo: 'Cloud management software is revolutionising small firms'
Earlier this year, San Francisco-based venture capital firm Riverwood Capital invested US$ 20 million in Omie, a Brazilian start-up that provides small and medium businesses (SMBs) with an AI-powered business management software. Omie's genius idea was to focus on small firms, not served by larger management software services. By automating business functions, the company essentially eliminates the massive amount of paper work required in Brazil, a country notorious for red tape. "Cloud management platforms are revolutionising small and medium businesses in Brazil," says Marcelo Lombardo, Omie's CEO and founder. He spoke with LSE Business Review managing editor Helena Vieira on 5 November during the Web Summit conference in Lisbon. Starting from the beginning, what does Omie do? Omie is a cloud management software for small and midsize businesses. We put together pretty much everything a small business owner needs for his daily life (financials, invoicing, inventory, manufacturing, etc).
SemEval-2017 Task 3: Community Question Answering
Nakov, Preslav, Hoogeveen, Doris, Màrquez, Lluís, Moschitti, Alessandro, Mubarak, Hamdy, Baldwin, Timothy, Verspoor, Karin
We describe SemEval-2017 Task 3 on Community Question Answering. This year, we reran the four subtasks from SemEval-2016:(A) Question-Comment Similarity,(B) Question-Question Similarity,(C) Question-External Comment Similarity, and (D) Rerank the correct answers for a new question in Arabic, providing all the data from 2015 and 2016 for training, and fresh data for testing. Additionally, we added a new subtask E in order to enable experimentation with Multi-domain Question Duplicate Detection in a larger-scale scenario, using StackExchange subforums. A total of 23 teams participated in the task, and submitted a total of 85 runs (36 primary and 49 contrastive) for subtasks A-D. Unfortunately, no teams participated in subtask E. A variety of approaches and features were used by the participating systems to address the different subtasks. The best systems achieved an official score (MAP) of 88.43, 47.22, 15.46, and 61.16 in subtasks A, B, C, and D, respectively. These scores are better than the baselines, especially for subtasks A-C.
Singing Voice Conversion with Disentangled Representations of Singer and Vocal Technique Using Variational Autoencoders
Luo, Yin-Jyun, Hsu, Chin-Chen, Agres, Kat, Herremans, Dorien
We propose a flexible framework that deals with both singer conversion and singers vocal technique conversion. The proposed model is trained on non-parallel corpora, accommodates many-to-many conversion, and leverages recent advances of variational autoencoders. It employs separate encoders to learn disentangled latent representations of singer identity and vocal technique separately, with a joint decoder for reconstruction. Conversion is carried out by simple vector arithmetic in the learned latent spaces. Both a quantitative analysis as well as a visualization of the converted spectrograms show that our model is able to disentangle singer identity and vocal technique and successfully perform conversion of these attributes. To the best of our knowledge, this is the first work to jointly tackle conversion of singer identity and vocal technique based on a deep learning approach.
Computa\c{c}\~ao Urbana da Teoria \`a Pr\'atica: Fundamentos, Aplica\c{c}\~oes e Desafios
Rodrigues, Diego O., Santos, Frances A., Filho, Geraldo P. Rocha, Akabane, Ademar T., Cabral, Raquel, Immich, Roger, Junior, Wellington L., Cunha, Felipe D., Guidoni, Daniel L., Silva, Thiago H., Rosário, Denis, Cerqueira, Eduardo, Loureiro, Antonio A. F., Villas, Leandro A.
The growing of cities has resulted in innumerable technical and managerial challenges for public administrators such as energy consumption, pollution, urban mobility and even supervision of private and public spaces in an appropriate way. Urban Computing emerges as a promising paradigm to solve such challenges, through the extraction of knowledge, from a large amount of heterogeneous data existing in urban space. Moreover, Urban Computing correlates urban sensing, data management, and analysis to provide services that have the potential to improve the quality of life of the citizens of large urban centers. Consider this context, this chapter aims to present the fundamentals of Urban Computing and the steps necessary to develop an application in this area. To achieve this goal, the following questions will be investigated, namely: (i) What are the main research problems of Urban Computing?; (ii) What are the technological challenges for the implementation of services in Urban Computing?; (iii) What are the main methodologies used for the development of services in Urban Computing?; and (iv) What are the representative applications in this field?
Location Forensics of Media Recordings Utilizing Cascaded SVM and Pole-matching Classifiers
Dey, Jayanta, Haque, Mohammad Ariful
Information regarding the location of power distribution grid can be extracted from the power signature embedded in the multimedia signals (e.g., audio, video data) recorded near electrical activities. This implicit mechanism of identifying the origin-of-recording can be a very promising tool for multimedia forensics and security applications. In this work, we have developed a novel grid-of-origin identification system from media recording that consists of a number of support vector machine (SVM) followed by pole-matching (PM) classifiers. First, we determine the nominal frequency of the grid (50 or 60 Hz) based on the spectral observation. Then an SVM classifier, trained for the detection of a grid with a particular nominal frequency, narrows down the list of possible grids on the basis of di ff erent discriminating features extracted from the electric network frequency (ENF) signal. The decision of the SVM classifier is then passed to the PM classifier that detects the final grid based on the minimum distance between the estimated poles of test and training grids. Thus, we start from the problem of classifying grids with di fferent nominal frequencies and simplify the problem of classification in three stages based on nominal frequency, SVM and finally using PM classifier. This cascaded system of classification ensures better accuracy (15 .57% Keywords: Location forensics, ENF, nominal frequency, SVM, AR model, pole-matching classifier. 1. Introduction With the proliferation of terrorism, child pornography [1] or abuse on women, location forensics has become an important area of research in the 21 Success in identifying such locations properly can ease the process of getting hold of the criminals involved.
On the optimality of kernels for high-dimensional clustering
Vankadara, Leena Chennuru, Ghoshdastidar, Debarghya
This paper studies the optimality of kernel methods in high-dimensional data clustering. Recent works have studied the large sample performance of kernel clustering in the high-dimensional regime, where Euclidean distance becomes less informative. However, it is unknown whether popular methods, such as kernel k-means, are optimal in this regime. We consider the problem of high-dimensional Gaussian clustering and show that, with the exponential kernel function, the sufficient conditions for partial recovery of clusters using the NP-hard kernel k-means objective matches the known information-theoretic limit up to a factor of $\sqrt{2}$ for large $k$. It also exactly matches the known upper bounds for the non-kernel setting. We also show that a semi-definite relaxation of the kernel k-means procedure matches up to constant factors, the spectral threshold, below which no polynomial-time algorithm is known to succeed. This is the first work that provides such optimality guarantees for the kernel k-means as well as its convex relaxation. Our proofs demonstrate the utility of the less known polynomial concentration results for random variables with exponentially decaying tails in a higher-order analysis of kernel methods.
Conformance Checking Approximation using Subset Selection and Edit Distance
Sani, Mohammadreza Fani, van Zelst, Sebastiaan J., van der Aalst, Wil M. P.
Conformance checking techniques let us find out to what degree a process model and real execution data correspond to each other. In recent years, alignments have proven extremely useful in calculating conformance statistics. Most techniques to compute alignments provide an exact solution. However, in many applications, it is enough to have an approximation of the conformance value. Specifically, for large event data, the computing time for alignments is considerably long using current techniques which makes them inapplicable in reality. Also, it is no longer feasible to use standard hardware for complex processes. Hence, we need techniques that enable us to obtain fast, and at the same time, accurate approximation of the conformance values. This paper proposes new approximation techniques to compute approximated conformance checking values close to exact solution values in a faster time. Those methods also provide upper and lower bounds for the approximated alignment value. Our experiments on real event data show that it is possible to improve the performance of conformance checking by using the proposed methods compared to using the state-of-the-art alignment approximation technique. Results show that in most of the cases, we provide tight bounds, accurate approximated alignment values, and similar deviation statistics.