SPE
Neural Consciousness Flow
Xu, Xiaoran, Feng, Wei, Sun, Zhiqing, Deng, Zhi-Hong
The ability of reasoning beyond data fitting is substantial to deep learning systems in order to make a leap forward towards artificial general intelligence. A lot of efforts have been made to model neural-based reasoning as an iterative decision-making process based on recurrent networks and reinforcement learning. Instead, inspired by the consciousness prior proposed by Yoshua Bengio, we explore reasoning with the notion of attentive awareness from a cognitive perspective, and formulate it in the form of attentive message passing on graphs, called neural consciousness flow (NeuCFlow). Aiming to bridge the gap between deep learning systems and reasoning, we propose an attentive computation framework with a three-layer architecture, which consists of an unconsciousness flow layer, a consciousness flow layer, and an attention flow layer. We implement the NeuCFlow model with graph neural networks (GNNs) and conditional transition matrices. Our attentive computation greatly reduces the complexity of vanilla GNN-based methods, capable of running on large-scale graphs. We validate our model for knowledge graph reasoning by solving a series of knowledge base completion (KBC) tasks. The experimental results show NeuCFlow significantly outperforms previous state-of-the-art KBC methods, including the embedding-based and the path-based. The reproducible code can be found by the link below.
A Review of Deep Learning with Special Emphasis on Architectures, Applications and Recent Trends
Sengupta, Saptarshi, Basak, Sanchita, Saikia, Pallabi, Paul, Sayak, Tsalavoutis, Vasilios, Atiah, Frederick, Ravi, Vadlamani, Peters, Alan
Deep learning (DL) has solved a problem that as little as five years ago was thought by many to be intractable - the automatic recognition of patterns in data; and it can do so with accuracy that often surpasses human beings. It has solved problems beyond the realm of traditional, hand-crafted machine learning algorithms and captured the imagination of practitioners trying to make sense out of the flood of data that now inundates our society. As public awareness of the efficacy of DL increases so does the desire to make use of it. But even for highly trained professionals it can be daunting to approach the rapidly increasing body of knowledge produced by experts in the field. Where does one start? How does one determine if a particular model is applicable to their problem? How does one train and deploy such a network? A primer on the subject can be a good place to start. With that in mind, we present an overview of some of the key multilayer ANNs that comprise DL. We also discuss some new automatic architecture optimization protocols that use multi-agent approaches. Further, since guaranteeing system uptime is becoming critical to many computer applications, we include a section on using neural networks for fault detection and subsequent mitigation. This is followed by an exploratory survey of several application areas where DL has emerged as a game-changing technology: anomalous behavior detection in financial applications or in financial time-series forecasting, predictive and prescriptive analytics, medical image processing and analysis and power systems research. The thrust of this review is to outline emerging areas of application-oriented research within the DL community as well as to provide a reference to researchers seeking to use it in their work for what it does best: statistical pattern recognition with unparalleled learning capacity with the ability to scale with information.
Relational Representation Learning for Dynamic (Knowledge) Graphs: A Survey
Kazemi, Seyed Mehran, Goel, Rishab, Jain, Kshitij, Kobyzev, Ivan, Sethi, Akshay, Forsyth, Peter, Poupart, Pascal
Graphs arise naturally in many real-world applications including social networks, recommender systems, ontologies, biology, and computational finance. Traditionally, machine learning models for graphs have been mostly designed for static graphs. However, many applications involve evolving graphs. This introduces important challenges for learning and inference since nodes, attributes, and edges change over time. In this survey, we review the recent advances in representation learning for dynamic graphs, including dynamic knowledge graphs. We describe existing models from an encoder-decoder perspective, categorize these encoders and decoders based on the techniques they employ, and analyze the approaches in each category. We also review several prominent applications and widely used datasets, and highlight directions for future research.
Visual Analytics of Anomalous User Behaviors: A Survey
Shi, Yang, Liu, Yuyin, Tong, Hanghang, He, Jingrui, Yan, Gang, Cao, Nan
The increasing accessibility of data provides substantial opportunities for understanding user behaviors. Unearthing anomalies in user behaviors is of particular importance as it helps signal harmful incidents such as network intrusions, terrorist activities, and financial frauds. Many visual analytics methods have been proposed to help understand user behavior-related data in various application domains. In this work, we survey the state of art in visual analytics of anomalous user behaviors and classify them into four categories including social interaction, travel, network communication, and transaction. We further examine the research works in each category in terms of data types, anomaly detection techniques, and visualization techniques, and interaction methods. Finally, we discuss the findings and potential research directions.
Robots are coming to a hospital near you
Hospitals and medical practices are already using a fair amount of automation. Some hospitals are set up for delivery robots to open remote-control doors and even use elevators to get around the building. Robots can also assist with more complex tasks, like surgery. Their participation can range from simply helping stabilize a surgeon's tools all the way to autonomously performing the entire procedure. Perhaps the most famous robotic surgery system lets a surgeon operate full-size, ergonomically friendly equipment as a remote control to direct extremely tiny instruments what to do inside a patient's body, often through extremely small incisions.
Survey on Evaluation Methods for Dialogue Systems
Deriu, Jan, Rodrigo, Alvaro, Otegi, Arantxa, Echegoyen, Guillermo, Rosset, Sophie, Agirre, Eneko, Cieliebak, Mark
In this paper we survey the methods and concepts developed for the evaluation of dialogue systems. Evaluation is a crucial part during the development process. Often, dialogue systems are evaluated by means of human evaluations and questionnaires. However, this tends to be very cost and time intensive. Thus, much work has been put into finding methods, which allow to reduce the involvement of human labour. In this survey, we present the main concepts and methods. For this, we differentiate between the various classes of dialogue systems (task-oriented dialogue systems, conversational dialogue systems, and question-answering dialogue systems). We cover each class by introducing the main technologies developed for the dialogue systems and then by presenting the evaluation methods regarding this class.
Impact of Artificial Intelligence on Businesses: from Research, Innovation, Market Deployment to Future Shifts in Business Models
Soni, Neha, Sharma, Enakshi Khular, Singh, Narotam, Kapoor, Amita
The fast pace of artificial intelligence (AI) and automation is propelling strategists to reshape their business models. This is fostering the integration of AI in the business processes but the consequences of this adoption are underexplored and need attention. This paper focuses on the overall impact of AI on businesses - from research, innovation, market deployment to future shifts in business models. To access this overall impact, we design a three-dimensional research model, based upon the Neo-Schumpeterian economics and its three forces viz. innovation, knowledge, and entrepreneurship. The first dimension deals with research and innovation in AI. In the second dimension, we explore the influence of AI on the global market and the strategic objectives of the businesses and finally, the third dimension examines how AI is shaping business contexts. Additionally, the paper explores AI implications on actors and its dark sides.
Beyond Personalization: Research Directions in Multistakeholder Recommendation
Abdollahpouri, Himan, Adomavicius, Gediminas, Burke, Robin, Guy, Ido, Jannach, Dietmar, Kamishima, Toshihiro, Krasnodebski, Jan, Pizzato, Luiz
Recommender systems are personalized information access applications; they are ubiquitous in today's online environment, and effective at finding items that meet user needs and tastes. As the reach of recommender systems has extended, it has become apparent that the single-minded focus on the user common to academic research has obscured other important aspects of recommendation outcomes. Properties such as fairness, balance, profitability, and reciprocity are not captured by typical metrics for recommender system evaluation. The concept of multistakeholder recommendation has emerged as a unifying framework for describing and understanding recommendation settings where the end user is not the sole focus. This article describes the origins of multistakeholder recommendation, and the landscape of system designs. It provides illustrative examples of current research, as well as outlining open questions and research directions for the field.
Algorithms and Autonomous Discovery
More than a decade ago, Ichiro Takeuchi, professor of materials science and engineering, started applying the subfield of artificial intelligence (AI) known as machine learning (ML) to help develop new magnetic materials. At the time, ML was not widely used in materials science. "Now, it's all the rage," says Takeuchi, who also holds an appointment with the Maryland Energy Innovation Institute. Its current popularity is due in part to the deep learning revolution of 2012 and related advances in computer chip speed, data storage options, and rapid refinement of the science that drives its predictive analytics of algorithms. ML-based discovery in materials science is not just a lab exercise.
Facebook's AI extracts playable characters from real-world videos
Using these and combined pose data, Pose2Frame separates between character-dependent changes in the scene like shadows, held items, and reflections and those that are character-independent, and returns a pair of outputs that are linearly blended with any desired background. To train the AI system, the researchers sourced three videos, each between five and eight minutes long, of a tennis player outdoors, a person swinging a sword indoors, and a person walking. Compared with a neural network model fed three-minute video of a dancer, they report that their approach managed to successfully field dynamic elements, such as other people and differences in camera angle, in addition to variations in character clothing and camera angle. "Each network addresses a computational problem not previously fully met, together paving the way for the generation of video games with realistic graphics," they wrote. "In addition, controllable characters extracted from YouTube-like videos can find their place in the virtual worlds and augmented realities." Facebook isn't the only company investigating AI systems that might aid in game design. Startup Promethean AI employs machine learning to help human artists create art for video games, and Nvidia researchers recently demonstrated a generative model that can create virtual environments using video snippets. Machine learning has also been used to rescue old game textures in retro titles like Final Fantasy VII and The Legend of Zelda: Twilight Princess, and to generate thousands of levels in games like Doom from scratch.