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Modeling Social Group Communication with Multi-Agent Imitation Learning

arXiv.org Artificial Intelligence

In crowded social scenarios with a myriad of external stimuli, human brains exhibit a natural ability to filter out irrelevant information and narrowly focus their attention. In the midst of multiple groups of people, humans use such sensory gating to effectively further their own group's interactional goals. In this work, we consider the design of a policy network to model multi-group multi-person communication. Our policy takes as input the state of the world such as an agent's gaze direction, body pose of other agents or history of past actions, and outputs an optimal action such as speaking, listening or responding (communication modes). Inspired by humans' natural neurobiological filtering process, a central component of our policy network design is an information gating function, termed the Kinesic-Proxemic-Message Gate (KPM-Gate), that models the ability of an agent to selectively gather information from specific neighboring agents. The degree of influence of a neighbor is based on dynamic non-verbal cues such as body motion, head pose (kinesics) and interpersonal space (proxemics). We further show that the KPM-Gate can be used to discover social groups using its natural interpretation as a social attention mechanism. We pose the communication policy learning problem as a multi-agent imitation learning problem. We learn a single policy shared by all agents under the assumption of a decentralized Markov decision process. We term our policy network as the Multi-Agent Group Discovery and Communication Mode Network (MAGDAM network), as it learns social group structure in addition to the dynamics of group communication. Our experimental validation on both synthetic and real world data shows that our model is able to both discover social group structure and learn an accurate multi-agent communication policy.


Optimistic Adaptive Acceleration for Optimization

arXiv.org Machine Learning

We consider a new variant of \textsc{AMSGrad}. AMSGrad \cite{RKK18} is a popular adaptive gradient based optimization algorithm that is widely used in training deep neural networks. Our new variant of the algorithm assumes that mini-batch gradients in consecutive iterations have some underlying structure, which makes the gradients sequentially predictable. By exploiting the predictability and some ideas from the field of \textsc{Optimistic Online learning}, the new algorithm can accelerate the convergence and enjoy a tighter regret bound. We conduct experiments on training various neural networks on several datasets to show that the proposed method speeds up the convergence in practice.


A Beginner's Guide to Learn Machine Learning with Python in 2019

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Machine learning is one of the hottest new technologies to emerge into popular consciousness in the last decade, transforming fields from consumer electronics and healthcare to retail. This has led to intense curiosity about this field among many students and working professionals about the field. Simply put, machine learning is a set of statistical techniques and algorithms designed to find and use structure and patterns in data to make interesting predictions or provide cool insights. If you're a tech professional such as a software developer, business analyst or even a product manager, you might be curious about how machine learning can change the way you work and take your career to the next level. As a beginner, you may be looking for a way to get a solid understanding of machine learning that's not only rigorous and practical, but also concise and fast.


Global Artificial Intelligence Market 2023: Analysis To The Upcoming Prospects Over The World with CAGR of 47.77%. โ€“ The West Tribune

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Global Artificial Intelligence Market research is provided on major factors such as consumer needs and changes observed in them over time, Market Sales in terms of Value and Volume, Emerging Opportunities, Market Growth Trends, Factors Driving this Market, threats associated with them and market performance of Key Vendors along with Key Regions. This research will help you out to determine how the market will evolve, to make confident decisions to capture new opportunities. The insights of Market over past 5 years and a forecast until 2023 is provided. Report also contains a comprehensive market and vendor landscape in addition to a SWOT analysis of the key vendors. Industry experts project Artificial Intelligence market to grow at a CAGR of 47.77% during the period 2018-2023.


4 Reasons Why Your Machine Learning Code is Probably Bad

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Instead of linearly chaining functions, data science code is better written as a set of tasks with dependencies between them. That is your data science workflow should be a DAG. Below is a stylized example of a machine learning flow which is expressed as a DAG. In the end you just need to run TaskTrain() and it will automatically know which dependencies to run. Writing machine learning code as a linear series of functions likely creates many workflow problems.


Google, Amazon, Microsoft: How do their free machine-learning courses compare?

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Machine-learning engineer was the fastest growing job category in the five years to 2017, according to LinkedIn. But tech's hottest role isn't a simple field to break into, requiring at least high school math and some programming knowledge, even to get started. Luckily there are an increasing number of options for those wanting to get a grounding in the field, with Amazon Web Services (AWS) being the latest tech giant to release a set of machine-learning courses for free. That's in addition to the existing well-regarded material available online from the likes of fast.ai and Andrew Ng and Coursera. If you're interested in these courses, it's worth noting that you'll benefit more if you have a basic knowledge of Python and high school linear algebra, statistics, and calculus.


Kids in hospital to send little robot to school in their place

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Children who are in hospital in Bristol are to take part in a trial scheme which would see them send a robot to school in their place while they are off sick. The Bristol Hospital Education Services arrange for children in hospital or being cared for at home for extended periods to continue their education - but that's often a challenge, and can lead to the child missing too much education and missing out on important social interaction with their friends at school. Now, the service has been named as one of just a few across the country to sign up to a new initiative, which will see'telepresence robots' given to 90 children to effectively take their place at their regular school, while the child can watch what the robot sees and speak through it, from their hospital bed or from home. The project won a half million pound bid to trial the idea, which those behind the initiative hope will mean young people are able to continue their education from home, and keep in touch with their friends too. "The project, in partnership with No Isolation, aims to support the education of children suffering from long-term physical and mental illness through the introduction of AV1 robots, which would enable the children to virtually attend school, socialise with classmates and remain connected to their home schools and communities," a spokesperson said.


Never Let This AI Talent Walk Out the Door

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As mentioned before, it is beneficial for AI teams to stay up-to-date on the most current technology advancements within their industry. Aside from providing your staff with the research, you could also offer to pay for continuing education. With the willingness to learn new tech, your team will stay on the cutting edge of emerging tech and stay ahead of the curve with your competition. There are online courses and training that offer AI-related certifications. These classes will keep workers on top of their game by increasing their knowledge in a variety of areas.


The Role of Artificial Intelligence (AI) in Adaptive eLearning System (AES) Content Formation: Risks and Opportunities involved

arXiv.org Artificial Intelligence

Artificial Intelligence (AI) plays varying roles in supporting both existing and emerging technologies. In the area of Learning and Tutoring, it plays key role in Intelligent Tutoring Systems (ITS). The fusion of ITS with Adaptive Hypermedia and Multimedia (AHAM) form the backbone of Adaptive eLearning Systems (AES) which provides personalized experiences to learners. This experience is important because it facilitates the accurate delivery of the learning modules in specific to the learner capacity and readiness. AES types vary, with Adaptive Web Based eLearning Systems (AWBES) being the popular type because of wider access offered by the web technology.The retrieval and aggregation of contents for any eLearning system is critical whichis determined by the relevance of learning material to the needs of the learner.In this paper, we discuss components of AES, role of AI in AES content aggregation, possible risks and available opportunities.


Artificial Intelligence with TensorFlow and Keras Online Course The Data Incubator

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The Data Incubator recently teamed up with MRINetwork to increase its access to hiring partnerships worldwide. MRINetwork is comprised of over 1,500 search professionals who specialize in hundreds of industries, many of whom came from the industries in which they now recruit. The addition of MRINetwork, and its network of existing clients, will add thousands of hiring partners on top of TDI's existing 300 hiring partnerships. As the need for data scientists has increased exponentially over the past few years, MRI provides TDI students with immediate access to new data science positions in geographies worldwide, as well as greater access to companies with a fundamental need for the data science talent required to harness the power of their data.