Junji Furusho and Ying Jin (December 1st 2009). A 6-DOF Rehabilitation System for Upper Limbs "Robotherapist"and Other Rehabilitation Systems with High Safety, Rehabilitation Engineering, Tan Yen Kheng, IntechOpen, DOI: 10.5772/7381.

Iman Permana Maksum, Ahmad Nabiel, Safri Ishmayana and Ukun M.S. Soedjanaatmadja (May 1st 2020). Safety Aspect of Recombinant Protein Produced by <em>Escherichia coli</em>: Toxin Evaluation with Strain and Genomic Approach [Online First], IntechOpen, DOI: 10.5772/intechopen.92031. 

Dmitry O. Trufanov (June 20th 2018). Socialization from the Point of View of Postnonclassical (Universum) Sociological Theory of Rationality, Socialization - A Multidimensional Perspective, Rosalba Morese, Sara Palermo and Juri Nervo, IntechOpen, DOI: 10.5772/intechopen.74130.

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AAMAS 2020

A Novel Individually Rational Objective In Multi*Agent Multy-Armed Bandits: Algorithms and Regret Bounds

AAMAS is the leading scientific conference for research in autonomous agents and multi-agent systems. The AAMAS conference series was initiated in 2002 as the merging of three respected scientific meetings: the International Conference on Multi-Agent Systems (ICMAS), the International Workshop on Agent Theories, Architectures, and Languages (ATAL), and the International Conference on Autonomous Agents (AA). The aim of the joint conference is to provide a single, high-profile, internationally-respected archival forum for scientific research in the theory and practice of autonomous agents and multi-agent systems.

Browse keynotes, discussions, panels and over 300 presentations.


AAMAS is the leading scientific conference for research in autonomous agents and multi-agent systems. The AAMAS conference series was initiated in 2002 as the merging of three respected scientific meetings: the International Conference on Multi-Agent Systems (ICMAS), the International Workshop on Agent Theories, Architectures, and Languages (ATAL), and the International Conference on Autonomous Agents (AA). 

 **RTSS 2021** has successfully concluded. Hope you have enjoyed it, and look forward to seeing you next year in person.
    Announcement for the Awards:
 * Best Paper Award goes to: Monte Carlo Response-Time Analysis, Sergey Bozhko, Georg von der Brüggen, and Björn Brandenburg
 * Best Student Paper Award goes to: Automatic Energy-Hotspot Detection and Elimination in Real-Time Deeply Embedded Systems, Mohsen Shekarisaz, Lothar Thiele, and Mehdi Kargahi.
 * Best Solution Award for Industry Session goes to: Toward Real-Time Guaranteed Scheduling for Autonomous Driving Systems. Jinghao Sun, Tianyi Wang, Kailu Duan, Bin Lu, Jiankang Ren, Zhishan Guo, and Guozhen Tan.



IEEE RTSS 2021

The IEEE Real-Time Systems Symposium (RTSS) is the premier conference in the field of real-time systems, and is a venue for researchers and practitioners to showcase innovations covering all aspects of real-time systems, including theory, design, analysis, implementation, evaluation, and experience. 

technical paper

Goal reasoning has been attracting much attention in AI recently. Here, we consider how an agent changes its goals as a result of interaction with humans and peers. In particular, we draw upon a model developed in Behavioral Science, the Elementary Pragmatic Model (EPM). We show how the EPM principles can be incorporated into a sophisticated theory of goal change based on the Situation Calculus. The resulting logical theory supports agents with a wide variety of relational styles, including some that we may consider irrational or creative. This lays the foundations for building autonomous agents that interact with humans in a rich and realistic way, as required by advanced Human-AI collaboration applications


Goal Formation through Interaction in the Situation Calculus: A Formal Account Grounded in Behavioral Science

The Chamberlin-Courant (CC) family of committee selection rules aim to select a committee of size $k$ from a set of $m$ candidates to maximize the satisfaction of $n$ agents. The satisfaction of an agent from a committee depends only on the rank of her favorite candidate and is determined by a satisfaction function. Unfortunately, computing an optimal committee of size $k$ is hard in general, which has led to the development of approximation algorithms that select a committee of size $k$, which guarantees some fraction of the optimal satisfaction. However, there is often some flexibility in the size of the committee to be selected.

In this paper, we initiate the study of size-relaxed committee selection for the family of CC rules. Our main results are polynomial-time algorithms to select committees of size at most $k\cdot O(\log n)$, whose satisfaction is guaranteed to be at least that of the optimal committee of size $k$, and show that this is tight. We also provide a constant-factor approximation algorithm for a class of approval ballot based CC rules.


Size-Relaxed Committee Selection under the Chamberlin-Courant Rule

We investigate the representation of game-theoretic measures of network centrality using a framework that blends a social network representation with the formalism of cooperative skill games. We discuss the expressiveness of the new framework and highlight some of its advantages, including a fixed-parameter tractability result for computing centrality measures under such representations. As an application we introduce new network centrality measures that capture the extent to which neighbors of a certain node can help it complete relevant tasks.


It's Not Whom You Know, It's What You (or your friends) Can Do: Coalitional Frameworks for Network Centralities

This talk is about how to design differentially private algorithm in contextual dynamic pricing setting. 


Differentially Private Contextual Dynamic Pricing

In many practical scenarios, a population is divided into disjoint groups for better administration, such as electorates into political districts and students into school districts. However, grouping people arbitrarily may lead to biased partitions, raising concerns of gerrymandering in political districting and racial segregation in schools. To counter such issues, in this paper, we conceptualize such problems in a voting scenario, and given an initial grouping, we propose the Fair Regrouping problem to redistribute a given set of people into k groups, where each person has a preferred alternative and a set of groups they can be moved to, such that the maximum margin of victory of any group is minimized. We also propose the Fair Connected Regrouping problem which additionally requires the people within each group to be connected. We show that the Fair Regrouping problem is NP-complete for plurality voting even if we have only 3 alternatives, but admits polynomial time algorithms if everyone can be moved to any group. We further show that the Fair Connected Regrouping problem is NP-complete for plurality voting even if we have only 2 alternatives and k = 2. Finally, we propose heuristic algorithms for both problems and show their effectiveness in political districting in the U.K. and in lowering racial segregation in public schools in the U.S.


Minimizing Margin of Victory for  Fair Political and Educational Districting

Controlling recurrent infectious diseases is a vital yet complicated problem. A large portion of the controlling epidemic relies on patients visit clinics voluntarily. However, they may already transmit the disease to their contacts by the time they feel sick enough to visit the clinic, especially for conditions with a long incubation period. Therefore, active screening/case finding was deployed to provide a powerful yet expensive means to control disease spread in recent years. To make active screening success a given limit budget, one of the challenges that need to be addressed is that we do not know the exact state of each patient. Given the number of horizon and budget we have in each time step, we also need to plan our screening efficiently and screening the vital patients in time. Thus, we apply a reinforcement learning approach to solve active screening problems on the network SIS disease model. The first contribution of this work is that we identify three significant challenges in active screening problems: partially observable states, combinatorial action choice, high-dimensional state-action space. We further propose the corresponding solutions to overcome these challenges. Specifically, we resolve the issue of high-dimensional state-action space by encoding the actions and partially observable states into a lower dimension form, which is done by either manually, using domain expertise, or automatically, using the state of the art GCN approach. We show that our approach can scale up to large graphs and perform decently compared to other baselines of previous literature and current practice.

Who and When to Screen: Multi-Round Active Screening for Recurrent Infectious Diseases Under Uncertainty

How should one combine noisy information from diverse sources to make an inference about an objective ground truth? This frequently recurring, normative question lies at the core of statistics, machine learning, policy-making, and everyday life. It has been called "combining forecasts", "meta-analysis", "ensembling", and the "MLE approach to voting", among other names. Past studies typically assume that noisy votes are identically and independently distributed (i.i.d.), but this assumption is often unrealistic. Instead, we assume that votes are independent but not necessarily identically distributed and that our ensembling algorithm has access to certain auxiliary information related to the underlying model governing the noise in each vote. In our present work, we: (1) define our problem and argue that it reflects common and socially relevant real world scenarios, (2) propose a multi-arm bandit noise model and count-based auxiliary information set, (3) derive maximum likelihood aggregation rules for ranked and cardinal votes under our noise model, (4) propose, alternatively, to learn an aggregation rule using an order-invariant neural network, and (5) empirically compare our rules to common voting rules and naive experience-weighted modifications. We find that our rules successfully use auxiliary information to outperform the naive baselines.


Objective Social Choice

A serious challenge when finding influential actors in real-world social networks, to enable efficient community-wide interventions, is the lack of knowledge about the structure of the underlying network. Current state-of-the-art methods rely on hand-crafted sampling algorithms; these methods sample nodes and their neighbours in a carefully constructed order and choose opinion leaders from this discovered network to maximize influence spread in the(unknown) complete network.
In this work, we propose a reinforcement learning framework to discover effective network sampling heuristics by leveraging automatically learnt node and graph representations that encode important structural properties of the network. At training time, the method identifies portions of the network such that the nodes selected from this sampled subgraph can effectively influence nodes in the complete network. The output of this training is a transferable, adaptive policy that identifies an effective sequence of nodes to query on unseen graphs. The success of this policy is underpinned by a set of careful choices for embedding local and global information about the graph and providing appropriate reward signals during training. We experiment with real-world social networks from four different domains and show that the policies learned by our RL agent provide a 7-23% improvement over the current state-of-the-art method


Influence maximization in unknown social networks: Learning Policies for Effective Graph Sampling : Policies for Effective Graph Sampling

Function approximation is a powerful approach for structuring large decision problems that has facilitated great achievements in the areas of reinforcement learning and game playing. Regression counterfactual regret minimization (RCFR) is a simple algorithm for approximately solving imperfect information games with normalized rectified linear unit (ReLU) parameterized policies. In contrast, the more conventional softmax parameterization is standard in the field of reinforcement learning and yields a regret bound with a better dependence on the number of actions. We derive approximation error-aware regret bounds for $(\Phi, f)$-regret matching, which applies to a general class of link functions and regret objectives. These bounds recover a tighter bound for RCFR and provide a theoretical justification for RCFR implementations with alternative policy parameterizations ($f$-RCFR), including softmax. We provide exploitability bounds for $f$-RCFR with the polynomial and exponential link functions in zero-sum imperfect information games and examine empirically how the link function interacts with the severity of the approximation. We find that the previously studied ReLU parameterization performs better when the approximation error is small while the softmax parameterization can perform better when the approximation error is large.


A Novel Individually Rational Objective In Multi*Agent Multy-Armed Bandits: Algorithms and Regret Bounds

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Goal Formation through Interaction in the Situation Calculus: A Formal Account Grounded in Behavioral Science

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A Novel Individually Rational Objective In Multi*Agent Multy-Armed Bandits: Algorithms and Regret Bounds

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Next from AAMAS 2020

Goal Formation through Interaction in the Situation Calculus: A Formal Account Grounded in Behavioral Science

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AI Meets Real-Time: Addressing Real-World Complexities in Graph Response-Time Analysis

Stay up to date with the latest Underline news!

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