Technology
Metropolitan Fixed Assets Change Judgment using Aerial Photographs
Koizumi, Hirokazu (NEC System Technologies, Ltd.) | Yagyu, Hiroyuki (NEC System Technologies, Ltd.) | Hashizume, Kazuaki (NEC System Technologies, Ltd.) | Kamiya, Toshiyuki (NEC System Technologies, Ltd.) | Kunieda, Kazuo (NEC Corporation) | Shimazu, Hideo (NEC System Technologies, Ltd.)
The Tokyo Metropolitan Government is the largest municipality in Japan and conducts building change identification work. Recently, Tokyo terminated its traditional visual identification work that has been in use for 20 years and shifted to a new automated system. This paper is intended to introduce the Fixed Assets Change Judgment (FACJ) system and its core tool, RealScape. RealScape automatically detects the changes in the height and color of buildings based on three-dimensional (3D) analysis of aerial photographs. It employs a unique pixel-by-pixel stereo processing method and enables the foot-level precision for each building. RealScape detects building changes more accurately than visual judgment operations by humans and reduces the labor costs to one third of the traditional approach and the required judgment duration to about two weeks per 100km2.
Q-Strategy: Automated Bidding and Convergence in Computational Markets
Borissov, Nikolay Nikolaev (University of Karlsruhe)
Agents and market mechanisms are widely elaborated and applied to automate interaction and decision processes among others in robotics, for decentralized control in sensor networks and by algorithmic traders in financial markets. Currently there is a high demand of efficient mechanisms for the provisioning, usage and allocation of distributed services in the Cloud. Such mechanisms and processes are not manually manageable and require decisions taken in quasi real-time. Thus agent decisions should automatically adapt to changing conditions and converge to optimal values. This paper presents a bidding strategy, which is capable of automating the bid generation and utility maximization processes of consumers and providers by the interaction with markets as well as to converge to optimal values. The bidding strategy is applied to the consumer side against benchmark bidding strategies and its behavior and convergence are evaluated in two market mechanisms, a centralized and a decentralized one.
Using AI to Solve Inspection Scheduling Problem for a Buying Office
Zhou, Xianhao (Zhongshan (Sun Yat-Sen) University) | Guo, Songshan (Zhongshan (Sun Yat-Sen) University) | Che, Chan Hou (City University of Hong Kong) | Cheang, Brenda (City University of Hong Kong) | Lim, Andrew (City University of Hong Kong) | Kreuter, Hubert (Metro Group Buying Hong Kong) | Chow, Janet (Metro Group Buying Hong Kong)
This paper presents a project awarded by MGB HK to handle their inspection scheduling problem. MGB HK is the buying office of one of the largest retailers in the world, Metro Group. MGB HK handles all product procurement of Metro Group out of Europe. The inspection process is one of their critical processes along their entire procurement exercise. The objective of this project is to provide an effective scheduling engine so that in-house inspectors can handle as many inspections as possible using the least amount of time and costs. Meanwhile, we also help the company overcome their difficulties of data collection and maintenance as a result of the system we developed. Our engine will be deployed and integrated into the companyโs IMS. The engine recorded an improvement in the scheduling of their inspections and initial prognosis indicates that delayed inspections have been greatly reduced by compared with previous schedule. The system can effectively schedule inspections by urgency, shipment value, and supplierโs historical performance. Other than the schedule, the AI engine can also generate solutions based on different strategies and criteria, which facilitate the decision-making process for the scheduling team and management at MGB HK.
A Tool for Measuring the Reality of Technology Trends of Interest
Yeh, Peter Z. (Accenture Technology Labs) | Puri, Colin A. (Accenture Technology Labs)
In this paper, we present a prototype application โ the Technology Trend Tracker โ to measure the reality of technology trends of interest using information on the Web to inform decisions such as when to develop training, when to invest in expertise, and more. This prototype performs this task by integrating several artificial intelligence technologies in an innovative way. These technologies include rich semantic representations, a natural language understanding module, and a flexible semantic matcher. We use our system to augment Accenture's annual technology vision survey and show how our system performs well on measuring the reality of technology trends from this survey. We also show why our system performs well through an ablation study.
Automatic Generation of Personal Chinese Handwriting by Capturing the Characteristics of Personal Handwriting
Xu, Songhua (Yale University) | Jin, Tao (The University of Hong Kong) | Jiang, Hao (The University of Hong Kong) | Lau, Francis C. M. (The University of Hong Kong)
Personal handwritings can add colors to human communication. Handwriting, however, takes more time and is less favored than typing in the digital age. In this paper we propose an intelligent algorithm which can generate imitations of Chinese handwriting by a person requiring only a very small set of training characters written by the person. Our method first decomposes the sample Chinese handwriting characters into a hierarchy of reusable components, called character components. During handwriting generation, the algorithm tries and compares different possible ways to compose the target character. The likeliness of a given personal handwriting generation result is evaluated according to the captured characteristics of the person's handwriting. We then find among all the candidate generation results an optimal one which can maximize a likeliness estimation. Experiment results show that our algorithm works reasonably well in the majority of the cases and sometimes remarkably well, which was verified through comparison with the groundtruth data and by a small scale user survey.
Automated Critique of Sketched Mechanisms
Wetzel, Jon William (Northwestern University) | Forbus, Ken (Northwestern University)
Designers often use a series of sketches to explain how their design goes through different states or modes to achieve its intended function. Learning how to create such explanations turns out to be a difficult problem for engineering students. An automated "crash test dummy" to let students practice explanations would be desirable. This paper describes how to carry out a core piece of the reasoning needed in such system. We show how an open-domain sketch understanding system can be used to enter many aspects of such explanations, and how qualitative mechanics can be used to check the plausibility of the intended state transitions. The system is evaluated using a corpus of sketches based on designs from an engineering school design and communications course.
A Fully Automatic System for Restoration of Historical Document Images
Wang, Jie (National University of Singapore) | Brown, Michael S. (Dr.) | Tan, Chew Lim (Professor)
Historical document images are subject to intrinsic distortions such as background noise and bleed-through interference due to aging and extrinsic distortions such as displacement, uneven surfaces introduced during image acquisition procedure. In this paper, we propose a fully automatic restoration framework that corrects bleed-through distortion on double-sided handwritten historical document images. First, the two sides of a document are registered with corresponding control points which are selected by inspecting the images' gradient maps and minimizing a predefined dissimilarity measure. The established correspondences are refined by median filters and consistency checking. Piecewise linear mapping function is chosen to represent the spatial relationship between the two images. Based on the estimated transform model, backward re-sampling strategy and bi-cubic spline interpolation are adopted to obtain final registered images. Once the two sides of a page have been registered, enhancement/smearing feature images are extracted and iterative wavelet decomposition/construction is performed to restore the degraded images. Experiments on the real documents from the National Archives of Singapore demonstrate a completely automatic framework to the restoration of historical document images.
Creating Human-like Autonomous Players in Real-time First Person Shooter Computer Games
Wang, Di (Nanyang Technological University) | Subagdja, Budhitama (Nanyang Technological University) | Tan, Ah-Hwee (Nanyang Technological University) | Ng, Gee-Wah (DSO National Laboratories)
This paper illustrates how we create a software agent by employing FALCON, a self-organizing neural network that performs reinforcement learning, to play a well-known first person shooter computer game known as Unreal Tournament 2004. Through interacting with the game environment and its opponents, our agent learns in real-time without any human intervention. Our agent bot participated in the 2K Bot Prize competition, similar to the \emph{Turing test} for intelligent agents, wherein human judges were tasked to identify whether their opponents in the game were human players or virtual agents. To perform well in the competition, an agent must act like human and be able to adapt to some changes made to the game. Although our agent did not emerge top in terms of human-like, the overall performance of our agent was encouraging as it acquired the highest game score while staying convincing to be human-like in some judges' opinions.
Application of the Actor-Critic Architecture to Functional Electrical Stimulation Control of a Human Arm
Thomas, Philip Sebastian (Case Western Reserve University) | Bogert, Antonie van den (Lerner Research Institute) | Jagodnik, Kathleen (Case Western Reserve University) | Branicky, Michael (Case Western Reserve University)
Clinical tests have shown that the dynamics of a human arm, controlled using Functional Electrical Stimulation (FES), can vary significantly between and during trials. In this paper, we study the application of the actor-critic architecture, with neural networks for the both the actor and the critic, as a controller that can adapt to these changing dynamics of a human arm. Development and tests were done in simulation using a planar arm model and Hill-based muscle dynamics. We begin by training it using a Proportional Derivative (PD) controller as a supervisor. We then make clinically relevant changes to the dynamics of the arm and test the actor-critic's ability to adapt without supervision in a reasonable number of episodes. Finally, we devise methods for achieving both rapid learning and long-term stability.
Online Learning of Spacecraft Simulation Models
Thomas, Justin R. (United Space Alliance) | Eick, Christoph F. (University of Houston)
Spacecraft simulation is an integral part of NASA mission planning, real-time mission support, training, and systems engineering. Existing approaches that power these simulations cannot quickly react to the dynamic and complex behavior of the International Space Station (ISS). To address this problem, this paper introduces a unique and efficient method for continuously learning highly accurate models from real-time streaming sensor data, relying on an online learning approach. This approach revolutionizes NASA simulation techniques for space missions by providing models that quickly adapt to real-world feedback without human intervention. A novel regional sliding-window technique for online learning of simulation models is proposed that regionally maintains the most recent data. We also explore a knowledge fusion approach to reduce predictive error spikes when confronted with making predictions in situations that are quite different from training scenarios. We demonstrate substantial error reductions up to 74% in our experimental evaluation on the ISS Electrical Power System and discuss the early deployment of our software in the ISS Mission Control Center (MCC) for ground-based simulations.