Nash Equilibrium of a Fixed-Sum Two-Player Game

It is well established that Nash equilibrium exists within the framework of mixed strategies in strategic-form non-cooperative games. However, finding the Nash equilibrium generally belongs to the class of problems known as PPAD (Polynomial Parity Argument on Directed graphs), for which no polynomial-time solution methods are known, even for two-player games. This paper demonstrates that in fixed-sum two-player games (including zero-sum games), the Nash equilibrium forms a convex set, and has a unique expected payoff. Furthermore, these equilibria are Pareto optimal. Additionally, it is shown that the Nash equilibrium of fixed-sum two-player games can theoretically be found in polynomial time using the principal-dual interior point method, a solution method of linear programming.

Research on the Space Construction of the Novel Ready Player One

The novel Ready Player One shows Ernest Cline’s ability of space construction,and demonstrates charm and artistic value of the virtual fantasy space it depicts.It is a science fiction with perfect combination of ideological content and artistic form.This thesis aims to discuss the Ernest Cline’s construction of the virtual pace and the real space in Ready Player One and the function of their construction.In real space,the environment is awful and dilapidated,and people’s lives are depressed.While in the virtual space,the world is colorful and people have varied ways of entertainment to fulfill their mind.This Thesis summarizes the effects brought by both the real space and virtual space for Ready Player One.With such a strong contrast,the conflict between the two spaces promotes the narrative process and also highlights the theme of the novel.

Web服务器与Player的通信机制研究

移动机器人远程控制具有良好的应用前景,其核心问题之一就是操作者与机器人之间的通信,实现数据的有效传输、交换、解析、存储等.提出了一种W eb技术和机器人网络服务器P layer相结合的3层通信框架,实现了W eb服务器与P layer服务器间的通信.利用这种通信机制建立的基于W eb的移动机器人远程监控系统具有良好的可重构、可扩展,可以扩展支持多用户的协同操作和多机器人的协同工作.

An Automated Player Detection and Tracking in Basketball Game

Vision-based player recognition is critical in sports applications.Accuracy,efficiency,and Low memory utilization is alluring for ongoing errands,for example,astute communicates and occasion classification.We developed an algorithm that tracks the movements of different players from a video of a basketball game.With their position tracked,we then proceed to map the position of these players onto an image of a basketball court.The purpose of tracking player is to provide the maximum amount of information to basketball coaches and organizations,so that they can better design mechanisms of defence and attack.Overall,our model has a high degree of identification and tracking of the players in the court.We directed investigations on soccer,basketball,ice hockey and pedestrian datasets.The trial comes about an exhibit that our technique can precisely recognize players under testing conditions.Contrasted and CNNs that are adjusted from general question identification systems,for example,Faster-RCNN,our approach accomplishes cutting edge exactness on three sorts of recreations(basketball,soccer and ice hockey)with 1000×fewer parameters.The all-inclusive statement of our technique is additionally shown on a standard passer-by recognition dataset in which our strategy accomplishes aggressive execution contrasted and cutting-edge methods.

Direct3D Player性能优化

Direct3D(以下简称D3D)Player是测试显卡驱动所必须的工具软件,其设计并没有考虑到性能,渲染一帧画面通常需要很长时间,给显卡驱动程序的开发带来不便。提出针对D3D Player的性能优化方法,从其运行的机制上研究如何提高其性能,将其分成脚本编译子系统和编译后目标代码执行子系统,最后实现一个优化的D3D Player,并以3D MARK 2001-2005的若干个测试用例来测试D3D Player的优化效果,并比较优化前后的性能变化。

Multi-Modal Data Analysis Based Game Player Experience Modeling Using LSTM-DNN

Game player modeling is a paradigm of computational models to exploit players’behavior and experience using game and player analytics.Player modeling refers to descriptions of players based on frameworks of data derived from the interaction of a player’s behavior within the game as well as the player’s experience with the game.Player behavior focuses on dynamic and static information gathered at the time of gameplay.Player experience concerns the association of the human player during gameplay,which is based on cognitive and affective physiological measurements collected from sensors mounted on the player’s body or in the player’s surroundings.In this paper,player experience modeling is studied based on the board puzzle game“Candy Crush Saga”using cognitive data of players accessed by physiological and peripheral devices.Long Short-Term Memory-based Deep Neural Network(LSTM-DNN)is used to predict players’effective states in terms of valence,arousal,dominance,and liking by employing the concept of transfer learning.Transfer learning focuses on gaining knowledge while solving one problem and using the same knowledge to solve different but related problems.The homogeneous transfer learning approach has not been implemented in the game domain before,and this novel study opens a new research area for the game industry where the main challenge is predicting the significance of innovative games for entertainment and players’engagement.Relevant not only from a player’s point of view,it is also a benchmark study for game developers who have been facing problems of“cold start”for innovative games that strengthen the game industrial economy.

Windows Media Player SDK剖析与应用研究

本文对微软公司的媒体播放器Windows Media Player提供的SDK进行深入的剖析,比较系统地分析了该SDK的各个组成部分,并给出了利用该SDK进行二次开发的思路。本文同时给出了该SDK几个较为典型应用的操作步骤。

Data Comparison between Elite and Amateur Soccer Players by 20 Hz GPS Data Collection

The athletic component in football is nowadays one of the most important factor to determinate the performance. This consideration is part of our study, which aims to evaluate and quantify the difference between the workload of an amateur footballer and an elite one. All this is allowed by match analysis made by GPS evaluation method for amateur and video tracking for elite. The examined teams were playing in 7th Italian league, and we used 10 GPS to track 6 games, 5 for each team. For every team and every game were analysed a forward, a central midfielder, a wide midfielder, a central defender and a full back （Age 25.3 ＋ 4.2, Weight 74.5 Kg a： 5.3, Height 1.76 cm ＋ 5.2）. In our study, we used a 20 Hz GPS （thanks to Advanced Research Group in Sport, School of Health and Sport Science with K-Sport Universal, Italy） to detect performance data, and then we compared the outcome with matches performance data from elite players gather from scientific literature. Data analysis shows that elite players reach higher values in almost all parameters taken into account. In particular, they obtained higher value in meters per minutes, High Speed Distance （〉 16 Km/h）, High Metabolic Power Distance （〉 20 W/Kg） and in high and very high and acceleration （2 m/s, 3 m/s, 〉 3 m/s） and deceleration （-2 m/s, -3 m/s, 〉 -3 m/s）. This study can be useful to select and catalogue player performance model, in order to better understand the real value of a player, and to help coaches and teams to identify talent, at least in physical values.

使用Windows Media Player控件在PowerPoint2007中播放音、视频

针对PowerPoint在音、视频方面无法添加多个曲目和有效控制其播放的局限性,通过对PowerPoint提供的VBA和Windows Media Player控件的深入研究,利用Windows Media Player控件的特性,运用简单的编程和界面设计,给出了在PowerPoint2007中对音、视频实现曲目灵活播放和控制的方法。

Neusoft Media Player的设计与实现

多媒体播放器是人们平时娱乐的一个重要内容。随着时代的进步,信息化逐渐变得越来越重要。如何管理好用户平时娱乐收藏的媒体文件,从而达到娱乐、工作两不误,已经成为日常生活中的一个大问题。在这种情况下,拥有一个可以规范化、现代化、多样化的多媒体播放器就显得非常必要。虽然目前国内外关于多媒体播放器的软件很多,但其种类都比较繁杂,而且多数都致力于专门的一种功能,并不能满足用户的实际需求,缺乏一定的多样性。下面介绍的Neusoft Media Player可以很好地解决以上问题,本系统具有音频播放、视频播放和图片播放三种基本功能,综合了三种媒体播放器,从本质上实现了播放器的多样性,另外,除了基本功能之外,还具备最近播放列表、用户自定义列表、显示媒体文件详细信息、按照不同信息对媒体文件排序等功能,而且进一步完善了三种播放模式之间的互相转换。这不仅取代了传统的媒体播放器的单一性,而且更加符合用户的实际生活需求,给用户的日常生活及娱乐活动带来前所未有的方便。系统采用Microsoft Visual Studio 2010作为前端开发工具,SQL Server 2005作为后台的数据库开发平台。连接数据库采用的是比较流行的ADO技术,主要功能通过各种函数和控件进行实现。

A Violin Player

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DealersChoice是黑客组织Sofacy利用Flash Player漏洞的平台

Palo Alto Networks威胁情报小组Unit 42工程师Robert Falcone和Bryan Lee日前表示,Palo Alto Networks客户可通过以下方式免受DealersChoice文件和Sofacy Carberp有效载荷的攻击:Wildfire检测到的判定为恶意的已知样本;所有已知的C2在PAN-DB中被归类为恶意;Traps能够阻止DealersChoice使用的攻击代码。

基于Player的室内服务机器人的地图构建和定位系统

在开源框架Player平台的基础上搭建了针对室内服务机器人的地图构建和定位系统。首先将DP-SLAM算法移植到Player,离线构建动态地图,以减少人工绘制地图的误差和制约;然后引入一种KLD取样的适应的蒙特卡洛(KLD-AMCL)定位算法,通过计算MLE与真实后验的KL距离,自适应调整所需粒子数;最后结合Player平台、动态地图和KLD-AMCL算法,搭建了针对室内服务机器人的定位系统。实验表明,该系统具有较好的环境适应性和较高的定位精度。

移动影霸——Digital Data Player V-NP3H

川宇公司推出的“移动影霸”(Digltal Data Player V-MP3H)功能十分强大,据有10GB～60GB的海量存储,真是当之无愧的“移动影霸”|其主要功能可概括为:VCD播放、MP3播放、图片浏览和移动存储。有了这个移动影霸,就相当于拥有了便携VCD、MP3播放器,移动硬盘。 这款“移动影霸”带有2.5英寸真彩16色LCD,所以用户可以十分方便地浏览图片和欣赏VCD电影,而且“移动影霸”可以连接电视机和TFT显示器。要是用“移动影霸”来听MP3就方便了。

MSN显示KMPlayer多媒体

自从MSN Messenger 7．0（简称MSN）直接支持Windows Media Player正在播放的信息以来，很多多媒体播放器直接或者间接向MSN发送播放的多媒体信息，《网友世界》各栏目也陆续刊登过相关的应用和技巧文章。现在，KMPlayer也赶上了这辆末班车，可以与MSN好友“分享”播放的多媒体。

Differential game strategy in three-player evasion and pursuit scenarios

A conflict of three players, including an attacker, a defender, and a target with bounded control is discussed based on the differential game theories in which the target and the defender use an optimal pursuit strategy. The current approach chooses the miss distance as the outcome of the conflict. Different optimal guidance laws are investigated, and feasible conditions are analyzed for the attacker to accomplish an attacking task. For some given conditions, the attacker cannot intercept the target by only using a one-to-one optimal pursuit guidance law; thus, a guidance law for the attacker to reach a critical safe value is investigated.Specifically, the guidance law is divided into two parts. Before the engagement time between the defender and the attacker, the attacker uses this derived guidance law to guarantee that the evasion distance from the defender is safe, and that the zero-effort-miss(ZEM) distance between the attacker and the target is the smallest.After that engagement time, the attacker uses the optimal one-toone guidance law to accomplish the pursuit task. The advantages and limited conditions of these derived guidance laws are also investigated by using nonlinear simulations.