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Personalized Music Recommendation in a Mobile Environment 移动环境下的个性化音乐推荐
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536946
Claus Schabetsberger, M. Schedl
Addressing the spiraling amount of music and video consumption via streaming services, in particular on mobile devices, we present a music player application for the Android platform, which employs a hybrid approach to generate a list of track recommendations for a user. We propose and evaluate two different algorithms, namely a content-based algorithm and an approach that exploits social similarity. While the former is based on rhythm features, the latter exploits "related videos" relations from YouTube. We show via a user questionnaire that recommendation results based on content slightly, but statistically significantly, outperform the social approach. Given that full audio content is not available immediately in a streaming environment, however, we suggest a hybrid, dynamic approach to music recommendation. Playlists are created as a linear, user-adjustable mixture of both content and social similarity. They are offered to the user via an Android application dubbed "Beat Commander". Besides displaying the results of the playlist generation approach as text, the player features a dynamic visualization of the playlist, using a version of Sammon's mapping.
通过流媒体服务,特别是在移动设备上,解决了音乐和视频消费的螺旋式增长,我们提出了一个Android平台的音乐播放器应用程序,它采用混合方法为用户生成曲目推荐列表。我们提出并评估了两种不同的算法,即基于内容的算法和利用社会相似性的方法。前者基于节奏特征,后者则利用了YouTube上的“相关视频”关系。我们通过用户问卷显示,基于内容的推荐结果略微优于社交方法,但在统计上显著。然而,考虑到在流媒体环境中无法立即获得完整的音频内容,我们建议采用混合的动态方法进行音乐推荐。播放列表是一个线性的、用户可调整的内容和社会相似性的混合体。它们通过一款名为“Beat Commander”的安卓应用程序提供给用户。除了将播放列表生成方法的结果显示为文本外,该播放器还使用Sammon的映射版本来显示播放列表的动态可视化。
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引用次数: 1
Fingerprint Verification through Cloud Computing 基于云计算的指纹验证
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536902
F. Noor, M. Alhaisoni
In this paper, we implement a Parallel Distributed Phase Correlation algorithm for fingerprint verification through Cloud computing services. The algorithm is proposed to be hosted by Cloud Computing Services with Quality of Service (QoS) and Quality of Protection (QoP). We also propose 128-bit encryption for security and privacy of individuals' fingerprints and the Wavelet Scalar Quantization (WSQ) compression method. Fingerprint scanners from various manufactures have different specifications in image capture size, etc. Standards need to be set on the specifications, for image size, for storage, for transmission, for interoperability of various verification algorithms, and protection.
本文通过云计算服务实现了一种用于指纹验证的并行分布式相位相关算法。该算法由具有服务质量(QoS)和保护质量(QoP)的云计算服务托管。我们还提出了128位个人指纹安全和隐私加密和小波标量量化(WSQ)压缩方法。不同厂家的指纹扫描仪在图像捕获尺寸等方面有不同的规格。需要在规范、图像大小、存储、传输、各种验证算法的互操作性和保护等方面设置标准。
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引用次数: 1
Dynamic Compressive Tracking 动态压缩跟踪
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536883
Ting Chen, Yanning Zhang, Tao Yang, H. Sahli
Real-Time Compressive Tracking utilizes a very spare measurement matrix to extract the features for the appearance model. Such model performs well when the tracked objects are well defined. However, when the objects are low-grain, low-resolution, or small, a fixed size sparse measurement matrix is not sufficient enough to preserve the image structure of the object. In this work, we propose a Dynamic Compressive Tracking algorithm that employs adaptive random projections that preserve the image structure of the objects during tracking. The proposed tracker uses a dynamic importance ranking weight to evaluate the classification results obtained by each of the sparse measurement matrices and complete the tracking with the optimal sparse matrix. Extensive experimental results, on challenging publicly available data sets, shows that the proposed dynamic compressible tracking algorithm outperforms conventional compressive tracker.
实时压缩跟踪利用一个非常空闲的测量矩阵来提取外观模型的特征。当跟踪对象定义良好时,该模型表现良好。然而,当目标是低粒度、低分辨率或较小时,固定尺寸的稀疏测量矩阵不足以保持目标的图像结构。在这项工作中,我们提出了一种动态压缩跟踪算法,该算法采用自适应随机投影,在跟踪过程中保持物体的图像结构。该跟踪器采用动态重要性排序权值对每个稀疏度量矩阵得到的分类结果进行评价,并利用最优稀疏矩阵完成跟踪。在具有挑战性的公开可用数据集上进行的大量实验结果表明,所提出的动态可压缩跟踪算法优于传统的压缩跟踪算法。
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引用次数: 4
Energy-Aware Adaptation of Educational Multimedia in Mobile Learning 移动学习中教育多媒体的能量感知适应
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536896
Asim Jalal, Nicholas Gibbins, D. Millard, B. Al-Hashimi, Naif R. Aljohani
As a result of tremendous enhancements in the capabilities of mobile devices and availability of higher data rate mobile internet, the use of online multimedia learning resources on mobile devices is increasingly becoming popular. Limited Battery Power of mobile devices, however, is still one big challenge in Mobile Learning. High Quality multimedia learning resources are power hungry and if used on mobile devices drain battery power rapidly limiting learning opportunities on the move. Lack of significant improvements in battery capacities has resulted in significant interest in battery power saving techniques. Existing power-saving streaming multimedia adaptation techniques tend to extend battery life by reducing quality of multimedia making them susceptible to information loss. This loss may affect the learning content efficacy and jeopardizes the learning process. To the best of our knowledge, no previous work has considered the learning content efficacy in multimedia streaming adaptation mechanism. In this paper, we present MoBELearn system, which is a prototype implementation of our proposed Content Aware Power Saving Educational Multimedia Adaptation (CAPS-EMA) approach. We demonstrate battery efficiency in educational multimedia streaming while keeping the adapted resource suitable for learning. We also describe our semantic metamodel for educational multimedia resource that support our energy efficient adaptation technique.
由于移动设备功能的显著增强和更高数据速率的移动互联网的可用性,在移动设备上使用在线多媒体学习资源越来越受欢迎。然而,移动设备的电池电量有限仍然是移动学习的一大挑战。高质量的多媒体学习资源非常耗电,如果在移动设备上使用,会迅速耗尽电池电量,限制了移动中的学习机会。电池容量缺乏显著的改进导致了对电池节能技术的极大兴趣。现有的节能流媒体适应技术往往通过降低多媒体质量来延长电池寿命,使其容易受到信息丢失的影响。这种损失可能会影响学习内容的有效性,危害学习过程。据我们所知,目前还没有研究在多媒体流适应机制中考虑学习内容的有效性。在本文中,我们提出了MoBELearn系统,这是我们提出的内容感知节能教育多媒体适应(CAPS-EMA)方法的原型实现。我们演示了教育多媒体流媒体的电池效率,同时保持适应的资源适合学习。我们还描述了支持我们的节能自适应技术的教育多媒体资源语义元模型。
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引用次数: 4
A System for Real-Time High-Level Geo-Information Extraction and Fusion for Geocoded Photos 地理编码照片的实时高级地理信息提取与融合系统
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536888
Andrew Ennis, Liming Luke Chen, C. Nugent, G. Ioannidis, Alexandru Stan
Improvements and portability of technologies and smart devices has enabled rapid growth in the amount of user generated media such as photographs and videos. Whilst various media generation and management systems exist it still remains a challenge to discover the "right" metadata information for the right purpose. This paper describes an approach to extract relevant geospatial information through reverse geocoding in addition to cross-referencing several public geospatial data sources. The extracted geospatial information can be used to enable enrichment of media with rich semantic geo-metadata and therefore enable improved organisation and searching of the media. Central to the system is the cross-referencing and data fusion of several public geospatial datasets to determine the most relevant Points of Interest and extract their relevant features. These relevant Points of Interest and features are subsequently used to annotate media with human readable information, leading to enriched media repositories. The system has been implemented as a client/server architecture, with a web interface for the client front end and Java for the backend server side processing. Details of the implementation are discussed. Testing in a scenario has been undertaken and a discussion of the testing technique and results is presented. The initial results show the system to be effective at fusing several public geospatial datasets and extracting relevant geo-metadata.
技术和智能设备的改进和可移植性使得用户生成的媒体(如照片和视频)数量迅速增长。虽然存在各种媒体生成和管理系统,但为正确的目的发现“正确”的元数据信息仍然是一个挑战。在交叉引用多个公共地理空间数据源的基础上,提出了一种通过反向地理编码提取相关地理空间信息的方法。提取的地理空间信息可用于使用丰富的语义地理元数据来丰富媒体,从而改进媒体的组织和搜索。该系统的核心是对多个公共地理空间数据集进行交叉引用和数据融合,以确定最相关的兴趣点并提取其相关特征。这些相关的兴趣点和特性随后被用来用人类可读的信息注释媒体,从而形成丰富的媒体存储库。该系统采用客户端/服务器架构,客户端前端采用web界面,后端服务器端采用Java处理。讨论了实现的细节。在一个场景中进行了测试,并对测试技术和结果进行了讨论。初步结果表明,该系统能够有效地融合多个公共地理空间数据集并提取相关地理元数据。
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引用次数: 4
Range Face Segmentation: Face Detection and Segmentation for Authentication in Mobile Device Range Images 范围人脸分割:移动设备范围图像中身份验证的人脸检测和分割
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536880
R. Findling, Fabian Wenny, Clemens Holzmann, R. Mayrhofer
Face detection (finding faces of different perspectives in images) is an important task as prerequisite to face recognition. This is especially difficult in the mobile domain, as bad image quality and illumination conditions lead to overall reduced face detection rates. Background information still present in segmented faces and unequally normalized faces further decrease face recognition rates. We present a novel approach to robust single upright face detection and segmentation from different perspectives based on range information (pixel values corresponding to the camera-object distance). We use range template matching for finding the face's coarse position and gradient vector flow (GVF) snakes for precisely segmenting faces. We further evaluate our approach on range faces from the u'smile face database, then perform face recognition using the segmented faces to evaluate and compare our approach with previous research. Results indicate that range template matching might be a good approach to finding a single face; in our tests we achieved an error free detection rate and average recognition rates above 98%/96% for color/range images.
人脸检测(在图像中发现不同角度的人脸)是人脸识别的重要前提。这在移动领域尤其困难,因为糟糕的图像质量和照明条件会导致整体人脸检测率降低。分割后的人脸和不均匀归一化后的人脸仍然存在背景信息,进一步降低了人脸识别率。我们提出了一种基于距离信息(对应于相机与目标距离的像素值)的不同角度的鲁棒单直立人脸检测和分割方法。我们使用距离模板匹配来寻找人脸的粗糙位置,使用梯度向量流(GVF)蛇形来精确分割人脸。我们在u’smile人脸数据库中进一步评估我们的方法,然后使用分割的人脸进行人脸识别,并将我们的方法与之前的研究进行评估和比较。结果表明,距离模板匹配可能是寻找单个人脸的好方法;在我们的测试中,我们实现了无错误检测率和平均识别率98%/96%以上的彩色/范围图像。
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引用次数: 1
An Approach for Dynamic Personal Monitoring based on Mobile Complex Event Processing 一种基于移动复杂事件处理的动态个人监控方法
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536866
Yongchun Xu, N. Stojanović, Ljiljana Stojanović, Dusan Kostic
In this paper we present a novel approach for dynamic remote activity monitoring based on mobile complex event processing that has been used in a use case in the eHealth domain. Using complex event processing (CEP) in mobile environment enables a more flexible and efficient processing of personal sensor data and environment data, which are detected by sensors embedded in a mobile device. The main advantages of our approach are: an efficient combination of the mobile and server-side event processing through the semantic event model, optimal usage of mobile resources through dynamic management of mobile event processing and modelling of complex situations by using more expressive knowledge representation formalism. We present the settings for the use case and the results from the preliminary evaluation.
在本文中,我们提出了一种基于移动复杂事件处理的动态远程活动监控的新方法,该方法已在电子健康领域的一个用例中使用。在移动环境中使用复杂事件处理(CEP)可以更灵活、更高效地处理个人传感器数据和环境数据,这些数据由嵌入在移动设备中的传感器检测到。我们的方法的主要优点是:通过语义事件模型将移动和服务器端事件处理有效地结合起来,通过动态管理移动事件处理来优化移动资源的使用,以及通过使用更具表现力的知识表示形式来建模复杂情况。我们给出了用例的设置和初步评估的结果。
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引用次数: 4
Can Smartphone Users Turn Off Tracking Service Settings? 智能手机用户可以关闭跟踪服务设置吗?
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536864
Veelasha Moonsamy, L. Batten, Malcolm Shore
Tracking services play a fundamental role in the smartphone ecosystem. While their primary purpose is to provide a smartphone user with the ability to regulate the extent of sharing private information with external parties, these services can also be misused by advertisers in order to boost revenues. In this paper, we investigate tracking services on the Android and iOS smartphone platforms. We present a simple and effective way to monitor traffic generated by tracking services to and from the smartphone and external servers. To evaluate our work, we dynamically execute a set of Android and iOS applications, collected from their respective official markets. Our empirical results indicate that even if the user disables or limits tracking services on the smartphone, applications can by-pass those settings and, consequently, leak private information to external parties. On the other hand, when testing the location 'on' setting, we notice that generally location is not tracked.
追踪服务在智能手机生态系统中扮演着至关重要的角色。虽然它们的主要目的是为智能手机用户提供调节与外部各方共享私人信息的程度的能力,但这些服务也可能被广告商滥用,以提高收入。在本文中,我们研究了Android和iOS智能手机平台上的跟踪服务。我们提出了一种简单而有效的方法,通过跟踪智能手机和外部服务器之间的服务来监控流量。为了评估我们的工作,我们动态执行了一组从各自官方市场收集的Android和iOS应用程序。我们的实证结果表明,即使用户禁用或限制智能手机上的跟踪服务,应用程序也可以绕过这些设置,从而将私人信息泄露给外部方。另一方面,当测试位置“开启”设置时,我们注意到通常位置不会被跟踪。
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引用次数: 4
Using Planning with Action Preference in Story Generation 在故事生成中使用计划和行动偏好
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536924
Xiaobo Li, S. Paracha, Jiao Wu, O. Yoshie
Nowadays, plenty of researches focus on story generation which is widely used in computer games, education and training applications. It is highly desirable that the generated story should afford high user agency and at same time having capabilities to address user's interventions. In this paper, we apply planning, which is derived from artificial intelligence, to achieve this objective. With the use of planning, several solutions are produced, which contains a sequence of user's and system agents' actions. In addition, we propose the concept of Action Preference, which takes into account user's feedbacks, to evaluate all of the solutions after planning. Meanwhile a variant of hyperbolic tangent is utilized to calculate Action Preference. In order to evaluate its feasibility, an educational game was implemented on the basis of story generation. That result proves that planning with Action Preference is an effective approach in story generation.
故事生成在电脑游戏、教育培训等领域有着广泛的应用,是目前研究的热点。生成的故事应该能够提供较高的用户代理,同时具有解决用户干预的能力,这是非常可取的。在本文中,我们应用规划,这是源自人工智能,以实现这一目标。通过使用计划,可以生成若干解决方案,其中包含一系列用户和系统代理的操作。此外,我们提出了Action Preference的概念,它考虑了用户的反馈,在规划后评估所有的解决方案。同时利用双曲正切的一种变体来计算动作偏好。为了评估其可行性,在故事生成的基础上实现了一款教育类游戏。结果表明,基于行动偏好的故事生成方法是一种有效的故事生成方法。
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引用次数: 2
Monitoring activity of patients with bipolar disorder using smart phones 使用智能手机监测双相情感障碍患者的活动
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536882
V. Osmani, Alban Maxhuni, Agnes Grünerbl, P. Lukowicz, C. Haring, O. Mayora-Ibarra
Mobile computing is changing the landscape of clinical monitoring and self-monitoring. One of the major impacts will be in healthcare, where increase in number of sensing modalities is providing more and more information on the state of overall wellbeing, behaviour and health. There are numerous applications of mobile computing that range from wellbeing applications, such as physical fitness, stress or burnout up to applications that target mental disorders including bipolar disorder. Use of information provided by mobile computing devices can track the state of the subjects and also allow for experience sampling in order to gather subjective information. This paper reports on the results obtained from a medical trial with monitoring of bipolar disorder patients and how the episodes of the diseases correlate to the analysis of the data sampled from mobile phone acting as a monitoring device.
移动计算正在改变临床监测和自我监测的格局。其中一个主要影响将出现在医疗保健领域,在这一领域,传感方式数量的增加正在提供越来越多关于总体福祉、行为和健康状况的信息。移动计算有许多应用,从健康应用,如身体健康、压力或倦怠,到针对精神障碍的应用,包括双相情感障碍。使用由移动计算设备提供的信息可以跟踪受试者的状态,并且还允许进行经验抽样,以便收集主观信息。本文报告了从监测双相情感障碍患者的医学试验中获得的结果,以及这些疾病的发作如何与从作为监测设备的移动电话取样的数据分析相关联。
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引用次数: 81
期刊
Advances in Mobile Multimedia
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