Data clustering is an important data mining technology that plays a crucial role in numerous scientific applications. However, it challenging due to the size of datasets has been growing rapidly extra-large scale real world. Meanwhile, MapReduce desirable parallel programming platform widely applied kinds process fields. In this paper, we propose efficient density-based algorithm and implement by 4-stages paradigm. Furthermore, adopt quick partitioning strategy for large non-indexed data. We...

As a leading cause of severe disability and death, stroke places an enormous burden on Chinese society. A nationwide screening platform called CSDC (China Stoke Data Center) has been built to support the national prevention program clinical research since 2011. This is composed data integration system big analysis system. The used collect information risk factors, diagnosis history, treatment, sociodemographic characteristics patients' EMR. decision making control prevention, evaluation...

High-dimensional similarity join (HDSJ) is critical for many novel applications in the domain of mobile data management. Nowadays, performing HDSJs efficiently faces two challenges. First, scale datasets increasing rapidly, making parallel computing on a scalable platform must. Second, dimensionality can be up to hundreds or even thousands, which brings about issue curse. In this paper, we address these challenges and study how perform MapReduce paradigm. Particularly, propose cost model...

It is usually of great importance to identify modal parameters for dynamic analysis and vibration control civil structures. Unlike the cases in many other fields such as mechanical engineering where input excitation a system may be well quantified, those are commonly characterized by unknown external forces. During last two decades, stochastic subspace identification (SSI) method has been developed an advanced technique which driven output-only records. This combines theory identification,...

As more and individuals have multiple computing devices, how to maintain the consistency of user files stored on devices becomes a challenge. Cloud-based file synchronization services (FSS), e.g., Drop box iFolder, are promising approaches. However, we haven't seen any public documents discussing protocol, which plays vital role in FSS. This paper focuses maintaining We define new abstraction layer called view, describes all their metadata sync-folder. propose view based protocol with...

Query expansion (QE) has been widely used in electronic medical record (EMR) retrieval for assisted diagnosis and clinical research.However, existing QE algorithms haven't achieved satisfactory performance Chinese EMR retrieval, one noticeable problem is that the weights of terms scores have unreasonable factors lack solid consideration needs.Here we propose an algorithm by improving term scores.First, are assigned with semantic similarities, category co-occurrence frequencies between...

It is necessary to check the actual implementation of clinical guidelines, which provide best practices for therapy stroke patients. Based on rules extracted from guidelines diagnosis and treatment ischemic stroke, we abstracted relationship medical events using declarative process mining framework, constructed de jure model manually. To verify proposed method, a real-life data set hospital checked analyzed with process. The results show that manually generated can discover abnormal...

Along with the rapid growth of heterogeneous cloud services and network technologies, more mobile devices use storage to enlarge capacity share data in our daily lives. We commonly service clients a straight forward fashion, since we may easily obtain most client-side software from many providers. However, when users participate services, difficulty increases manage these efficiently conveniently. In this paper design implement novel cloud-oriented file service, Wukong, which provides...

To enable smart transportation, a large volume of vehicular GPS trajectory data has been collected in the metropolitan-scale Shanghai Grid project. The raw data, however, suffers from various errors. Thus, it is inappropriate to use dataset directly for many potential transportation applications. Map matching, process align onto corresponding road network, commonly used technique calibrate data. In practice, there no ground truth validate calibrated It necessary and desirable have evaluate...

With the character of high incidence, prevalence and mortality, stroke has brought a heavy burden to families society in China. In 2009, Ministry Health China launched national screening intervention program, which screens risk factors conducts high-risk population interventions for people aged over 40 years old all this include hypertension, diabetes, dyslipidemia, atrial fibrillation, smoking, lack exercise, apparently overweight or obese family history stroke. People with more than two...

Many emerging mobile applications require analyzing large spatial datasets. In these applications, efficient query processing relies on access methods such as R-trees. For datasets that are fairly static, R-trees often built a data loading process using packing techniques. However, traditional R-tree algorithms can only run single machine and thereby cannot scale to very this paper, we design implement general framework for parallel Rtree MapReduce. This sequentially packs each level from...

This paper introduces an extensible distributed file system framework, YaFS, using heterogeneous online storage services as its back-ends. It provides a configurable solution for simplifying the usage of multiple resources and accessing data ubiquitously safely. YaFS is POSIX compliant, so that it could support most existing applications seamlessly. An offline mode used to cope with challenged unreliable network environment. We implement abstraction layer plug-in mechanism uniformly...

With the increasing of health awareness, users become more and interested in their daily information healthcare activities results from organizations. They always try to collect them together for better usage. Traditionally, data is delivered by paper format organizations, it not easy convenient usage management. would have translate these on digital version which probably introduce mistakes into data. It be necessary if there a secure method electronic transferring between However, security...

Standardized terminology is the prerequisite of data exchange in analysis clinical processes. However, from different electronic health record systems are based on idiosyncratic systems, especially when hospitals and healthcare organizations. Terminology standardization necessary for medical analysis. We propose a crowdsourcing-based mapping method, CrowdMapping, to standardize data. CrowdMapping uses confidential model determine how terminologies mapped standard system, like ICD-10. The...

HL7 electronic health record system (EHRS) functional model is an international standard which gives scientific instructions for EHRS design and implementation. It has the features of technological irrelevancy, requirement hierarchy comprehensiveness. composed overarching, care provision, provision support, administrative population infrastructure trusted infrastructure. This paper describes functionalities each section in detail. To apply this model, history Chinese information construction...

The techniques of information retrieval eliminate the difficulty finding specific in electronic medical records (EMR), and methods query expansion (QE) improve recall EMR retrieval. However, most existing QE can't get high-quality terms corresponding weights for Chinese because low-quality sources improper calculation methods. In this paper, we propose a novel algorithm term selection weight assignment based on clinical needs unique characteristics terms. first selects from high quality...

Cloud services has been proposed and provided by many research industry groups for the mobile devices. However, challenging issues arise in using such systems It is always difficult to manage with high usability keep resource cost low. In this paper, we propose Somersault (SCloud) provide a system not only performance, but also low consumption client side provides devices an unified entry multiple heterogeneous backend cloud services. To make applications transparently access resources,...

With the success of cloud, more and services provide cloud space for users. For accessibility, convenience free cost, users start to backup their data on so that can be accessed at any place time. However, compared increasing user size, capacity are always limited. In this paper, we propose Compress, an file system, transparently compress before it is stored onto enlarge capability storing without incurring extra fee. Compress temporarily caches in local pushes compressed remote service via...