数据流

The construction of the synopsis is based on Discrete Wavelet Transform and utilizes the amnesic feature of data stream.

利用数据流的遗忘特性，应用离散小波变换，分层、动态地维护每个数据流的概要结构。

In this paper, each of single data stream that is included in data streams has same attributes set as other,the unit of single data stream is tuple,and same attributes set is included in each of these tuples.Reservoir algorithm is used to sample from these single data stream respectively,then some multiple snapshot windows are constructed,the relationship between these single data stream and multiple snapshot windows is bijective mapping,the relationship between attributes that are included in tuple and snapshot windows that are included in relative multiple snapshot windows is bijective mapping,and the relationship between basic windows that belong to same snapshot window and the attribute values that come from different single data stream is bijective mapping as well,that is,these attribute values come from same attribute that is comprised by different single data stream.

针对以元组为单位流入的具有相同属性集的多支单数据流组成的多数据流，提出了分别对每支单数据流进行蓄水池抽样，构造一一对应于各单数据流的若干个多快照窗口，即两者之间是双射关系，可以将多快照窗口串行置于主存中，将元组包含的属性与多快照窗口中的各个快照窗口一一对应，且使得同一快照窗口中的各基本窗口与取自其对应的单数据流的属性值样本一一对应，然后对这些相互独立的样本进行方差分析。

Data stream model is different from traditional database. It has the characteristics of rapidness, real-time, continuousness and boundlessness. Therefore, the algorithms for mining data streams have substantial difference from that of traditional database mining. They are one-pass algorithms.

数据流模型不同于传统的数据库模型，具有快速、实时、连续、无界等特点，由此决定了数据流的查询或挖掘算法与基于传统的数据库的挖掘技术有显著的区别，其算法应是单遍扫描的。

This paper analyses the event semantic and features over data stream and builds an event-driven data stream model EQM.

分析数据流上事件的语义和特点，建立了事件驱动的数据流模型EQM。

We led the density function into the data structure as the weight, and use dense micro-cluster to describe the arbitrary-shaped clusters in data streams. In addition, we propose candidate core-micro-cluster and isolated micro-cluster synopses to maintain and distinguish the potential micro clusters and isolation point in data streams.

我们把密度函数以权值的形式引入数据结构中，并利用核心微簇描述数据流中任意形状的簇，并提出候选核心微簇和孤立微簇结构分别用于维护并区分数据流中潜在的核心簇和孤立点。

In this paper, we mainly analyzed the structure and feature of workflow language, XML Process Definition Language and Business Process Execution Language For Web Services,and then designed a strategy of workflow model interoperation in two aspects, control flow and data flow of workflow. Based on this idea, we developed a transformation algorithm and implemented this transformation by a Java-based open source rule engine named drools.

简要分析了两种类型的工作流语言——XML流程定义语言和商业流程执行语言的语言结构与特点，分别从流程的控制流和数据流设计了工作流模型的互操作方案，提出了把XPDL格式的工作流转换成等效的BPEL格式的工作流的转换算法，最后使用基于Java的开源规则引擎drools工具实现了这个转换。

This paper introduces a telemetric collecting and processing system which can continually collect telemetric data flow at a data rate within 480k bps, accomplish the tasks of data division, engineer- ing unit transformation and real-time data display, and put the data into large external memory in a designed format.

本文介绍的遥测数据采集与处理系统能对码速率在480kb/s以内的遥测数据流进行不间断的采集，并在采集的同时完成数据分路、工程单位转换、实时数据显示等数据处理工作，并将数据按规定格式存入外部海量存储器。

Its execution is based on the principle of dataflow, in which functions execute only after receiving the necessary data.

它执行时是基于数据流原则，所谓的数据流原则就是程序只有在所有的数据都到时才开始执行。

It is used to delimit individual messages within the TCP stream, which itself provides a continuous stream of octets without explicit boundaries.

它被用于区分TCP数据流中的不同消息（PDUs，分组数据单元），这些TCP数据流自身提供连续的字节流却没有显示不同包的边界信息。

To deal with the problems and present situation of field data capture by computer in geological mapping in 20 years, this paper has created PRB digital mapping techniques to standardize the digital mapping process and discussed PRB mapping technique-method system, including PRB digital mapping techniques, the model of PRB data and the related process, combinational regulations of PRB process, common mechanism and basic procedure of PRB process, data processing and dictionary of PRB, three-class PRB system,...

从近 2 0年地质填图中计算机野外数据采集技术研究的现状和存在的问题入手，在确定地质填图空间数据表达的基础上，遵循传统地质填图的规律，在不约束地质学家地质思维的前提下，既能满足计算机处理的需要，又能保证地质工作者取全、取准各项地质观测数据，在描述各类地质信息空间关系的基础上，创建了数字地质填图过程标准化和规范化的PRB数字填图技术，并对构成PRB数字填图技术、PRB数据模型、PRB基本过程、PRB基本过程组合的规则、PRB过程的公共机制、PRB过程基本程式、PRB数据操作、PRB字典、三级PRB体系、PRB数据流&栈&、PRB数据质量定量评价体系的PRB数字填图技术与方法体系进行了讨论。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了