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    System and method for automatically identifying classified websites
    4.
    发明授权
    System and method for automatically identifying classified websites 有权
    自动识别分类网站的系统和方法

    公开(公告)号：US08682882B2

    公开(公告)日：2014-03-25

    申请号：US13753463

    申请日：2013-01-29

    申请人： Cheng Xu ,  Gang Feng ,  Xin Li

    发明人： Cheng Xu ,  Gang Feng ,  Xin Li

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30867 ,  G06F17/3089

    摘要： Systems, methods, and computer readable storage mediums are provided to automatically identifying a classified website. A website is determined to be a candidate site based on a set of heuristics. From among pages constituting the candidate site one or more pages are determined to be listing page candidates and one or more pages are determined to be detail page candidates. Then a listing page score is determined using a listing page classifier. Similarly, a detail page score is determined using a detail page classifier. The listing page and detail page scores each indicate the likelihood that the pages are part of a classified website. A candidate site score is determined based in part on a combination of the listing page score and the detail page scores. Then when the candidate site score is above a threshold the candidate site is determined to be a classified website.

    摘要翻译： 提供系统，方法和计算机可读存储介质以自动识别分类的网站。 一个网站被确定为基于一组启发式的候选网站。 从构成候选站点的页面中，确定一个或多个页面是列出页面候选，并且确定一个或多个页面是详细页面候选。 然后使用列表页面分类器确定列表页面分数。 类似地，使用细节页分类器来确定详细页面分数。 列表页面和详细页面分数都表示页面是分类网站一部分的可能性。 部分地基于列表页面分数和详细页面分数的组合来确定候选网站分数。 然后当候选站点得分高于阈值时，该候选站点被确定为分类网站。

    System and method for automatically identifying classified websites
    5.
    发明授权
    System and method for automatically identifying classified websites 有权
    自动识别分类网站的系统和方法

    公开(公告)号：US08380693B1

    公开(公告)日：2013-02-19

    申请号：US13228337

    申请日：2011-09-08

    申请人： Cheng Xu ,  Gang Feng ,  Xin Li

    发明人： Cheng Xu ,  Gang Feng ,  Xin Li

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30867 ,  G06F17/3089

    摘要： Systems, methods, and computer readable storage mediums are provided to automatically identifying a classified website. A website is determined to be a candidate site based on a set of heuristics. From among pages constituting the candidate site one or more pages are determined to be listing page candidates and one or more pages are determined to be detail page candidates. Then a listing page score is determined using a listing page classifier. Similarly, a detail page score is determined using a detail page classifier. The listing page and detail page scores each indicate the likelihood that the pages are part of a classified website. A candidate site score is determined based in part on a combination of the listing page score and the detail page scores. Then when the candidate site score is above a threshold the candidate site is determined to be a classified website.

    摘要翻译： 提供系统，方法和计算机可读存储介质以自动识别分类的网站。 一个网站被确定为基于一组启发式的候选网站。 从构成候选站点的页面中，确定一个或多个页面是列出页面候选，并且确定一个或多个页面是详细页面候选。 然后使用列表页面分类器确定列表页面分数。 类似地，使用细节页分类器来确定详细页面分数。 列表页面和详细页面分数都表示页面是分类网站一部分的可能性。 部分地基于列表页面分数和详细页面分数的组合来确定候选网站分数。 然后当候选站点得分高于阈值时，该候选站点被确定为分类网站。

    Managing database connections
    6.
    发明授权
    Managing database connections 失效
    管理数据库连接

    公开(公告)号：US07844720B2

    公开(公告)日：2010-11-30

    申请号：US12164065

    申请日：2008-06-29

    申请人： Ying Li ,  Ying Chen ,  Jie Qiu ,  Cheng Xu

    发明人： Ying Li ,  Ying Chen ,  Jie Qiu ,  Cheng Xu

    IPC分类号： G06F15/16

    CPC分类号： G06F17/30595

    摘要： The present invention provides a method for managing a database connection, comprising the steps of: in responsive to a connection request of a first application, allocating an available connection for the first application; if there is no available connection, selecting a held connection being used by a second application; backing up connection context of the held connection; releasing the held connection; and allocating the held connection for the first application. Since connection context of the application has been restorably backed up, a connection of the application can be cut off and the connection re-scheduled when necessary. As a result, the connection utilization rate is enhanced. The present invention further provides a device and system that can manage a database connection based on the technology of connection pools. (FIG. 5)

    摘要翻译： 本发明提供了一种用于管理数据库连接的方法，包括以下步骤：响应于第一应用的连接请求，为第一应用分配可用连接; 如果没有可用连接，则选择由第二应用使用的保持连接; 备份所连接的连接上下文; 释放持有的连接; 以及为所述第一应用分配所保持的连接。 由于应用程序的连接上下文已被可修改地备份，所以应用程序的连接可以被切断，并且必要时重新安排连接。 结果，连接利用率提高。 本发明还提供一种可以基于连接池的技术来管理数据库连接的设备和系统。 （图5）

    VOLUTE FOR A CENTRIFUGAL COMPRESSOR
    7.
    发明申请
    VOLUTE FOR A CENTRIFUGAL COMPRESSOR 有权
    压缩机用于离心式压缩机

    公开(公告)号：US20070059168A1

    公开(公告)日：2007-03-15

    申请号：US11531294

    申请日：2006-09-13

    申请人： Cheng Xu

    发明人： Cheng Xu

    IPC分类号： F04D29/44

    CPC分类号： F04D29/441 ,  F04D29/422 ,  F04D29/444 ,  F05D2250/52

    摘要： A volute for use in a centrifugal compressor that includes an impeller. The volute includes a housing defining a central aperture, an inlet channel, and a fluid collecting channel. The central aperture is adapted to receive the impeller such that the impeller discharges a fluid to the inlet channel. The inlet channel directs the flow to the collecting channel. A discharge portion is coupled to the housing and includes a discharge passage in fluid communication with the collecting channel to discharge the fluid. A tongue portion is disposed between the collecting channel and the discharge portion. The tongue is operable to separate the fluid into a first flow that flows through the collecting channel and a second flow that flows through the discharge passage.

    摘要翻译： 一种用于包括叶轮的离心式压缩机的蜗壳。 蜗壳包括限定中心孔的壳体，入口通道和流体收集通道。 中心孔适于接收叶轮，使得叶轮将流体排放到入口通道。 入口通道将流引导到收集通道。 排出部分联接到壳体并且包括与收集通道流体连通以排出流体的排出通道。 舌部设置在收集通道和排出部之间。 舌头可操作以将流体分离成流过收集通道的第一流量和流过排放通道的第二流量。

    Blade features for turbocharger wheel
    8.
    发明授权
    Blade features for turbocharger wheel 有权

    公开(公告)号：US09988907B2

    公开(公告)日：2018-06-05

    申请号：US13066827

    申请日：2011-04-25

    申请人： Cheng Xu

    发明人： Cheng Xu

    IPC分类号： F01D5/14

    CPC分类号： F01D5/141 ,  F05D2220/40

    摘要： A turbocharger including a wheel having suction surfaces and hub surfaces contoured to reduce secondary flow. The suction surfaces are radially contoured with a sinusoidal component, and further have a chamfered edge at the shroud edge. The hub end-walls are contoured both streamwise and cross-stream with sinusoidal components.

    Method and techniques for determining crawling schedule
    9.
    发明授权
    Method and techniques for determining crawling schedule 有权
    确定爬行时间表的方法和技术

    公开(公告)号：US08862569B2

    公开(公告)日：2014-10-14

    申请号：US13348438

    申请日：2012-01-11

    申请人： Cheng Xu ,  Qiying Lin ,  Xin Li

    发明人： Cheng Xu ,  Qiying Lin ,  Xin Li

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30864 ,  G06Q30/0241 ,  H04L67/02

    摘要： Methods, systems and computer-readable storage medium for determining a crawling schedule. In an aspect, a method includes obtaining crawl history data for a Web site having Web pages, determining a status of the Web pages, determining a total quantity of Web pages that have a status of deleted, calculating a probability that another Web page of the Web site will be removed based on the total quantity, and storing data associating the calculated probability with the Web site. The method can further include determining, for a plurality of sets of the previous time periods, a respective crawl penalty as a combination of a penalty for crawling the Web site and a penalty for showing a deleted Web page based on the calculated probability, and determining a re-crawl schedule based on the crawl penalties.

    摘要翻译： 用于确定爬行时间表的方法，系统和计算机可读存储介质。 一方面，一种方法包括获得具有网页的网站的爬网历史数据，确定网页的状态，确定具有删除状态的网页的总数量，计算出该网页的另一网页的概率 将根据总量移除网站，并将计算出的概率与网站相关联的数据进行存储。 该方法可以进一步包括针对多组先前时间段，基于所计算的概率来确定作为用于爬行网站的惩罚和用于显示被删除的网页的惩罚的组合的相应爬坡罚分，以及确定 基于爬网罚款的重新爬行计划。