IDENTIFYING AND VALIDATING FACTORS THAT HAVE PARTICULAR EFFECTS ON USER BEHAVIOR
    21.
    发明申请
    IDENTIFYING AND VALIDATING FACTORS THAT HAVE PARTICULAR EFFECTS ON USER BEHAVIOR 审中-公开
    对用户行为具有特殊影响的鉴别和验证因素

    公开(公告)号:US20090055200A1

    公开(公告)日:2009-02-26

    申请号:US11841558

    申请日:2007-08-20

    IPC分类号: G06Q99/00

    CPC分类号: G06Q30/02 G06Q30/018

    摘要: Techniques are described herein for an automatic discovery and validation analyzer that identifies factors that have a particular effect on members of a population in engaging in certain activities. A baseline set and a divergent set of members of the population are identified based on whether a member has experienced a significant change in magnitude of the particular effect during a particular period of time. Differences in behaviors of members of the baseline and divergent sets are then analyzed to identify a candidate factor that corresponds to exposure to an item. Such a candidate factor is then validated as to whether it is a cause of said significant change in magnitude of the particular effect experienced by the divergent set of members.

    摘要翻译: 本文描述了用于自动发现和验证分析器的技术,其识别对参与某些活动的人群具有特定影响的因素。 根据成员是否在特定时间段内经历特定效果的幅度的重大变化来确定基准集和群体成员的不同组合。 然后分析基线和发散集合成员的行为差异,以确定对应于项目曝光的候选因子。 那么这样的候选因素然后被验证是否是由成员集合的不同组合所经历的特定效果的大幅度变化的原因。

    Method and apparatus for optimizing support vector machine kernel parameters
    22.
    发明授权
    Method and apparatus for optimizing support vector machine kernel parameters 有权
    优化支持向量机内核参数的方法和装置

    公开(公告)号:US07283984B1

    公开(公告)日:2007-10-16

    申请号:US11049146

    申请日:2005-02-01

    IPC分类号: G06F17/00 G06N5/00

    CPC分类号: G06K9/6269 G06N99/005

    摘要: One embodiment of the present invention provides a system that optimizes support vector machine (SVM) kernel parameters. During operation, the system assigns sets of kernel parameter values to each node in a multiprocessor system. Next, the system performs a cross-validation operation at each node in the multiprocessor system based on a data set. This cross-validation operation computes an error cost value reflecting the number of misclassifications that arise while classifying the data set using the assigned set of kernel parameter values. The system then communicates the computed error cost values between nodes in the multiprocessor system, and eliminates nodes with relatively high error cost values. Next, the system performs a cross-over operation in which kernel parameter values are exchanged between remaining nodes to produce new sets of kernel parameter values. This process is repeated until a global winning set of kernel parameter values emerges.

    摘要翻译: 本发明的一个实施例提供一种优化支持向量机(SVM)内核参数的系统。 在运行期间,系统会为多处理器系统中的每个节点分配一组内核参数值。 接下来,系统基于数据集在多处理器系统中的每个节点处执行交叉验证操作。 该交叉验证操作计算反映在使用分配的一组内核参数值对数据集进行分类时出现的错误分类数量的错误成本值。 然后,系统在多处理器系统中的节点之间传送计算出的错误成本值,并消除具有相对较高错误成本值的节点。 接下来,系统执行交叉操作,其中在剩余节点之间交换内核参数值以产生新的内核参数值集合。 重复此过程,直到出现全局获胜的内核参数值集。

    Method and apparatus for detecting a change-point in a time-series of computer telemetry signals
    23.
    发明申请
    Method and apparatus for detecting a change-point in a time-series of computer telemetry signals 有权
    用于检测计算机遥测信号的时间序列中的变化点的方法和装置

    公开(公告)号:US20070239740A1

    公开(公告)日:2007-10-11

    申请号:US11403127

    申请日:2006-04-11

    IPC分类号: G06F7/00

    摘要: A system that detects a change point in a time series of telemetry signals from a computer system. During operation, the system receives the time series of telemetry signals from the computer system. For each element in the time series, the system (1) inserts the element into a data structure which keeps track of the number of elements in the data structure that have a value greater than and that have a value less than the value of the inserted element; and (2) uses the information stored in the data structure to add a contribution by the inserted element to a trend statistic for the time series. The system then uses the trend statistic to select a hypothesis for the trend in the time series.

    摘要翻译: 检测来自计算机系统的遥测信号的时间序列中的变化点的系统。 在运行过程中,系统从计算机系统接收到遥测信号的时间序列。 对于时间序列中的每个元素,系统(1)将元素插入到数据结构中,该数据结构跟踪数据结构中具有大于并且具有小于插入的值的值的元素的数量 元件; 和(2)使用存储在数据结构中的信息将插入的元素的贡献添加到时间序列的趋势统计量。 然后,系统使用趋势统计量为时间序列中的趋势选择假设。

    Method and apparatus for detecting memory leaks in computer systems
    24.
    发明申请
    Method and apparatus for detecting memory leaks in computer systems 有权
    用于检测计算机系统中的内存泄漏的方法和装置

    公开(公告)号:US20070033365A1

    公开(公告)日:2007-02-08

    申请号:US11195015

    申请日:2005-08-02

    IPC分类号: G06F12/00

    CPC分类号: G06F11/3452 G06F12/023

    摘要: A system that identifies processes with a memory leak in a computer system. During operation, the system periodically samples memory usage for processes running on the computer system. The system then ranks the processes by memory usage and selects a specified number of processes with highest memory usage based on the ranking. For each selected process, the system computes a first-order difference of memory usage by taking a difference between the memory usage at a current sampling time and the memory usage at an immediately preceding sampling time. The system then generates a memory-leak index based on the first-order difference and a preceding memory-leak index computed at the immediately preceding sampling time.

    摘要翻译: 识别计算机系统中内存泄漏的进程的系统。 在运行期间,系统会周期性地对运行在计算机系统上的进程进行内存使用。 然后,系统通过内存使用对进程进行排序,并根据排名选择具有最高内存使用量的指定数量的进程。 对于每个所选择的处理,系统通过取得当前采样时间的存储器使用量与紧接在前的采样时间的存储器使用量之间的差异来计算存储器使用的一阶差。 然后,系统基于一阶差异和在紧接在前的采样时间计算的先前的存储器 - 泄漏索引来生成内存泄漏索引。