公开(公告)号：US08751431B2

公开(公告)日：2014-06-10

申请号：US12632716

申请日：2009-12-07

Applicant: Nicholas Duffield ,  Balachaner Krishnamurthy

Inventor： Nicholas Duffield ,  Balachaner Krishnamurthy

IPC: G06N5/00

CPC classification number: H04L47/2475 ,  G06Q10/063 ,  H04L43/10 ,  H04L43/50 ,  H04L67/025

Abstract: Described is a system and method for determining a classification of an application that includes initiating a stress test on the application, the stress test including a predetermined number of stress events, wherein the stress events are based on a network impairment. A response by the application to each stress event is identified and the application is classified as a function of the response into one of a first classification and a second classification, the first classification indicative of a normal application and the second classification indicative of an undesired application. If, the application is in the second classification, a network response procedure is executed.

Abstract translation: 描述了一种用于确定应用程序分类的系统和方法，包括启动对应用程序的压力测试，压力测试包括预定数量的压力事件，其中应力事件基于网络损伤。 识别应用程序对每个压力事件的响应，将应用程序分类为响应于第一分类和第二分类之一的函数，第一分类指示正常应用，第二分类指示不期望的应用 。 如果应用程序处于第二分类中，则执行网络响应过程。

公开(公告)号：US08442827B2

公开(公告)日：2013-05-14

申请号：US12818821

申请日：2010-06-18

Applicant: Nicholas Duffield

Inventor： Nicholas Duffield

IPC: G10L15/00 ,  G10L21/00 ,  G06F17/28 ,  G06F17/27 ,  H04M1/64

CPC classification number: G10L15/18 ,  G06F3/167 ,  G10L15/00 ,  G10L15/187 ,  G10L15/22 ,  G10L15/30 ,  G10L17/14 ,  H04M3/4936 ,  H04M2203/2061 ,  H04M2203/255 ,  H04M2250/58

Abstract: Disclosed herein are systems, methods, and non-transitory computer-readable storage media for approximating an accent source. A system practicing the method collects data associated with customer specific services, generates country-specific or dialect-specific weights for each service in the customer specific services list, generates a summary weight based on an aggregation of the country-specific or dialect-specific weights, and sets an interactive voice response system language model based on the summary weight and the country-specific or dialect-specific weights. The interactive voice response system can also change the user interface based on the interactive voice response system language model. The interactive voice response system can tune a voice recognition algorithm based on the summary weight and the country-specific weights. The interactive voice response system can adjust phoneme matching in the language model based on a possibility that the speaker is using other languages.

Abstract translation: 本文公开了用于近似重音源的系统，方法和非暂时的计算机可读存储介质。 实施该方法的系统收集与客户特定服务相关联的数据，为客户特定服务列表中的每个服务生成特定于国家或方言的权重，基于国家特定或方言特定权重的聚合生成摘要权重 并且基于总体权重和针对具体国家或方言的权重设置交互式语音响应系统语言模型。 交互式语音响应系统还可以基于交互式语音响应系统语言模型改变用户界面。 交互式语音响应系统可以基于总体权重和国家特定权重调整语音识别算法。 交互式语音响应系统可以根据演讲者正在使用其他语言的可能性来调整语言模型中的音素匹配。

公开(公告)号：US20130013542A1

公开(公告)日：2013-01-10

申请号：US13620668

申请日：2012-09-14

Applicant: SUBHABRATA SEN ,  Nicholas duffield ,  Patrick Haffner ,  Jeffrey Erman ,  Yu Jin

Inventor： SUBHABRATA SEN ,  Nicholas duffield ,  Patrick Haffner ,  Jeffrey Erman ,  Yu Jin

IPC: G06F15/18 ,  G06N5/02

CPC classification number: G06N99/005

Abstract: A traffic classifier has a plurality of binary classifiers, each associated with one of a plurality of calibrators. Each calibrator trained to translate an output score of the associated binary classifier into an estimated class probability value using a fitted logistic curve, each estimated class probability value indicating a probability that the packet flow on which the output score is based belongs to the traffic class associated with the binary classifier associated with the calibrator. The classifier training system configured to generate a training data based on network information gained using flow and packet sampling methods. In some embodiments, the classifier training system configured to generate reduced training data sets, one for each traffic class, reducing the training data related to traffic not associated with the traffic class.

Abstract translation: 流量分类器具有多个二进制分类器，每个二进制分类器与多个校准器之一相关联。 每个校准器被训练成使用拟合的逻辑曲线将相关联的二进制分类器的输出得分转换成估计的类概率值，每个估计的类概率值指示输出得分所基于的分组流的概率属于相关联的流量类别 与校准器相关联的二进制分类器。 分类器训练系统被配置为基于使用流和分组采样方法获得的网络信息生成训练数据。 在一些实施例中，分类器训练系统被配置为生成减少的训练数据集，每个业务类别一个，减少与业务类别不相关的业务相关的训练数据。

公开(公告)号：US08218451B2

公开(公告)日：2012-07-10

申请号：US13019240

申请日：2011-02-01

Applicant: Nicholas Duffield ,  Carsten Lund ,  Subhabrata Sen ,  Yin Zhang ,  Sumeet Singh

Inventor： Nicholas Duffield ,  Carsten Lund ,  Subhabrata Sen ,  Yin Zhang ,  Sumeet Singh

IPC: G06F11/30 ,  G06F12/00

CPC classification number: H04L63/1425 ,  H04L29/12801 ,  H04L61/6004 ,  H04L63/1441 ,  H04L63/1458 ,  Y10S707/99945 ,  Y10S707/99948

Abstract: An efficient streaming method and apparatus for detecting hierarchical heavy hitters from massive data streams is disclosed. In one embodiment, the method enables near real time detection of anomaly behavior in networks.

Abstract translation: 公开了一种用于从海量数据流检测分层重击打者的有效的流传输方法和装置。 在一个实施例中，该方法能够近似实时地检测网络中的异常行为。

公开(公告)号：US08165019B2

公开(公告)日：2012-04-24

申请号：US12460113

申请日：2009-07-14

Applicant: Lee Breslau ,  Amogh Dhamdhere ,  Nicholas Duffield ,  Cheng Ee ,  Alexandre Gerber ,  Carsten Lund ,  Subhabrata Sen

Inventor： Lee Breslau ,  Amogh Dhamdhere ,  Nicholas Duffield ,  Cheng Ee ,  Alexandre Gerber ,  Carsten Lund ,  Subhabrata Sen

IPC: H04L12/26 ,  H04L12/56

CPC classification number: H04L43/18 ,  H04L43/062 ,  H04L45/70

Abstract: Statistical methods are used to observe packet flow arrival processes and to infer routing changes from those observations. Packet flow arrivals are monitored using NetFlow or another packet flow monitoring arrangement. Packet flow arrivals are quantified by counting arrivals per unit time, or by measuring an inter-arrival time between flows. When a change in packet flow arrivals is determined to be statistically significant, a change in network routing protocol is reported.

Abstract translation: 统计方法用于观察分组流到达过程，并从这些观察中推断出路由变化。 使用NetFlow或另一个分组流监视装置来监视分组流到达。 通过对每单位时间的到达时间进行计数，或通过测量流之间的到达之间的时间来量化分组流到达。 当分组流到达的变化被确定为具有统计学意义时，报告了网络路由协议的变化。

公开(公告)号：US08121599B2

公开(公告)日：2012-02-21

申请号：US12343877

申请日：2008-12-24

Applicant: Alexandre Gerber ,  Nicholas Duffield ,  Robert Manzo ,  William Ramirez

Inventor： Alexandre Gerber ,  Nicholas Duffield ,  Robert Manzo ,  William Ramirez

IPC: H04W36/00

CPC classification number: H04W36/0083 ,  H04M15/00 ,  H04M15/8038 ,  H04M2215/204 ,  H04M2215/7442 ,  H04W4/24 ,  H04W24/08

Abstract: A device includes a processor configured to determine a number of users in each of a plurality of wireless telephone cells of a trajectory in a wireless telephone network. The processor is also configured to determine handoff data between each adjacent pair of the wireless telephone cells, and to determine a first number of users traveling along the trajectory in the wireless telephone network while on a telephone call. The processor also calculates a total number of users associated with the trajectory in the wireless telephone network based on the handoff data between each adjacent pair of the wireless telephone cells, and based on the first number of users traveling along the trajectory while on the telephone call.

Abstract translation: 一种设备包括处理器，其被配置为确定无线电话网络中的轨迹的多个无线电话单元中的每一个中的用户数量。 处理器还被配置为确定每个相邻无线电话单元对之间的切换数据，并且确定在电话呼叫期间沿着无线电话网络中的轨迹行进的第一数量的用户。 处理器还基于每个相邻无线电话单元对之间的切换数据，并且基于在电话呼叫期间沿着轨迹行进的第一数量的用户，计算与无线电话网络中的轨迹相关联的用户总数 。

公开(公告)号：US08073945B2

公开(公告)日：2011-12-06

申请号：US12109743

申请日：2008-04-25

Applicant: Joel Sommers ,  Nicholas Duffield ,  Paul Barford ,  Amos Ron

Inventor： Joel Sommers ,  Nicholas Duffield ,  Paul Barford ,  Amos Ron

IPC: G06F13/00

CPC classification number: H04L43/12 ,  H04L43/0829 ,  H04L43/0852

Abstract: A method and an apparatus for providing a measurement of performance for a network are disclosed. For example, the method sends a plurality of multi-objective probes on a path, and receives one or more of said plurality of multi-objective probes for the path. The method then determines a plurality of performance measurements.

Abstract translation: 公开了一种提供网络性能测量的方法和装置。 例如，该方法在路径上发送多个多目标探测器，并且接收用于路径的所述多个多目标探测器中的一个或多个。 该方法然后确定多个性能测量。

公开(公告)号：US08005010B2

公开(公告)日：2011-08-23

申请号：US12022733

申请日：2008-01-30

Applicant: Lee Breslau ,  Nicholas Duffield ,  Yu Gu ,  Subhabrata Sen

Inventor： Lee Breslau ,  Nicholas Duffield ,  Yu Gu ,  Subhabrata Sen

IPC: H04L12/26

CPC classification number: H04L12/4633 ,  H04L43/0864

Abstract: A method and apparatus for providing performance measurements on network tunnels in packet networks are disclosed. For example, the method establishes two tunnels between a first measurement host and a first router, and establishes a tunnel between the first router and a second measurement host. The method also establishes a multicast group having a plurality of members, and sends one or more packets addressed to the multicast group from the first measurement host. The method measures the frequencies of directly and/or indirectly received responses from the plurality of members of the multicast group, and provides a plurality of estimated values for a plurality of packet transmission rates from measurement of the frequencies for one or more of said tunnels.

Abstract translation: 公开了一种用于在分组网络中的网络隧道上提供性能测量的方法和装置。 例如，该方法在第一测量主机和第一路由器之间建立两个隧道，并在第一路由器和第二测量主机之间建立隧道。 该方法还建立具有多个成员的多播组，并且从第一测量主机发送寻址到多播组的一个或多个分组。 该方法测量来自多播组的多个成员的直接和/或间接接收的响应的频率，并从测量一个或多个所述隧道的频率提供多个分组传输速率的多个估计值。

公开(公告)号：US07746808B2

公开(公告)日：2010-06-29

申请号：US12136725

申请日：2008-06-10

Applicant: Nicholas Duffield ,  Edith Cohen ,  Haim Kaplan ,  Carsten Lund ,  Mikkel Thorup

Inventor： Nicholas Duffield ,  Edith Cohen ,  Haim Kaplan ,  Carsten Lund ,  Mikkel Thorup

IPC: H04L12/26

CPC classification number: H04L43/024

Abstract: The invention relates to streaming algorithms useful for obtaining summaries over unaggregated packet streams and for providing unbiased estimators for characteristics, such as, the amount of traffic that belongs to a specified subpopulation of flows. Packets are sampled from a packet stream and aggregated into flows and counted by implementation of Adaptive Sample-and-Hold (ASH) or Adaptive NetFlow (ANF), adjusting the sampling rate based on a quantity of flows to obtain a sketch having a predetermined size, the sampling rate being adjusted in steps; and transferring the count of aggregated packets from SRAM to DRAM and initializing the count in SRAM following adjustment of the sampling rate.

Abstract translation: 本发明涉及用于在未分组的分组流上获得摘要的用于提供用于特征的无偏估计器的流式传输算法，例如属于指定的流量子群的业务量。 分组从分组流中采样并聚合成流，并通过实施自适应采样保持（ASH）或自适应净流（ANF）进行计数，根据流量调整采样率，以获得具有预定尺寸的草图 采样率逐步调整; 并将汇总数据包从SRAM传输到DRAM，并在采样率调整后初始化SRAM中的计数。

公开(公告)号：US20100157809A1

公开(公告)日：2010-06-24

申请号：US12343007

申请日：2008-12-23

Applicant: Nicholas Duffield ,  Lee M. Breslau ,  Cheng Ee ,  Alexandre Gerber ,  Carsten Lund ,  Subhabrata Sen

Inventor： Nicholas Duffield ,  Lee M. Breslau ,  Cheng Ee ,  Alexandre Gerber ,  Carsten Lund ,  Subhabrata Sen

IPC: G06F11/30

CPC classification number: H04L43/026 ,  H04L43/024 ,  Y02D50/30

Abstract: Disclosed herein are systems, computer-implemented methods, and computer-readable media for sampling network traffic. The method includes receiving a desired quantity of flow record to sample, receiving a plurality of network flow record each summarizing a network flow of packets, calculating a hash for each flow record of based on one or more invariant part of a respective flow, generating a quasi-random number from the calculated hash for each respective flow record, generating a priority from the calculated hash for each respective flow record, and sampling exactly the desired quantity of flow records, selecting flow records having a highest priority first. In one aspect, the method further partitions the plurality of flow records into groups based on flow origin and destination, generates an individual priority for each partitioned group, and separately samples exactly the desired quantity of flow records from each partitioned group, selecting flows having a highest individual priority first.

Abstract translation: 本文公开了系统，计算机实现的方法和用于对网络业务进行采样的计算机可读介质。 该方法包括接收所需数量的流记录到采样中，接收多个网络流记录，每个汇总分组的网络流，基于相应流的一个或多个不变部分计算每个流记录的散列， 从每个相应流记录的计算散列中产生准随机数，从每个相应流记录的计算散列生成优先级，并精确地采样所需数量的流记录，首先选择具有最高优先级的流记录。 在一个方面，该方法还基于流源和目的地进一步将多个流记录划分为组，为每个分区组生成一个单独的优先级，并且从每个分区组中分别精确地采集所需数量的流记录，选择具有 最高个人优先。