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1. 发明申请

US20070068762A1 Adaptive control of externally controlled fan drive 有权
标题翻译：外部控制风扇驱动器的自适应控制
公开(公告)号：US20070068762A1
公开(公告)日：2007-03-29
申请号：US11235428
申请日：2005-09-26
申请人： Nikhil Bhat , Masato Yamada , Sameer Joshi , Ananthakrishnan Surianarayanan
发明人： Nikhil Bhat , Masato Yamada , Sameer Joshi , Ananthakrishnan Surianarayanan
IPC分类号： F16D31/00
CPC分类号： F01P7/042 , F16D35/024
摘要： An externally controlled fan drive includes a fluid clutch that alters torque delivered to a fan housing to rotate the fan housing at a target fan speed. An adaptive controller measures the actual fan speed and adaptively updates the control logic to compensate for variable physical characteristics of the fan device.
摘要翻译：外部控制的风扇驱动器包括流体离合器，其改变传递到风扇壳体的扭矩，以使风扇壳体以目标风扇速度旋转。自适应控制器测量实际的风扇速度，并自适应地更新控制逻辑以补偿风扇设备的可变物理特性。

2. 发明申请

US20060253504A1 Providing the latest version of a data item from an N-replica set 有权
标题翻译：从N复本集提供最新版本的数据项
公开(公告)号：US20060253504A1
公开(公告)日：2006-11-09
申请号：US11124456
申请日：2005-05-04
申请人： Ken Lee , Sameer Joshi , Alok Srivastava
发明人： Ken Lee , Sameer Joshi , Alok Srivastava
IPC分类号： G06F17/30
CPC分类号： G06F17/30578 , Y10S707/99938 , Y10S707/99952 , Y10S707/99953
摘要： Less-restrictive techniques are provided for ensuring that replicated-data systems will never provide out-of-date version of data items. A replicated-data system maintains (1) a version number, (3) a membership group identifier, and (6) a membership count, with each replica of a data item. These values are maintained in such a way as to allow the replicated-data system to reliably satisfy some read requests even though half, or less than half, of the replicas of the data item are available.
摘要翻译：提供了限制较少的技术，以确保复制数据系统永远不会提供数据项的过时版本。复制数据系统维护（1）版本号，（3）成员组标识符，以及（6）与数据项的每个副本的成员数。这些值被保持为允许复制数据系统可靠地满足一些读请求，即使数据项的副本的一半或少于一半可用。

3. 发明申请

US20060195450A1 Persistent key-value repository with a pluggable architecture to abstract physical storage 有权
公开(公告)号：US20060195450A1
公开(公告)日：2006-08-31
申请号：US11404159
申请日：2006-04-13
申请人： Surojit Chatterjee , Raj Kumar , Jonathan Creighton , Alok Srivastava , Sameer Joshi
发明人： Surojit Chatterjee , Raj Kumar , Jonathan Creighton , Alok Srivastava , Sameer Joshi
IPC分类号： G06F17/30
CPC分类号： G06F17/3056 , Y10S707/99931 , Y10S707/99932 , Y10S707/99943 , Y10S707/99953
摘要： A system and techniques are described for managing key-value pairs using an architecture that does not restrict its users to any specific platform or storage subsystem. According to one aspect of the invention, the repository is portable in that the architecture need not change based on the environment and platform in which the repository is used. Rather, the portion of the architecture that is platform-specific is limited to plug-ins at a storage abstraction layer of the repository. The plug-ins expose the same storage abstraction interface to the other layers of the repository, but are implemented to interact with different platforms and storage subsystems. Consequently, in response to being ported from one platform to another, the repository may simply change the plug-in to invoke for persistent storage operations.

4. 发明授权

US07058639B1 Use of dynamic multi-level hash table for managing hierarchically structured information 有权
标题翻译：使用动态多级哈希表来管理分层结构化信息
公开(公告)号：US07058639B1
公开(公告)日：2006-06-06
申请号：US10232907
申请日：2002-08-30
申请人： Surojit Chatterjee , Sameer Joshi
发明人： Surojit Chatterjee , Sameer Joshi
IPC分类号： G06F17/30
CPC分类号： G06F17/3033 , Y10S707/99931
摘要： An aspect of the invention provides a method for managing information associated with a hierarchical key. A plurality of hash tables are created for a plurality of levels of a hierarchy associated with a hierarchical key, wherein each hash table is associated with a corresponding level of the hierarchy. Entries are stored within each of the plurality of hash tables, wherein the entries are associated with key names that have as many levels as the level associated with the respective hash table. Furthermore, a reference to a descendant entry that is in a respective hash table may be stored within each entry.
摘要翻译：本发明的一个方面提供了一种用于管理与分级密钥相关联的信息的方法。为与分级关键字相关联的层级的多个级别创建多个散列表，其中每个散列表与层级的相应级别相关联。条目存储在多个散列表的每一个中，其中条目与具有与相应散列表相关联的级别的级别多的密钥名称相关联。此外，可以在每个条目中存储对相应哈希表中的后代条目的引用。

5. 发明申请

US20050267951A1 Rolling upgrade of distributed software with automatic completion 有权
标题翻译：自动完成分布式软件的滚动升级
公开(公告)号：US20050267951A1
公开(公告)日：2005-12-01
申请号：US10847700
申请日：2004-05-17
申请人： Sameer Joshi , Surojit Chatterjee , Jonathan Creighton
发明人： Sameer Joshi , Surojit Chatterjee , Jonathan Creighton
IPC分类号： G06F9/445 , G06F15/177 , H04L29/08
CPC分类号： G06F8/65 , H04L67/34 , H04L69/329
摘要： A system and method for facilitating an automatic rolling upgrade of distributed software. In a set of computing devices (e.g., a cluster), each node executes the distributed program, but different nodes may operate any number of different versions of the program. During a rolling upgrade of the software, the nodes all operate according to a specified acting version of the software. A node attempting the join the cluster may be required to have a software version at least equal to the acting version. When all nodes have been upgraded to a version newer than the current acting version, the acting version is reset to the lowest software version installed on a node. The rolling upgrade completes automatically when all nodes run at a specified software version (e.g., the most recent) or have the same version installed.
摘要翻译：一种便于分布式软件自动滚动升级的系统和方法。在一组计算设备（例如，集群）中，每个节点执行分布式程序，但不同的节点可以操作程序的任何数量的不同版本。在软件的滚动升级期间，节点都根据指定的软件版本进行操作。尝试加入群集的节点可能需要具有至少等于作用版本的软件版本。当所有节点已升级到比当前演示版本更新的版本时，演示版本将重置为安装在节点上的最低软件版本。当所有节点以指定的软件版本（例如最新）运行或安装相同的版本时，滚动升级将自动完成。

6. 发明申请

US20130246315A1 SYSTEMS AND METHODS FOR SEMANTIC INFERENCE AND REASONING 有权
公开(公告)号：US20130246315A1
公开(公告)日：2013-09-19
申请号：US13422962
申请日：2012-03-16
申请人： Sameer Joshi , Todd Pehle , Larry Crochet
发明人： Sameer Joshi , Todd Pehle , Larry Crochet
IPC分类号： G06N5/04 , G06F15/18
CPC分类号： G06N5/04 , G06F17/30554 , G06F17/30598 , G06N99/005
摘要： A method and system for analyzing a corpus of data artifacts is disclosed. The method comprises obtaining, by a computer, a semantic representation of the data artifacts, where the semantic representation indicates (1) entities identified in the data artifacts, and (2) semantic relationships among the entities as indicated by the data artifacts. The method further comprises clustering the data artifacts into clusters of semantically related data artifacts based on the semantic representation and inferring additional semantic relationships between pairs of the entities. The inferring comprises applying, on a cluster-by-cluster basis, a multi-tiered network of inference engines to a portion of the semantic representation corresponding to the cluster, where the multi-tiered network of inference engines includes a domain-independent inference tier and a domain-specific inference tier.

7. 发明授权

US08169856B2 Time synchronization in cluster systems 有权
标题翻译：集群系统中的时间同步
公开(公告)号：US08169856B2
公开(公告)日：2012-05-01
申请号：US12258344
申请日：2008-10-24
申请人： Vikram Rai , Alok Srivastava , Angelo Pruscino , Sameer Joshi
发明人： Vikram Rai , Alok Srivastava , Angelo Pruscino , Sameer Joshi
IPC分类号： G04C13/00 , G04C11/02 , H04L7/00 , G06F15/16
CPC分类号： G06F1/12 , H04J3/0667
摘要： Techniques are described herein for synchronizing cluster time. According to one technique, a master node is appointed in a cluster. Other “slave” nodes periodically synchronize their clocks with the master node. To synchronize its clock with the master node, a slave node sends a timestamped message to the master node, which also timestamps the message and sends the message back to the slave node, which then timestamps the message again. Based on the timestamps, the slave node is able to determine the difference between the master node's clock's time and slave node's clock's time, compensating for the message travel time between master node and slave node. Depending on various circumstances, and based on the determined difference, the slave node adjusts its clock so that the time indicated by the slave node's clock at least begins to approach more closely the time indicated by the master node's clock.
摘要翻译：这里描述了用于同步集群时间的技术。根据一种技术，在簇中指定主节点。其他“从”节点周期性地将其时钟与主节点同步。为了将其时钟与主节点同步，从节点向主节点发送时间戳消息，主节点还对消息进行时间戳，并将消息发送回从节点，从节点再次对消息进行时间戳。基于时间戳，从节点能够确定主节点的时钟和从节点的时钟时间之间的差异，从而补偿主节点和从节点之间的消息传播时间。根据各种情况，并且根据所确定的差异，从节点调整其时钟，使得从节点的时钟指示的时间至少开始接近主节点时钟指示的时间。

8. 发明授权

US08069370B1 Fault identification of multi-host complex systems with timesliding window analysis in a time series 有权
标题翻译：多时间复杂系统的故障识别与时间序列窗口分析
公开(公告)号：US08069370B1
公开(公告)日：2011-11-29
申请号：US12830069
申请日：2010-07-02
申请人： Fulu Li , Mohsin Beg , Sameer Joshi , WeiHsin Gu , Michael Zoll , Angelo Pruscino
发明人： Fulu Li , Mohsin Beg , Sameer Joshi , WeiHsin Gu , Michael Zoll , Angelo Pruscino
IPC分类号： G06F11/00
CPC分类号： G06F11/079 , G06F11/0709 , G06F11/3409 , H04L41/0636 , H04L41/064 , H04L41/16
摘要： A method and apparatus is provided for determining the most probable cause of a problem observed in a complex multi-host system. The approach relies on a probabilistic model to represent causes and effects in a complex computing system. However, complex systems include a multitude of independently operating components that can cause temporary anomalous states. To reduce the resources required to perform root cause analysis on each transient failure, as well as to raise the confidence in the most probable cause of a failure that is identified by the model, inputs to the probabilistic model are aggregated over a sliding window of values from the recent past.
摘要翻译：提供了一种用于确定在复杂的多主机系统中观察到的问题的最可能原因的方法和装置。该方法依赖于概率模型来表示复杂计算系统中的原因和影响。然而，复杂的系统包括许多可以引起临时异常状态的独立运行的组件。为了减少对每个瞬态故障执行根本原因分析所需的资源，以及提高对由模型识别的故障的最可能原因的置信度，对概率模型的输入在值的滑动窗口上聚合从最近过去。

9. 发明授权

US07693882B2 Replicating data across the nodes in a cluster environment 有权
标题翻译：在集群环境中的节点之间复制数据
公开(公告)号：US07693882B2
公开(公告)日：2010-04-06
申请号：US11243755
申请日：2005-10-04
申请人： Ken Lee , Alok K. Srivastava , Sameer Joshi
发明人： Ken Lee , Alok K. Srivastava , Sameer Joshi
IPC分类号： G06F17/30
CPC分类号： G06F17/30575 , H04L67/1095 , H04L69/40
摘要： Techniques are provided for managing replicated data items in a cluster of shared nothing nodes. The techniques include synchronously propagating changes to one or more replicas, while asynchronously propagating changes to the remaining replicas. Because the replicas to which the change is synchronously replicated may be a relatively small percentage of the total number of replicas, the overhead associated with performing an update is reduced. The process of selecting which nodes are involved in the synchronous update operation may take into account a variety of factors, including which replicas are available at the time the update operation is being performed.
摘要翻译：提供了用于管理无共享节点的集群中的复制数据项的技术。这些技术包括将更改同步传播到一个或多个副本，同时将更改异步传播到剩余的副本。由于同步复制更改的副本可能是副本总数的相对较小的百分比，所以与执行更新相关联的开销减少。在同步更新操作中选择哪些节点的过程可以考虑各种因素，包括在执行更新操作时哪些副本可用。

10. 发明授权

US07617218B2 Persistent key-value repository with a pluggable architecture to abstract physical storage 有权
标题翻译：具有可插拔架构的持久键值存储库，用于抽象物理存储
公开(公告)号：US07617218B2
公开(公告)日：2009-11-10
申请号：US11404159
申请日：2006-04-13
申请人： Surojit Chatterjee , Raj Kumar , Jonathan Creighton , Alok K. Srivastava , Sameer Joshi
发明人： Surojit Chatterjee , Raj Kumar , Jonathan Creighton , Alok K. Srivastava , Sameer Joshi
IPC分类号： G06F7/00 , G06F17/30 , G06F17/00 , G06F12/00
CPC分类号： G06F17/3056 , Y10S707/99931 , Y10S707/99932 , Y10S707/99943 , Y10S707/99953
摘要： A system and techniques are described for managing key-value pairs using an architecture that does not restrict its users to any specific platform or storage subsystem. According to one aspect of the invention, the repository is portable in that the architecture need not change based on the environment and platform in which the repository is used. Rather, the portion of the architecture that is platform-specific is limited to plug-ins at a storage abstraction layer of the repository. The plug-ins expose the same storage abstraction interface to the other layers of the repository, but are implemented to interact with different platforms and storage subsystems. Consequently, in response to being ported from one platform to another, the repository may simply change the plug-in to invoke for persistent storage operations.
摘要翻译：描述了使用不将其用户限制到任何特定平台或存储子系统的架构来管理键值对的系统和技术。根据本发明的一个方面，存储库是可移植的，因为架构不需要基于使用存储库的环境和平台来改变。相反，平台特定的架构部分仅限于存储库的存储抽象层的插件。插件将相同的存储抽象接口暴露给存储库的其他层，但实现为与不同平台和存储子系统进行交互。因此，响应于从一个平台移植到另一个平台，存储库可以简单地改变插件以调用永久存储操作。

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