Abstract: A novel formulation called the Context-Attentive Bandit with Observations (CABO) is described, where only a limited number of features can be accessed by the learner. The present invention is applicable to many problems including problems arising in clinical settings and dialog systems where it is not possible to reveal the whole feature set. The present invention adapts the standard contextual bandit algorithm known as Thompson Sampling with a novel algorithm, we call Context-Attentive Thompson Sampling with Observations (CATSO). Experimental results are included to demonstrate its effectiveness including a regret analysis and an empirical evaluation demonstrating advantages of the disclosed novel approach on several real-life datasets.

Abstract: The current document is directed to systems, and methods incorporated within the systems, that execute queries against log-file entries. A monitoring subsystem within a distributed computer system uses query results during analysis of log-file entries in order to detect changes in the state of the distributed computer system, identify problems or potential problems, and predict and forecast system characteristics. Because of the large numbers of log-file-entry containers that may need to be opened and processed in order to execute a single query, and because opening and reading through the entries in a log-file-entry container is a computationally expensive and time-consuming operation, the currently disclosed systems employ event-type metadata associated with log-file-entry containers to avoid opening and reading through the log-file entries of log-file-entry containers that do not contain log-file entries with event types relevant to the query.

Abstract: Some embodiments provide a method for saving data communicated with an application during the application downtime. The method, in some embodiments, receives incoming data from an interface of a machine. The incoming data includes data that is originated by different resources to be sent to a particular application that executes on the machine. The method forwards the incoming data to the particular application when the particular application is available, and forwards the incoming data to a data storage to be buffered when the particular application is unavailable for receiving the incoming data.

Abstract: Techniques for calculating a test confidence metric (TCM) are disclosed. Calculating the TCM involves obtaining test results of a testing application. Calculating the TCM is based on confidence scores corresponding respectively to the test results. Calculate a confidence score for a particular test result involves identifying a failure reason for the test result, determining a weight corresponding to the failure reason, and calculating the confidence score based on the weight.

Abstract: Techniques for generating a stream processing pipeline are provided. In one embodiment, a method includes receiving a configuration file from a data service. The configuration file represents a pipeline configuration of the stream processing pipeline, and the pipeline configuration includes representations of a plurality of different types of pipeline stages configured based on a respective customization of an entity. The method further includes generating a plurality of pipeline stages in accordance with the pipeline configuration of the stream processing pipeline; collecting, at one or more pipeline stages of a first-type in the stream processing pipeline, data items from one or more data sources; processing the collected data items at one or more pipeline stages of a second-type in the stream processing pipeline; and transmitting, at one or more pipeline stages of a third-type in the stream processing pipeline, the processed data items to the data service.

Abstract: A method of enhancing log packets with context metadata is provided. The method at a redirecting filter on a host in a datacenter, intercepts a packet from a data compute node (DCN) of a datacenter tenant. The method determines that the intercepted packet is a log packet. The method forwards the log packet and a first set of associated context metadata to a proxy logging server. The first set of context metadata is associated with the log packet based on the DCN that generated the packet. The method, at the proxy logging server, associates a second set of context metadata with the log packet. The second set of context metadata is received from a compute manager of the datacenter. The method sending the log packet and the first and second sets of context metadata from the proxy logging server to a central logging server associated with the tenant.

Abstract: Technology is disclosed for retrieving data from a specific storage layer of a storage system (“the technology”). A query application programming interface (API) is provided that allows an application to specify a storage layer on which the query should be executed. The query API can be used in a multi-threaded environment which employs a combination of fast threads and slow threads to serve read/write requests from applications. The fast threads are configured to query on a first set of storage layers, e.g., storage layers in a primary storage, while the slow threads are configured to query on a second set of storage layers, e.g., storage layers in a secondary storage. If a fast thread does not find the requested data in the first set, the request is transferred to a slow thread and the fast thread is allocated to another request while the slow thread is serving the current request.

Abstract: One or more systems and/or techniques for generating an adaptive tree structure for storing event data based upon data density of events are disclosed. In particular, the adaptive tree structure may comprise one or more levels of nodes, where a level may correspond to a resolution of events. Nodes may correspond to particular time spans over which event data was recorded. A node may be designated as a raw node comprising raw events or a summary node comprising summary events based upon the number of events occurring within a time span covered by the node.

Abstract: The current document is directed to an integrated application-aware load-balancing component of a distributed computer system. The integrated application-aware load-balancing component is, in a described embodiment, incorporated within a distributed application that serves as a control component of multiple physical computers within a distributed computer system. The integrated application-aware load-balancing component includes a layer-4 load-balancing subcomponent that distributes communications connections initiated by remote client computers among computational nodes within the distributed computer system in order to balance the computational load applied to the distributed application and distributed computer system by the remote client computers.

Abstract: The current document is directed to systems, and methods incorporated within the systems, that execute queries against log-file entries. A monitoring subsystem within a distributed computer system uses query results during analysis of log-file entries in order to detect changes in the state of the distributed computer system, identify problems or potential problems, and predict and forecast system characteristics. Because of the large numbers of log-file-entry containers that may need to be opened and processed in order to execute a single query, and because opening and reading through the entries in a log-file-entry container is a computationally expensive and time-consuming operation, the currently disclosed systems employ event-type metadata associated with log-file-entry containers to avoid opening and reading through the log-file entries of log-file-entry containers that do not contain log-file entries with event types relevant to the query.

Abstract: A method for monitoring crop health of a geographic region includes receiving an image comprising a set of image elements, the image corresponding to a time unit, mapping an image element of the set of image elements to a geographic sub-region of the geographic region, determining a geographic region performance value for the image element, determining a geographic region performance value change, and identifying a crop health anomaly based on the geographic region performance change and an expected geographic region performance value change. Determining the geographic region performance value for the image element can include determining a vegetative performance value for the image element, mapping the image element to a crop type, and normalizing the vegetative performance value.

Abstract: Methods and systems to sample event messages are described. As event messages are generated by one or more sources, the event messages are stored in a storage queue. An event message policy that represents conditions for storing event messages in a sample log file are input. For each event message output from the storage queue, the event message may be stored in a sample log file when one or more of the conditions of the event message policy are satisfied. The event messages of the sample log file may be displayed in a graphical user interface that enables a user to change the event message policy.

Abstract: Techniques for calculating a test confidence metric (TCM) are disclosed. Calculating the TCM involves obtaining test results of a testing application. Calculating the TCM is based on confidence scores corresponding respectively to the test results. Calculate a confidence score for a particular test result involves identifying a failure reason for the test result, determining a weight corresponding to the failure reason, and calculating the confidence score based on the weight.

Abstract: Some embodiments provide a method for saving data communicated with an application during the application downtime. The method, in some embodiments, receives incoming data from an interface of a machine. The incoming data includes data that is originated by different resources to be sent to a particular application that executes on the machine. The method forwards the incoming data to the particular application when the particular application is available, and forwards the incoming data to a data storage to be buffered when the particular application is unavailable for receiving the incoming data.

Abstract: The current document is directed to an integrated application-aware load-balancing component of a distributed computer system. The integrated application-aware load-balancing component is, in a described embodiment, incorporated within a distributed application that serves as a control component of multiple physical computers within a distributed computer system. The integrated application-aware load-balancing component includes a layer-4 load-balancing subcomponent that distributes communications connections initiated by remote client computers among computational nodes within the distributed computer system in order to balance the computational load applied to the distributed application and distributed computer system by the remote client computers.

Abstract: The current document is directed to an integrated application-aware load-balancing component of a distributed computer system. The integrated application-aware load-balancing component is, in a described embodiment, incorporated within a distributed application that serves as a control component of multiple physical computers within a distributed computer system. The integrated application-aware load-balancing component includes a layer-4 load-balancing subcomponent that distributes communications connections initiated by remote client computers among computational nodes within the distributed computer system in order to balance the computational load applied to the distributed application and distributed computer system by the remote client computers.

Abstract: A method for monitoring crop health of a geographic region includes receiving an image comprising a set of image elements, the image corresponding to a time unit, mapping an image element of the set of image elements to a geographic sub-region of the geographic region, determining a geographic region performance value for the image element, determining a geographic region performance value change, and identifying a crop health anomaly based on the geographic region performance change and an expected geographic region performance value change. Determining the geographic region performance value for the image element can include determining a vegetative performance value for the image element, mapping the image element to a crop type, and normalizing the vegetative performance value.

Abstract: A method for monitoring crop health of a geographic region includes receiving an image comprising a set of image elements, the image corresponding to a time unit, mapping an image element of the set of image elements to a geographic sub-region of the geographic region, determining a geographic region performance value for the image element, determining a geographic region performance value change, and identifying a crop health anomaly based on the geographic region performance change and an expected geographic region performance value change. Determining the geographic region performance value for the image element can include determining a vegetative performance value for the image element, mapping the image element to a crop type, and normalizing the vegetative performance value.

Abstract: A method of enhancing log packets with context metadata is provided. The method at a redirecting filter on a host in a datacenter, intercepts a packet from a data compute node (DCN) of a datacenter tenant. The method determines that the intercepted packet is a log packet. The method forwards the log packet and a first set of associated context metadata to a proxy logging server. The first set of context metadata is associated with the log packet based on the DCN that generated the packet. The method, at the proxy logging server, associates a second set of context metadata with the log packet. The second set of context metadata is received from a compute manager of the datacenter. The method sending the log packet and the first and second sets of context metadata from the proxy logging server to a central logging server associated with the tenant.

Abstract: A method for monitoring crop health of a geographic region includes receiving an image comprising a set of image elements, the image corresponding to a time unit, mapping an image element of the set of image elements to a geographic sub-region of the geographic region, determining a geographic region performance value for the image element, determining a geographic region performance value change, and identifying a crop health anomaly based on the geographic region performance change and an expected geographic region performance value change. Determining the geographic region performance value for the image element can include determining a vegetative performance value for the image element, mapping the image element to a crop type, and normalizing the vegetative performance value.