摘要:
An architecture for an automation system is disclosed that includes look-up services, a soft-state store, and a publication/subscription eventing component. The look-up services maintain a database of a number of devices to be controlled and monitored, and a database of a number of device objects corresponding to the devices. The services can be divided into attribute-based and name-based services. The soft-state store manages variables regarding the devices and the device objects, including heartbeats. The eventing component enables subscriptions to events related to changes in the variables. The architecture can include management daemons, such as a monitoring daemon that detects problems with power line devices.
摘要:
A device adapter for an automation system is disclosed. The device adapter includes at least a transmitter, a receiver, and a logic mechanism. The transmitter announces joining and leaving of the non-intelligent power line device to the automation system. The receiver receives commands from the automation system, and acts as a controller to control electricity to the non-intelligent power line device, depending on the commands received from the system. The logic mechanism determines when to instruct the transmitter to announce joining and leaving. The device adapter can also include a sensor. The sensor determines the on/off status of the power line device.
摘要:
A weak leader election approach to determine which of a number of redundant nodes is the leader node is disclosed. The redundant nodes exchange information particular to them, such as age information. Based on the information received from the other nodes, each node determines whether it is the leader. Where the information is age information, a criteria that can be used to make this determination is that the oldest node is the leader. Each redundant node knows only whether it is the leader node. Redundant nodes that are not the leader do not know which node is the leader node.
摘要:
Power line monitoring is disclosed. The monitoring can be performed in conjunction with an automation system designed to control and monitor devices and sensors. Model-based power line monitoring uses a model of acceptable power line activity. Activity that does not conform to the model is tagged as indicating a potential problem. Pattern-based power line monitoring uses patterns of unacceptable power line activity. Activity that matches one of the patterns is also tagged as indicating a potential problem.
摘要:
The following description provides direction-based topology control to a distributed wireless multi-hop network. The network includes multiple potentially mobile nodes. Each node sends a discovery message in all directions. Each node discovers a set of neighboring nodes using a set of incoming signals from the neighboring nodes that are responsive to the discovery message. Responsive to receiving the incoming messages, each node makes a local decision about a substantially optimal transmission power with which to communicate with at least a portion of the discovered neighboring nodes. The decisions are based on the incoming signals and are also independent of positional information (e.g., latitude and longitude). Each node in the network maintains communications with the decided portion of nodes to provide connectivity between each of the nodes.
摘要:
An exemplary method for protecting web browsers from spam includes providing a multi-layer model that includes a doorway layer, a redirection domain layer, an aggregator layer, a syndicator layer and an advertiser layer; identifying domains as being associated with at least one of the layers; and, based at least in part on the identifying, taking one or more corrective actions to protect web browsers from search spam. An exemplary method for identifying a bottleneck layer in a multi-layer spam model includes providing a multi-layer spam model, collecting spam advertisements, associating a block of IP addresses with the collected spam advertisements and identifying a bottleneck layer based on the block of IP addresses. Other methods, systems, etc., are also disclosed.
摘要:
Search relevance failures are diagnosed automatically. Users presented with unsatisfactory search results can report their dissatisfaction through various mechanisms. Dissatisfaction reports can trigger automatic investigation into the root cause of such dissatisfaction. Based on the identified root cause, a search engine can be modified to resolve the issue creating dissatisfaction thereby improving search engine quality.
摘要:
In an embodiment of isolation environment-based information access, programs—including operating systems and applications—running on a computing-based device can be isolated in an environment such as a virtual machine. Information including commands and/or data transmitted between the computing-based device and the program(s) being run, as well as information associated with the program(s) and the computing-based device, is accessed without being detected by the program(s). In one implementation, the information includes state information as well as commands and/or data—including sensitive information, such as usernames and passwords. In another implementation, the information can be used to secretly access the program(s).
摘要:
A technique for identifying dependencies of an application upon a given security context includes monitoring security checks generated by the application. The security checks requiring elevated rights are identified and the state of execution of the application corresponding to the identified security checks may be logged. The security checks requiring elevated rights may be identified by monitoring access checks, monitoring privilege checks, checking user/group identifiers against a list of known identifiers associated with elevated rights, or the like.
摘要:
Techniques are described for generating a statistical model from observed click chains. The model can be used to compute a probability that a document is relevant to a given search query. With the model, a probability of a user examining a given document in a given search result conditionally depends on: a probability that a preceding document in the given search result is examined by a user viewing the given search result; a probability that the preceding document is clicked on by a user viewing the given search result, which conditionally depends directly on the probability that the preceding document is examined and on a probability of relevance of the preceding document.