A method for providing an attribute of an element in a processing system having a plurality of elements, the processing system being represented as a directed graph having a plurality of nodes and directed edges, each node representing an element, each node having an attribute, and each directed edge representing a relation between two elements of the plurality of elements, the method including: selecting one node of the plurality of nodes as a starting node; constructing a subgraph, the subgraph including all the nodes that are forward-connected by at least one directed edge from the starting node; and outputting all nodes and the attribute of the nodes of the subgraph.

Techniques are described for graph-based analysis of data generated on sensor networks, such as Internet-of-Things (IoT) networks. Data may be collected from various computing devices, or sensors, on a network. The data is discretized and analyzed to provide a graphical representation of at least a portion of the data. In some instances, the graph may be determined based on various relationships between nodes that correspond to discrete portions of the data, and the relationships between nodes may be time-based correlations between the data of the nodes. The graph accumulates, compresses, and organizes the data to enable efficient data visualization, analysis, alert generation, and/or other activities. A previously generated version of a graph may be compared to a current version to identify a changing situation, such as new usage of the monitored devices, failure or anomalous behavior of the devices, and so forth.

The invention comprises methods, systems and computer programs for providing context based assistance to a control system operator. The invention comprises (i) detecting a first instance of a control system event, (ii) determining event complexity corresponding to the first instance of the control system event, and (iii) responsive to event complexity exceeding a predefined complexity threshold: (a) retrieving a set of operator inputs received at a control system in response to a detected second instance of the control system event, wherein the second instance of the control system event was detected prior in time to the detected first instance of the control system event, and (b) communicating to the control system operator, information identifying a set of operator inputs for responding to the detected first instance of the control event, wherein the identified operator inputs are a sub-set of the retrieved set of operator inputs.

Contextual rendering systems, methods, and computer-readable media include circuitry configured to parse a graphics file into a plurality of graphics objects, determine whether one or more dynamic behavior attributes are present for each graphics object, extract at least one tag name for each graphics object having the one or more dynamic behavior attributes, assign an attribute weight to each dynamic behavior attribute, compute a sum of the attribute weights for each tag name-graphics object combination, rank each of the tag name-graphics object combinations according to the respective computed sum, and display a portion of a graphics view of one or more graphics objects for a first-ranked tag name-graphics object combination in context with other graphics objects.

In a production system, a control unit controls a first apparatus configured to start to operate after a waiting time and a second apparatus configured to starting to operation after a waiting time. A first sensor outputs a value that changes in response to operation of the first apparatus. A second sensor outputs a value that changes in response to operation of the second apparatus. The control unit compares a first time period from a starting of the operation of the first apparatus to an occurrence of a change in the value of the first sensor with a predetermined first threshold value, and compares a second time period from a starting of the operation of the second apparatus to an occurrence of a change in the value of the second sensor with a predetermined second threshold value.

In a production system, a control unit controls a first apparatus configured to start to operate after a waiting time and a second apparatus configured to starting to operation after a waiting time. A first sensor outputs a value that changes in response to operation of the first apparatus. A second sensor outputs a value that changes in response to operation of the second apparatus. The control unit compares a first time period from a starting of the operation of the first apparatus to an occurrence of a change in the value of the first sensor with a predetermined first threshold value, and compares a second time period from a starting of the operation of the second apparatus to an occurrence of a change in the value of the second sensor with a predetermined second threshold value.