Computer graphics processing and selective visual display system – Computer graphics processing – Graph generating
Patent
1996-04-30
1999-12-07
Nguyen, Phu K.
Computer graphics processing and selective visual display system
Computer graphics processing
Graph generating
G06F 1500
Patent
active
059991925
ABSTRACT:
A data exploration tool which has a graphical user interface that employs directed graphs to provide histories of the data exploration operations. Nodes in the directed graphs represent operations on data; the edges represent relationships between the operations. One type of the directed graphs is the derivation graph, in which the root of the graph is a node representing a data set and an edge leading from a first node to a second node indicates that the operation represented by the second node is performed on the result of the operation represented by the first node. Operations include query, segmentation, aggregation, and data view operations. A user may edit the derivation graph and may select a node for execution. When that is done, all of the operations represented by the nodes between the root node and the selected node are performed as indicated in the graph. The operations are performed using techniques of lazy evaluation and encachement of results with the nodes. Another type of the directed graphs is the subsumption graph, in which an edge leading from a first node to a second node indicates that the second node stands in a subsumption relationship to the first node. If a result of the operation represented by the first node has been computed, the result is available to calculate the result of the operation represented by the second node.
REFERENCES:
patent: 5475851 (1995-12-01), Kodosky et al.
patent: 5611059 (1997-03-01), Benton et al.
patent: 5627979 (1997-05-01), Chang et al.
Selfridge Peter Gilman
Srivastava Divesh
Lucent Technologies - Inc.
Nguyen Phu K.
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