Patent Document ID: 7890539
Application ID: 11974022

Base Claim:
1. A system that processes text intervals, comprising: a memory; a processor configured to execute a plurality of modules stored in the memory; the modules including: a preprocessing module configured to: extract a first proposition from a first text interval; a generation module configured to: generate a first proposition tree from the first proposition, wherein the first proposition tree comprises a set of nodes and a set of edges, and wherein each edge includes a semantic relationship between nodes of the first proposition tree; and a matching module configured to: determine a first similarity value between the first text interval and a second text interval based on a comparison of the first proposition tree and a second proposition tree corresponding to the second text interval, wherein the second text interval is different from the first text interval, determine a second similarity value between the second text interval and the first text interval, find the second text interval redundant to the first text interval in response to the first and second similarity values each exceeding respective thresholds, and selectively output the second text interval based on at least one of the first similarity value and the redundancy finding.

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Claim 17:
17. The system of claim 1 , wherein the generation system is configured to: generate a first bag of nodes from the first proposition tree and a second bag of nodes from the second proposition tree; and the matching system is configured to: determine the second similarity value by matching the first bag of nodes to the second bag of nodes.