Drawing Device for Relationship Diagram of Documents Arranging the Documents in Chronolgical Order
First Claim
1. A document correlation diagram drawing device, comprising:
- extraction means for extracting content data and time data of each of a plurality of document elements each including one or a plurality of documents;
tree diagram drawing means for drawing a tree diagram showing correlations between the plurality of document elements on the basis of the content data of the document elements;
clustering means for cutting the tree diagram on the basis of a predetermined rule and extracting clusters; and
intra-cluster arrangement means for determining an intra-cluster arrangement of the document elements belonging to each cluster on the basis of the time data of the document elements.
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Abstract
A document correlation diagram drawing device includes extracting means (20, 30) for extracting content data and time data of document elements (E) each including one or more documents, dendrogram drawing means (50) for drawing a dendrogram showing a correlation between documents on the basis of the content data of the document elements, clustering means (70) for cutting the dendrogram in accordance with a predetermined rule and extracting clusters, and intra-cluster arranging means (90) for determining an intra-cluster arrangement of the document elements belonging to each cluster on the basis of the time data of the document elements. Accordingly, a dendrogram adequately showing the chronological development in each field can be automatically drawn.
317 Citations
17 Claims
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1. A document correlation diagram drawing device, comprising:
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extraction means for extracting content data and time data of each of a plurality of document elements each including one or a plurality of documents; tree diagram drawing means for drawing a tree diagram showing correlations between the plurality of document elements on the basis of the content data of the document elements; clustering means for cutting the tree diagram on the basis of a predetermined rule and extracting clusters; and intra-cluster arrangement means for determining an intra-cluster arrangement of the document elements belonging to each cluster on the basis of the time data of the document elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A document correlation diagram drawing device, comprising:
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extraction means for extracting content data and time data of each of a plurality of document elements each including one or a plurality of documents; time slice classification means for classifying the plurality of document elements into a plurality of time slices on the basis of the time data of the document elements; clustering means for extracting clusters from the time slices on the basis of the content data of the document elements belonging to each time slice; and time slice connection means for connecting the clusters belonging to different time slices.
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16. A document correlation diagram drawing method, comprising:
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an extraction step of extracting content data and time data of each of a plurality of document elements each including one or a plurality of documents; a tree diagram drawing step of drawing a tree diagram showing correlations between the plurality of document elements on the basis of the content data of the document elements; a clustering step of cutting the tree diagram on the basis of a predetermined rule and extracting clusters; and an intra-cluster arrangement step of determining an intra-cluster arrangement of the document elements belonging to each cluster on the basis of the time data of the document elements.
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17. A document correlation diagram drawing program allowing a computer to execute:
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an extraction step of extracting content data and time data of each of a plurality of document elements each including one or a plurality of documents; a tree diagram drawing step of drawing a tree diagram showing correlations between the plurality of document elements on the basis of the content data of the document elements; a clustering step of cutting the tree diagram on the basis of a predetermined rule and extracting clusters; and an intra-cluster arrangement step of determining an intra-cluster arrangement of the document elements belonging to each cluster on the basis of the time data of the document elements.
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Specification