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| 2 | <head>
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| 3 | <title>Imperial College Visualizer</title>
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| 4 | </head>
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| 5 | <body>
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| 6 | <h1>VISHNU:</h1>
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| 7 |
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| 8 | <h2>Overview</h2>
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| 9 | This is a document search engine with several new visualization front
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| 10 | ends that aid navigation through the set of documents returned by a
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| 11 | query. Keywords from the document set are identified and selected on
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| 12 | the fly. These keywords are then used to compute document clusters. The
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| 13 | clusters can be displayed and explored using three visualizations:
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| 14 | Sammon cluster view, Dendro map or radial interactive visualization.<br>
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| 15 |
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| 16 | <h2>Quick start</h2>
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| 17 | <p>Choose a collection from the colection menu. Type a query into the search box and click the Find button. Each pane will then display the query
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| 18 | results in a different manner.<br>
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| 19 | </p>
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| 20 | <p style="margin-left: 40px;"><span style="font-weight:bold;">PlainVis</span> --- This shows a ranked list of documents
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| 21 | retrieved. Clicking on the link for a document (in the left most
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| 22 | column) will bring up a new window containing the document.<br>
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| 23 | </p>
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| 24 |
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| 25 | <p style="margin-left: 40px;"><span style="font-weight: bold;">RadialVis</span> --- This shows the
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| 26 | key words from the retrieved document set around a circle with the
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| 27 | documents represented by dots within the circle. The dots are arranged
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| 28 | closest to the words that contain them. Clicking on a word will
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| 29 | highlight the documents containing that word. Correspondingly, clicking
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| 30 | on a dot will show the words that it contains. Words can be dragged
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| 31 | which will move the dots, thus changing the influence of that particular
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| 32 | word on the arrangement.<br>
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| 33 | At the bottom part of the pane key words can be selected and de-selected.<br>
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| 34 | </p>
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| 35 | <p style="margin-left: 40px;"><span style="font-weight: bold;">SammonVis</span> --- This displays
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| 36 | documents clustered by key words. As you mouse over a cluster a menu is
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| 37 | displayed. This shows the number of documents in the cluster, and, at
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| 38 | the bottom of the menu, the top ranked key words used to form the
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| 39 | cluster. Clicking on the number of documents brings up the key words
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| 40 | and their percentages in the left hand frame and a summary of the
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| 41 | documents in the right hand frame. It is possible to drill down two
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| 42 | levels through this menu. To return to a higher level use the button at
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| 43 | the top of the frame.<br>
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| 44 | </p>
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| 45 | <p style="margin-left: 40px;"><span style="font-weight: bold;">DendroVis</span> --- This
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| 46 | displays the document clusters arranged in a hierarchical format. As
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| 47 | you mouse over nodes in the display a menu similar to the SammonVis
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| 48 | menu is displayed. You can drill down through the hierarchy to examine
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| 49 | deeper nodes. The key words are displayed at each node. The menu
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| 50 | indicates if these are from the outer twigs (bottom) of the hierarchy.
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| 51 | Clicking on the number of documents in the node displays the keywords
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| 52 | and document summaries.<br>
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| 53 | </p>
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| 54 |
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| 55 |
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| 56 | <p>
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| 57 | <center>
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| 58 | <applet codebase='lib' code='vishnu.testvis.visual.Vishnu.class' archive='vishnu.jar' width='900' height='700'>
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| 59 | <param name='library' value='http://localhost:8080/vishnu/server'/>
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| 60 | </applet>
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| 61 | </p>
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| 62 | </center>
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| 63 | </body>
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| 64 | </html> |
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