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| Autor | M.N. Smith, P.J.H. King |
| Titel | The Exploratory Construction of Database Views |
| Herausgeber | School of Computer Science and Information Systems, Birbeck College, University of London |
| Ort | London |
| Jahr | 2002 |
| Nummer | 02-02 |
| Umfang | 11 Seiten |
| Reihe | Research Report BBKCS |
| Anmerkung | It has already been officially noted in 2009 (see [1]) that Nm has taken parts of this source for yet another of his papers with "insufficient attribution (including appropriate references to the original author(s) and/or paper titles) and without permission". |
| URL | http://www.dcs.bbk.ac.uk/TriStarp/pubs/ECoDV2002.pdf |
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| Fußnoten | no |
| Fragmente | 4 |
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| The iMiner is an experimental system, which provides facilities for retrieval of information and its presentation in graph form. A number of facilities that enable small subgraphs to be retrieved and added to the browsing canvas are also provided. In the current implementation we have provided four such facilities that are described in next section.
6.4.1 The Subgraph Retrieval Facilities An analyst begins to construct a view by placing one or more objects on the browsing canvas, either by selecting from the list of those stored, or by retrieving objects according to their attribute values. The user may then begin to use the facilities that we now describe using the example of the database shown in Figure. 6.3. |
The Exploratory Database View Constructor (EDVC) is an experimental system, which provides facilities for the incremental exploratory retrieval of information and its presentation in graph form as described in section 2 above. A number of facilities that enable small sub-graphs to be retrieved and added to the browsing canvas [FN 13] are also provided. In the current implementation we have provided seven such facilities that are described in the next section.
5.2 The sub-graph retrieval facilities 5.2.1 Introduction The user begins to construct a view by placing one or more objects on the browsing canvas, either by selecting from a list of those stored, or by retrieving objects according to their attribute values [FN 14]. The user may then begin to use the facilities that we now describe using the example database shown in figure 5.1 [FN 15]. --- [FN 13] We use the term “browsing canvas” throughout this section to refer to the display area on which the database view or chart is constructed. [FN 14] Objects are retrieved in this manner by specifying conditions that the attribute values of the objects retrieved must satisfy. These conditions are specified in an attribute condition grid similar to that used in QBE [ZLOO75]. [FN 15] The criminal intelligence database depicted in figure 5.1 and the examples presented throughout this section are based upon those presented in [AYRE95]. |
It has already been officially noted in 2009 (see [2]) that Nm has taken parts of this source for yet another of his papers with "insufficient attribution (including appropriate references to the original author(s) and/or paper titles) and without permission". Here the source is not given, either. |
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| 6.4.1.1 Retrieving all objects that are directly or indirectly connected to a specified object
This facility may be used to retrieve and display all objects stored in the database that are connected an object already displayed on the browsing canvas by a path in the database of an arbitrary length, the associated connecting paths also being displayed. A user may specify the maximum length of a path from the object and the type of links that a connecting path may include. For example, if an object representing Saeen was placed on the browsing canvas and this facility was used to display all objects connected to Saeen by a path of length two or less then the objects and links shown in Figure 6.4 would be displayed. |
5.2.3 Retrieving all objects that are directly or indirectly connected to a specified object
The vicinity facility may be used to retrieve and display all objects stored in the database that are connected to an object already displayed on the browsing canvas by a path in the database of an arbitrary length, the associated connecting paths also being displayed. The user may specify the maximum length of a path from the object and the type of links that connecting paths may include. For example, if the object representing Sandra was placed on the browsing canvas and the vicinity facility was used to display all objects connected to Sandra by a path of length two or less then the objects and links shown in figure 5.2 would be displayed. |
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| 6.4.1.2 Finding paths that connect two specified objects
If Saeen was to be charged with participating in a bombing plot and the police suspected that Mars was also involved, the investigative officer(s) would be likely to want to know if, and how, Mars and Saeen are connected. Paths in the database connecting two specified entities already on the browsing canvas may be displayed using all path facility as shown in Figure 6.5. [Text accompanying Figure 6.5] Figure 6.5. The using all path facility to display all those paths in the database that is displayed in Fig. 2. that connect the objects representing Saeen and Mars. |
5.2.4 Finding paths that connect two specified objects
If Sandra was to be charged with participating in an armed robbery and the police suspected that Mary was also involved, the investigating officer(s) would be likely to want to know if, and how, Mary and Sandra are connected. Paths in the database connecting two specified objects already on the browsing canvas may be displayed using either the path facility, or the structured path facility. [Text accompanying Figure 5.3] Figure 5.3: The result of using the path facility to display all those paths in the database that is displayed in figure 5.1 of length four or less that connect the objects representing Sandra and Mary. |
continued from previous page. Note how Nm adapts the text to make it suitable for the terrorithm theme of the thesis: "Mary" becomes "Mars", "Sandra" becomes "Saeen" and an "armed robbery" becomes a "bombing plot". |
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| 6.4.1.3 Finding connections between groups of objects
Consider the following witness statement, “I saw Alam and Memon in a car with two other men. If Alam and Memon were two suspects in a terrorist plot then the police would like to identify the two other men. Support for finding connections between groups of objects is provided by this facility. Consider the witness statement above, using this facility to retrieve objects that are instances of the person object class and connected to the objects Victoria Garage, Saeen, London Gym, and Donald as shown in Figure 6.6. Thus, Saeen and Donald are identified as possible companions of Alam and Memon. |
5.2.5 Finding connections between groups of objects
Consider the following witness statement, “I saw Alan and Mike drinking in the King George public house with two other men. They left in a van with Kelly Building Contractors written on the side”. If Alan and Mike were two suspects in an armed robbery then the police would want to identify the two other men. Support for finding connections between groups of objects is provided through the centre facility. [...] Consider the witness statement above. Using the centre facility to retrieve objects that are instances of the person object class and connected to the objects Mike, Alan, the King George, and the Kelly Building firm by a path of length three or less would result in the objects and links shown in figure 5.5. Thus Joe, Richard and Ronald are identified as possible drinking companions, [...] |
continued from previous page adapted to "terrorism research" and using a slightly changed example, otherwise nearly identical |
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