User manual
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1. box to select a file in which to save them or enter a file name in the File Name field and press the Save Rules button Alternatively e Select the rules within the text area either with the mouse or by pressing Ctrl a when the cursor is within the text area and press Ctrl c to copy the rules to the system clipboard from where they can then be pasted into a text editor or directly into the JessTab console2. PMappingTab Instruction Manual David Corsar Derek Sleeman First Draft July 8 2005 Contents 1 Introduction 2 Setting up PJMappingTab 2 1 Installing PJ Mapping lab za 2 2 rk he coL t erben 2 2 Including PJMapping Tab in the Current Prot g Project 2 3 Removing PJMappingTab from the Current Prot g Project 3 Using PJMappingTab 3 1 Performing Rule Abstraction asco cO EC hak pp ko EE RU 3 2 Importing The Ontology 2 ue uie aliud d eue oe ere d za 3 2 1 Importing The Current Ontology 3 2 2 Importing The Ontology from Another Project Do Importing Rules Lu a eet cerato D eed rea RO IA s eru 3 4 Creating Abstract Rules 24 xs RR 35 Saving Abstract Poul go avin aie we ee vu xs rem RBS 3 6 Performing Rule Mapping 2 4 425 xA E ARE RES 3 7 Importing The Ontology to Map To 2a a ax 3 8 Importing Abstract Rules utn ox e REESE S 3 90 Mapping a e Abe de ed ae SN et oret le xb desit de desi ars 3 9 1 Automatic Mapping 24 vd ser eR a eee ERA 3 9 2 Setting the Automatic Mapping Properties 3 9 3 Manual Mapping s Lud us aub EAD Ih bos 3 10 Executing the Mappings xo xus che Rhe eher E 3 10 1 Saving the New Rules llle N wWwnn Nd COONNDWMDOOTNH AK PR wWWwWw 1 Introduction PJMappingTab Prot g Jess Mapping Tab provides an environment which en ables the reuse of JessTab rules across multiple ontologies from within the Prot g 2 1 ontology creation and
3. b located within the Mapping tab 2 Enter the desired variable name in the text field directly to the right of the variable name that is to be changed Take care to ensure the correct variable indicator is added for a multislot and for a regular slot at the start of the name Do not worry about the slightly irregular pattern as the is removed during the mapping process 3 10 Executing the Mappings Once all the class slot and variable mappings have been defined the rules need to be updated to reflect them During this process all the abstract names in the rules are changed to the names of the class slot they have been mapped to as are the variable names To execute the mappings press the Execute Mappings button in the Mapping tab After a short pause while the rules are updated the new rules are displayed The main cause of this pause is that PJ MappingTab invokes the automatic mapping algorithm again to ensure consistency between the rules and the display 3 10 1 Saving the New Rules Once all the class and slot mappings as well as any desired variable mappings have been executed the rules can then be used via the JessTab against the ontol ogy that they were mapped to To achieve this the rules must first be removed from PJMappingTab and entered at the JessTab console as normal The rules can be removed by one of the following e Press the Save Rules button in the Mapping tab Use the resulting dialog
4. cross should appear in the box to signal it has been selected 4 Press OK PJMappingTab should be now be displayed beside the other tabs in the main Prot g window 2 3 Removing PJMappingTab from the Current Prot g Project PJMappingTab can be removed from the Prot g project at any time just like any other tab To achieve this 1 Select Project 2 Select Configure 3 In the following dialog box ensure the Tab Widgets tab is select This tab displays all the tab plug ins that can be included in the project The check box next to PJMappingTab should have a tick in it to show it is currently included click on it to remove it 4 Press OK PJMappingTab has now been removed and should not feature in the Prot g window 3 Using PJMappingTab This section describes how PJMappingTab can be used to enable the reuse of a set of JessTab rules against different ontologies within the Prot g environment Once a set of JessTab rules have been developed for use against one ontology PJMappingTab can help prepare the same set of rules for use against another ontology This process comprises of two phases the rule abstraction phase and the rule mapping phase How these phases are achieved with PJMappingTab is described below 3 1 Performing Rule Abstraction The following section describes the rule abstraction phase of the process In this phase a set of JessTab rules designed to be ran against one ontology are combined with
5. desired file select it and press the Open Prot g KB button or press Cancel to cancel the operation If the ontology is imported successfully the names of its classes and slots are displayed in the keywords list 3 8 Importing Abstract Rules Before a set of abstract rules can be mapped to the ontology they must be im ported into PJMappingTab To accomplish this Select the Abstract Rules tab located at the bottom half of the Original tab Load the rules from a file by pressing the Load Rules button locate and select the desired file and press the Load Rules button The contents of the select file are then read and displayed in the text area of the Abstract Rules tab Note if performing mapping directly after completing the rule abstraction process on the newly abstracted rules this stage can be skipped 3 9 Mapping Once both the abstract rules and the keywords have been imported the mapping interface is displayed in the Mapping tab and can be used to aid in the mapping by having PJMappingTab search for and suggest possible matches based on lexical analysis and or by manually defining mappings The mapping interface is split into two main sections at the top are details of the individual mappings available while the bottom displays the current state of the rules which are updated every time the mappings are executed 3 9 1 Automatic Mapping Once the abstract rules and the mapping keywords have been imported PJMap ping Tab s
6. earches the abstract rules extracting the classes and slots defined within them along with the slot data types and suggests mappings between these ex tracted classes and the classes and slots imported from the ontology displaying the results in the Mapping tab This tab can then be used to complete and or correct the suggested mappings and execute them upon the abstract rules The suggested mappings are displayed in the Concept Mappings tab of the Mapping tab The details of the suggested mapping for each extracted class is displayed which includes the suggested mapping for the class name along with the suggestions for each of the classes slots If PJMappingTab has been unable to determine a mapping for any slot or class the target description is has no suggested mapping and will required to be mapped manually 3 9 2 Setting the Automatic Mapping Properties There are two properties that can be set with regard to the automatic map ping functionality of PJMappingTab These are the location of the dictionaries for WordNet used in looking up alternatives for the keywords and the word constituent limit see below for an explanation of the word constituent limit Setting the WordNet Dictionaries The WordNet dictionaries are crucial for the production of accurate suggestions by the automatic mapping function Although it may work without them in order to achieve best results they are required Sometimes the dictionaries are not located on
7. editor environment This document provides instruc tions on how to use the various facilities of PJMappingTab to achieve this 2 Setting up PJMappingTab The first section of this manual covers installing PJMappingTab how to include it in Prot g project and then how to remove it 2 1 Installing PJMappingTab Before PJMappingTab can be used the relevant files need to be installed into the Prot g plugins folder Assuming starting with the pjmappingtab zip file 1 Unzip the contents of pjmappingtab zip into the plugins folder of the Prot g directory for Prot g 2 1 this is typically located somewhere like C Program Files V Protege 2 1 plugins 2 The plugins folder should now contain a folder called uk ac csd abdn pjmappingtab which should contain files named jazzy core jar JWord jar and pjmap pingtab jar and a folder named wordnetdata which should contain the 21 WordNet dictionary files 2 2 Including PJMappingTab in the Current Prot g Project Assuming that PJMappingTab and its associated files have been installed cor rectly including PJMappingTab in the current Prot g project is achieved in the same manner as adding any plug in 1 From the Prot g menu bar select Project 2 Select Configure 3 In the following dialog box ensure the Tab Widgets tab is select This tab displays all the tab plug ins that can be included in the project Click the check box next to PJMapping Tab a tick or
8. h contains the desired mapping 3 If none of the alternative mappings are suitable or no others are suggested it is possible to define a mapping manually To do this use the drop down lists in the Manual column a First select the desired class from the top drop down list The other drop down lists for the slots automatically update to contain only slots that are suitable for the slot that is being mapped This is to ensure slots in the rules with a certain type are mapped to slots of the same or compatable slots b Use the remaining drop down lists to select the target slot for each of the slots c Ensure the radio button at the bottom of the Manual column is se lected 4 Once the desired mapping has been selected the radio button below it will be a filled circle press the OK button to confirm the change or Cancel to cancel it 5 The details of the mapping in the Concept Mapping tab will now be changed to reflect the new mapping Variable Mappings Although not required by JESS it is sometimes desirable to change the names of the variables in the rules to make the rules clearer This step is not necessary as the prefix s are set during the abstraction process to indicate that they are variables to JESS as well as PJMappingTab and are set to reflect if the slot is a multislot or not The variable mappings are listed in the Variable Mappings tab and can be altered by in the following way 1 Select the Variable Mappings ta
9. n completed successfully the new set of rules is displayed in a text area in the Abstract Rules tab If this has been completed successfully each class and slot name in the rules will be slightly 4 modified as will each variable name Each class and slot name will have had a special prefix added to it to indicate that it is a class or slot name and each slot name will have the slot data type appended to it Similarly each variable now has a special prefix to indicate it as a variable name within the rules 3 5 Saving Abstract Rules For the new abstract rules to be of any use they need to be saved to a file so they can be stored distributed and used elsewhere against other ontologies There are two ways of achieving this e Ensure the abstract rules are being displayed by clicking the Abstract Rules tab press the Save Rules button PJMappingTab then requests the name of a file to save the rules to so navigate to where the file should be saved enter a file name and press the Save Rules button To cancel the save operation press the Cancel button Alternatively e Select the rules within the text area of the Abstract Rules tab either with the mouse or ensuring the focus is within the text area with Ctrl a and press Ctrl4 c to copy the rules to the system clipboard They can then be copied from there into a text editor program and saved from there 3 6 Performing Rule Mapping The following section describes the second stage of the
10. reuse procedure of PJMap pingTab This stage may be viewed as the reverse of the abstraction process and involves taking a set of abstract rules an ontology from a Prot g project and mapping the abstract rules to that ontology Specifically the class names mentioned in the abstract rules are mapped to class names in the ontology and slots mentioned in the abstract rules are mapped to slots in the ontology PJMap pingTab not only provides some assistance in the mapping procedure by attempt ing to automatically map between the classes and slots based on their respective names but it also provides a graphical interface for performing the mapping manually 3 7 Importing The Ontology to Map To In order to map the abstract rules it is necessary to import the ontology on to which they are to be mapped As with abstraction the ontology is imported from a Prot g project achieved in the following way 1 Select the Mapping Keywords tab There are now two options im port the ontology from the project currently loaded in Prot g or from a separate Prot g project e To import the current ontology press the Import from Current KB button The ontology is then automatically imported e To import the ontology from a project saved on disk press the Import from External KB button PJMappingTab then asks for the Prot g Project file extension pprj from which to import the ontology Use the displayed dialog box to navigate to the
11. rget ontology it may be the case that the automatic mapping facility suggests mappings for only a subsection of all the classes and slots used in the abstract rules Additionally it may be the case that the suggested mappings are incorrect and need to be changed to achieve the desired functionality Both of these tasks can be achieved by using the manual mapping facilities of PJMapping Tab Class and Slot Mappings Each class and slot mapping has to be performed individually Each mapping is divided into two components the name of the class slot as displayed in the rules that is to be mapped and a list of the relevant names in the ontology that it can be mapped to To change a suggested mapping 1 For the class slot that is to be changed press the Alt Mappings for X button where X is the name of the class if it s a slot being changed x is the name of the class the slot belongs to located below the details of the mapping for the relevant class 2 This displays the alternative mapping dialog which displays a selection of alternative mappings which were created during the automatic mapping stage do not worry if there are no other mappings displayed it simply means no other mappings were determined The Name column lists the class slot name the suggestions on the same row match up to the sugges tions are in the Suggestion 1 Suggestion n columns To use an alter native mapping select the radio button on the bottom row of the column whic
12. rocess PJMapping Tab requires the rules that are to be abstracted These are imported to PJMappingTab in the following way 1 In the Original tab select the Original Rules tab in the lower half of the screen This is where the original rules will be added To do this either e Click in the text area to ensure the cursor is there there will be a flashing vertical bar in the top left corner and press Ctrl v to paste the rules from the system clipboard Note this method requires the rules to have been copied to the system clipboard before performing this step Alternatively e Press the Load Rules button This allows a file to be selected whose contents will be read in and assuming they are read successfully the contents will be displayed in the Original Rules text area 3 4 Creating Abstract Rules The final step of the rule abstraction process requires the class and slot names and slo data type information from the ontology to be merged with the rules so that the rules can be automatically marked to produce a set of abstract rules To perform the rule abstraction press the Make Abstract Rules button located under the Keywords list It may be the case that the Make Abstract Rules button has not been automatically enabled This is due to PJMappingTab not detecting that both the rules and the ontology have been imported If this happens the simplest solution is typically to import the ontology again Assuming the abstraction process has bee
13. that ontology to make a set of abstract rules These abstract rules are later used in the mapping phase where they are tailored so they can be run against another ontology 3 2 Importing The Ontology For the abstraction process to be successful PJMappingTab requires both the set of rules and the ontology that they were designed for as it uses the class and slot names in the ontology along with the slot data types to perform the rule abstraction The ontology can be imported from one of two locations the project currently loaded in Prot g i e the one displayed in the Classes tab or from another Prot g project saved on disk 3 2 1 Importing The Current Ontology To import the current ontology in the Original tab press the Import from Current KB button The ontology will then be automatically imported and its class and slots names displayed in the keywords list 3 2 2 Importing The Ontology from Another Project To import the ontology from a separate project in the Original tab press the Import from External KB button The system then asks for the Prot g Project file extension pprj from which to import the names Use the dis played dialog box to locate the desired file select it and press the Open Prot g KB button or press Cancel to cancel the operation If the ontology is imported successfully its class and slot names are displayed in the keywords list 3 3 Importing Rules To complete the rule abstraction p
14. the hard disk where PJMappingTab expects them to find them by default they should be located at jProt g home plugins uk ac csd abdn pjmappingtab wordnetdata and so PJMappingTab needs to be updated with their current location To update the location of the dictionaries 1 Press the Auto Map Properties button on the Mapping tab 2 In the dialog that is displayed the current location of the WordNet dictio naries is given in a text field labelled JWordNet Dictionary location Press the button to the right of the text field 3 Use the file choice dialog to navigate to and select the folder containing the dictionary files 4 Press Open Check the location displayed is correct if it is press OK otherwise repeat steps 2 and 4 Setting the Word Constituent Limit The word constituent limit refers to the percentage of constituents two strings must have in common before a mapping is proposed between them The constituents of a string are the words that make up that string for example the string car_repair has car and repair as its constituents This level is set as a percentage of the total constituents in each string To set this value 1 Press the Auto Map Properties button on the Mapping tab 2 Use the Word Constituent Limit spinner to change the value to the desired level 3 Press OK 4 To cancel the operation at any time press Cancel 3 9 3 Manual Mapping Depending on the original application of the rules and the ta
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