Perform Textual Analysis

1. Download the attached document file OTV.txt, which describes the general business operations of OTV in advance.
2. Start Visual Paradigm for UML.
3. Create a new project by selecting File > New Project from the main menu. Name the project as OTV and press Create Blank Project button.
4. Right click on Textual Analysis in Diagram Navigator and select New Textual Analysis from the pop-up menu.
   
5. You can enter the problem statement in problem statement editor. Choose either type directly there, or import a text file. Let's try to import the downloaded text file. Click on the button Import File, select OTV.txt and click Open button.
   
6. The text is imported. Study the problem statement.
   
7. Now, identify all candidate actors that involve in the system. By reading the problem statement, we find the first candidate actor, premium member in the second paragraph. Highlight and then right click on it, and select Add text as Actor from the pop-up menu.
   
8. Check out the grid at the bottom. It lists the properties of extracted candidate object: Candidate Class (candidate object's name), Extracted Text (the word/ phrase it extracted from), Type (candidate type), Description, Occurrence (the number of times the word/ phrase appears in the problem statement) and Highlight (the highlight color of candidate object).
   
9. The second candidate actor general member is found. Again, add it as candidate actor.
   
10. In the last paragraph, we find the candidate actor administrator. Add text administrators as actor.
    
11. Now, identify candidate use cases. Candidate use cases usually name as a verb or verb+noun phrase. For instance, "watch any archived TV programs" in the second paragraph. Highlight and right click on "watch any archived TV programs", and select Add text as Use Case from the pop-up menu.
    
12. Search the text below and identify them as candidate use cases:
    

    Register as a general member

    Register as a premium member

    Watch both archived and live programs

    Upgrade himself to a premium member

    Remove his/her account

    Posting their opinion

    Receive monthly newsletter

    Update the program schedule

    Update the program

    Archive programs

    Monitor the delivery of newsletter

13. In order to distinguish the candidate objects in problem statement, we can change their highlight color. Let's select orange as the highlight color for candidate actors. Click Highlight cell of premium member and press the inverted triangle. Select orange from the combo box.
    
14. You may notice that some of the candidate actors and use cases can be renamed to make them shorter and more informative. Take candidate actor premium member as example, to rename a candidate actor, in the grid at the bottom, double click on premium member cell under Candidate Class and change it to Premium Member.
    
15. On the other hand, you can enter description for Premium Member. The text you typed in Description cell will become the documentation of Premium Member actor. For example, enter "A premium member can watch both archived and live TV programs for US $30 per month."
    
16. Rename the other candidates and their description as shown below:
    

    Candidate Class	Extracted Text	Description
    General Member	general member	A general member can only watch archived TV programs. In order to watch live programs, s/he should upgrade his/her membership to be premium member.
    Administrator	administrators	Administrator has the rights to update the TV program schedule, update and archive TV programs. S/He is responsible for mentoring the deliver of newsletter to premium members.
    Watch Archived Program	watch any archived TV programs	Members can watch the scheduled archived TV programs anytime.
    Register as General Member	register as a general member	It is free of charge to register as a general member.
    Register as Premium Member	register as a premium member	No application fee is applied for registering as premium member.
    Watch Live Program	watch both archived and live programs	Only premium members are allowed to watch live TV programs.
    Upgrade Membership	upgrade himself to a premium member	A general member can upgrade his/her membership to a premium member.
    Remove Account	remove his/her account	US$50 of administrative fee is applied when premium members remove their account.
    Post Opinion	posting their opinion	Premium members can post their opinion regarding TV programs on OTV's official website.
    Receive Newsletter	receive monthly newsletter	Premium members can subscribe monthly newsletter for US$300 per annum.
    Update Program Schedule	update the program schedule	Administrator keeps updating TV program schedule fortnightly.
    Update Program	update the program	Administrator keeps updating TV programs weekly.
    Archive Program	archive programs	Administrator keeps archiving TV programs weekly.
    Monitor Delivery of Newsletter	monitor the delivery of newsletter	Administrator is responsible for monitoring the delivery of newsletter.

    
    Up to now, the textual analysis should look like this:
    
17. Let's switch to candidate pane by clicking Candidate Pane View button. Candidate pane view is where you can visualize candidate objects for easy arrangement.
    
18. Right click on the background of candidate pane and select Tile Layout from the pop-up menu.
    
19. We are going to form a use case diagram with those candidate objects. Create a use case diagram through Diagram Navigator. Right click on Use Case Diagram and select New Use Case Diagram from the pop-up menu.
    
20. Open the Model Explorer (next to Diagram Navigator). Select all the candidate actors and use cases.
    
21. Drag them from Model Explorer and drop them all on the use case diagram. Rearrange the shapes to make the diagram alike the below image:
    
22. Associate actors with use cases. Finally, the diagram should look like the following:
    
23. Save the project. This is the end of the tutorial.

Resources

1. OTV.txt