SHAKEN gpd 07170201

SHAKEN Critique Scores

Critique Scores

SHAKEN allows the user to associate critiquing scores with Patterns through its Properties mechanism. SHAKEN recognizes twenty-four "critique dimensions". They are:

A Pattern is rated on one or more of these dimensions. Ratings are taken from a four-point scale: very poor, poor, good, very good. For example, a Pattern might be rated poor with respect to Risk but very good with respect to Time-Constraints.

The rest of this document is meant as a guide to show how to associate critique scores with a Pattern by way of an example. The example Pattern may be overly simple (a Brigade crossing a narrow bridge), but it serves to illustrate critique scores.

The Pattern in the example is called Brigade-on-Bridge. It was defined as a new concept, based on the more general concept of Pattern. Since it was based on Pattern, it automatically includes the knowledge associated with Pattern. Right-click on Brigade-on-Bridge and select Show Complete Description to see what knowledge is associated with it.

Every concept built from Pattern automatically has a Critique-Score-Value associated with it.

In order to express the knowledge that having a Brigade cross a bridge is dangerous, we would like to give Brigade-on-Bridge a rating on the Risk dimension. To associate a Risk rating with Brigade-on-Bridge, right-click on the Critique-Score-Value and select Properties... from the menu.

A new window pops up called Critique-Score-Value Properties. There are three "tabs" near the top of the window. Click on the tab called Values. This is where you are allowed to add, change or remove critique dimension ratings. To choose a rating of verypoor, poor, good or verygood to associate with the rating, you must first select Critique-Score-Value in the box at the bottom left of the Critique-Score-Value Properties window.

You now must specify the critique dimension you wish to rate. Click on the Specialize... button in the Critique-Score-Value Properties window.

A new window pops up called Specialize concept. Type in the name of the critique dimension you want to rate. You must type in one of the twenty-four dimensions listed at the beginning of this document, and it must be typed in exactly as shown (hyphens and capitalization are important).

The last step is to choose one of the four rating values. These appear in a drop-down menu as *rating-verypoor, *rating-poor, *rating-good, *rating-verygood.

To store your rating, click on the Add button in the Critique-Score-Value Properties window. You should see your critique score of *rating-poor Risk ("poor with respect to Risk") appear under Defined Properties. Click on the Ok button when you're done.

Your critique score rating should appear in the green Critique-Score-Value box.

You can specify ratings for as many of the twenty-four dimensions as you want on a Pattern. Simply repeat the steps in this example typing in a different critique dimension in the Specialize concept window. All the ratings you define will appear in the green Critique-Score-Value box.