Match on Criteria

Single Assignment Rule

When creating a composite with a single assignment rule, the user can use either Match on Criteria (OR) or Match on Criteria (AND) as they will both have the same effect.

Multiple Assignment Rules

When assigning multiple rules for a composite, the user must decide whether to include a portfolio if it meets one of the criteria, some of the criteria, or all of the criteria. In a simple case with two rules, the AND clauses would be used if the user wanted to ensure the portfolio adhered to both rules, while the OR clause would be used if the user wanted to include the portfolio if it adhered to at least one of the rules. This process becomes a bit more difficult with more than 2 rules.

To explain the assignment rules, we will work through the following simplified example:

Assignment Example

In the above table, we have abstracted out the criteria as the letters A-E, which stand for criteria like “If the Growth Weight of an account is between the numbers 0 and 5.”

The above composite criteria would join to become:

Assignment Example Result

To explain why this is the case, we must discuss:

  1. How the Boolean expressions link together criteria, and
  2. How parentheses are placed between the linked criteria.

Criteria are joined reading from right to left then top to bottom, and the final Boolean is ignored. So, the example above would become:

Assignment Example No Parenthesis

However, this is not yet correct since boolean expressions change depending on the placement of parenthesis.

2. How Parenthesis are Placed Between Linked Criteria

To place the parenthesis, we use the following convention: Parenthesis join OR clauses and are placed between AND clauses.

By placing parenthesis with this convention, we arrive at the completed criteria:

Assignment Example Result 2