The Match Score Computation displays the computation table matrix, a tabular representation of component scores and, if selected, a textual explanation describing how the final match score was determined. For more details on how how name matching works, see Understanding Name Matching.
For Name fields, the computation table matrix includes:
The tokens from Name 1 are listed down the first column, while the tokens from Name 2 are along the top row.
The shaded boxes highlight the token pairs selected during matching that produce the best score. A token pair is a token from Name 1 and its matching token from Name 2. Each shaded box contains a Match reason and a match value.
The top line indicates Match reason.
The match value takes into consideration the placement of the token in the score calculation. A penalty is applied if the tokens are out of order. When the tokens line up on the diagonal, they are all in order.
Under each token is a weight. The weightings determine how important the token pair match is in calculating the final score. For example, unusual tokens get a higher weighting than common names because it is more significant when they match and initials are weighted less than full names.
For more detail about the match score, select Explanation
You can modify the match parameters in real-time to see how each value impacts the final match score.
Rosette Match Studio and Rosette Name Indexer are turned to perform well in a variety of name matching scenarios. However, every use case uses different data with distinct match requirements. In Rosette Match Studio, you can easily modify and tune a set of the most common parameters, to improve the accuracy of matches.
To view and modify these settings:
Click on the settings icon 
in the upper right corner of the compare window.
Change the value or values of interest. You may have to scroll down to view the entire list of available parameters.
Compare.
Changes are applied to the pairwise match currently displayed; overall system search settings are not modified.
The default parameter values are based on the entity type (person, organization, or location) and the language.
Reset sets the values back to their default settings.
To save a set of parameter values, click on the copy url 
in the upper right corner. The url contains the parameter values.
This table lists the most common match reasons, but is not an exhaustive list of all possible match reasons.