2.5 Report File

The ROCS report file format appears as a tab-delimited file with the following fields. Since the names of the query and the hits are of indeterminate length, fixed size fields for these names could result in loss of information. Unfortunately this gives a file that is hard to read in a terminal session, but it can easily be read into a spreadsheet program or into the data manager in VIDA.

Name: This is the name of the database molecule. If the database contains multi-conformer molecules, the specific conformer index is appended to the molecule name with an underscore.
ShapeQuery: The is the name of the query molecule. If the query is a multi-conformer molecule, then the specific conformer index is appended to the molecule name with an underscore.
Rank: The numerical ranking in the hitlist, based on the chosen score to sort by. If no changes are made, this is based solely on shape Tanimoto. Can be altered by using -rankby command line switches. If the -stats command line switch is used with 'best' or 'all', data is written into the report file in the order that the search is performed. If no hitlist was used in the calculation, this field will be 0 (zero).
ShapeTanimoto: This column gives the shape Tanimoto, a value between 0 and 1 as calculated by equation (1.6).
Tversky(d): Tversky is calculated using equation (1.7) with the database molecule as the main self-overlap with beta = 0.95.
Tversky(q): Tversky is calculated using equation (1.7) with the query molecule as the main self-overlap term with alpha = 0.95.
ScaledColor: In order to provide a color score somewhat independent of the actual color force field definition, a scaled color value is calculated by taking a hit's actual score value and dividing it by the color score of the query molecule against itself. Since the query self-color is a theoretical maximum value, the scaled color score is bounded between 0 and 1 like the Tanimoto coefficient.
ComboScore: To provide a score that includes both shape fit and color, the shape Tanimoto is added to the scaled color score, resulting in the combo score. This has a value between 0 and 2 and is the score used for ranking the hitlist when the -rankby combo command line switch is used.
ColorScore: This column provides the actual color score. Since differing color force field files can use different strengths for the color forces and since each molecule may have a different number of color atoms, there is no upper bound on this score. By default, the color score is calculated by looping over all the color atoms in the query molecule and summing the single best color interaction with the hit molecule. This leads to scores that mirror the one-to-one correspondence of features normally seen in pharmacophore matching programs. To included all possible interactions in the color score, use the -allcolor command line switch.
SubTan: One additional score can be calculated by giving the -subtan commandline argument. Since there is an additional time cost for this calculation, it is not included by default. Subtan is defined by taking the positions of the query and dbase molecule at the final overlay and removing all dbase atoms greater than 1.5 Angstroms from any query atom. Then a shape Tanimoto calculation is performed using these 2 structures and this Tanimoto coefficient is recorded as SubTan. Note that this has the effect of raising scores for small queries against much larger dbase molecules. In some respects, this is similar to Tversky for a sub-shape match, but does result in different rankings than Tversky. It is recommended that for searches involving a small query against a dbase of large molecules that both Tversky and SubTan be considered.
Overlap: This is the absolute value of volume overlap between the query and the dbase molecule. The value is in arbitrary units, and is most useful when using a grid as query.
DBConformerIndex: By default, the actual conformer index of each hit is appended to the molecule title. If the -conflabel sdtag or -conflabel both is specified, the conformer index will appear in this column.