The following table describes the system's menu commands. Note that the commands and options available vary between each stage of the analysis process.
| Menu Command | Description |
| File: Import Data | Starts the Data Import Wizard, allowing the user to import data. |
| File: Export Results | Exports the rules or itemsets in CSV format suitable for importing
into a spreadsheet. (Only available after a search has been completed.) |
| File: Exit | Exits from the application. |
| Edit: Undo | Undo the last edit action |
| Edit: Cut | Cuts selected text from a text box for subsequent pasting. |
| Edit: Copy | Copies text from a text box for subsequent pasting. |
| Edit: Paste | Pastes the most recently cut or copied text to the current selection point in a text box. |
| Edit: Select All | Selects all text in the current text box or all items in the currently selected 'Values Allowed' list. |
| Modes: Search for Rules | Specify that the next search should search for rules. |
| Modes: Search for Itemsets | Specify that the next search should search for itemsets. |
| Modes: Search by Leverage | Set the search mode to search by leverage. |
| Modes: Search by Lift | Set the search mode to search by lift. |
| Modes: Search by Strength | Set the search mode to search by strength. |
| Modes: Search by Coverage | Set the search mode to search by coverage. |
| Modes: Search by Support | Set the search mode to search by support. |
| Modes: Filter-out None | Set the filter mode to not filter out any rules or itemsets. |
| Modes: Filter-out Redundant | Set the filter mode to filter out redundant rules and itemsets. |
| Modes: Filter-out Unproductive | Set the filter mode to filter out unproductive rules and itemsets. |
| Modes: Filter-out Insignificant | Set the filter mode to filter out insignificant rules and itemsets. |
| Modes: Filter-out Unsound | Set the filter mode to filter out unsound rules and itemsets. |
| Action: Start Search | Start the search for rules or itemsets. |
| Action: Stop | Cancels the data import or search process. |
| Action: Take Snapshot | During a search, saves to a file the rules or itemsets that have been found so far. |
| Action: Compile Value Counts | Saves to a file a list of the items or attribute-values together with counts of the frequency with which they occur in the data. |
| Preferences: Search Defaults | Changes the default settings for the search options. |
| Preferences: Rule Holdout Evaluation Settings | Changes the default settings for holdout evaluation of rules. |
| Preferences: Itemset Holdout Evaluation Settings | Changes the default settings for holdout evaluation of itemsets. |
| Preferences: Output Format | Changes the format in which rules are displayed in the output file. |
| Preferences: Output Viewer | Changes the application that is launched to display the output file. |
| Preferences: Interface Options | Changes the behavior of the user interface. |
| Preferences: Restore Defaults | This menu item restores to the factory defaults all options that can be set under the Preferences menu and defaults that can be set within the Data Import Wizard. |
| View: Toolbar | Shows or hides the toolbar. |
| View: Status Bar | Shows or hides the status bar. |
| Help: Getting Started | Launches the default web browser to view documentation for first-time users. |
| Help: Help Topics | Starts the help system. |
| Help: Tutorial | Launches the default web browser to view the tutorial. |
| Help: Import Example Data | Starts the Data Import Wizard, allowing the user to import the example data used in the tutorials. |
| Help: About Magnum Opus | Displays version and copyright information. |
The following table describes the interface elements that are available once data has been imported..
| Interface element |
Control Type |
Description |
| Search for: |
Combo Box |
Selects between searching for rules or itemsets. |
| Search by: |
Combo Box |
Selects between search modes. |
| Filter out: |
Combo Box |
Selects between filter modes. |
| Maximum no.: |
Textbox |
Places an upper limit on the number of rules or itemsets that will be returned. Magnum Opus will find this number of rules or itemsets, unless too few satisfy the other constraints. |
| Maximum size: |
Textbox |
For attribute-value data, limits the number of attributes that may
appear on the LHS of a rule or in an itemset. For transaction data, limits the number of items that may appear on the LHS of a rule or in an itemset. |
| Minimum leverage: |
Textbox |
Places a lower limit on leverage (expressed as a proportion of the data). Rules or itemsets with lower leverage will be discarded. |
| Minimum leverage count: |
Textbox |
Places a lower limit on leverage (expressed as a number of cases). Rules or itemsets with lower leverage will be discarded. |
| Minimum coverage: |
Textbox |
Places a lower limit on coverage (expressed as a proportion of the data). Rules or itemsets with lower coverage will be discarded. |
| Minimum coverage count: |
Textbox |
Places a lower limit on coverage (expressed as a number of cases). Rules or itemsets with lower coverage will be discarded. |
| Minimum support: |
Textbox |
Places a lower limit on support (expressed as a proportion of the data). Rules with lower support will be discarded. |
| Minimum support count: |
Textbox |
Places a lower limit on support (expressed as a number of cases). Rules with lower support will be discarded. |
| Minimum strength: |
Textbox |
Places a lower limit on strength. Rules with lower strength will be discarded. |
| Minimum lift: |
Textbox |
Places a lower limit on lift. Rules with lower leverage will be discarded. |
| Use m-estimate |
Check Box |
If checked, Bayesian m-estimates are used for strength and lift. |
| Values allowed on LHS / Values allowed in itemset: |
Listbox |
For attribute-value data, limits to those highlighted the
attribute-values that may appear on the LHS of a rule or in an itemset.
For transaction data, limits to those highlighted the items that may appear on the LHS of a rule or in an itemset. |
| Values allowed on RHS: |
Listbox |
For attribute-value data, limits to those highlighted the
attribute-values that may appear on the RHS of a rule or in an itemset.
For transaction data, limits to those highlighted the items that may appear on the RHS of a rule or in an itemset. |
| © G I WEBB & ASSOCIATES 1999-2007 | Last updated January 2007 |
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