Configuring the Player

Keeping subsets on restart

By default, if you have chosen one or more subsets during an identification and you click the Restart button or choose Restart from the Key menu, the subsets will be retained when the key is restarted. If instead you would like any subsets to be reset (so the key is restarted using all features and entities), uncheck the Keep Subsets on Restart option on the Key menu.

Allowing misinterpretations

In Lucid keys, some entities may be scored as having a feature by misinterpretation. For example, some groups of wasps are distinctive in having a strikingly narrowed section or “waist” between the thorax and abdomen, while in other groups of wasps and in most other insects there is no such narrowing. However, some members of the “waisted” wasps, such as the common honeybee, have a very short waist that is almost hidden by the other body segments and is easily overlooked.

If a key to wasps has a feature Waist present/absent, there is a danger that the waist on a honeybee would be overlooked by a user who would incorrectly describe their specimen as not having a waste. This could result in a misidentification.

To prevent such errors, the key’s builder will score the honeybee as Waist present (true) and Waist absent (by misinterpretation). The Lucid Player treats the by misinterpretation score as though it were a true score, so the honeybee will be retained in Entities Remaining even if the waist is overlooked.

However, another user - who is more experienced in identification - may wish to have such misinterpretations ignored and to only see a list of all wasps that truly lack a waist. In this case, the honeybee should be removed from Entities Remaining.

The Lucid Player allows users to select these different modes of operation through the Allow Misinterpretations item of the Key menu. With Allow Misinterpretations checked (the default behaviour), entities scored for a state using the by misinterpretation score will remain in Entities Remaining when the state is selected; with Allow Misinterpretations turned off, such entities will be discarded.  

Retaining uncertain entities

In Lucid keys, some entities may be scored as Uncertain for some states. For example, a key to plants may include features concerning fruits, but some rare species may never have been observed at the fruiting stage when the key was being built. In this case the builder of the key would score fruit features and states for such entities as Uncertain.

In normal identifications, it is important for the Lucid Player to treat entities scored as uncertain for a state in the same way as entities scored present for the state. Using the example above, a user of the key may have a specimen of the rare species that does have fruits, and hence may be able to address the fruit features. In such a case, the species should remain in Entities Remaining even though the key builder could not properly score the fruit features.

However, another user may wish to have such uncertain scores ignored and to only see a list of all species that are known to have fruits of a particular shape or colour. In this case, the species with unknown fruits should be removed from Entities Remaining.

The Lucid Player allows users to select these different modes of operation through the Retain Uncertains item of the Key menu. With Retain Uncertains checked (the default behaviour), entities scored for a state using the uncertain score will remain in Entities Remaining when the state is selected; with Retain Uncertains turned off, such entities will be discarded.

Setting the Best mode

Lucid3 has two modes of the Best function (for more information on Best, see the topic Finding the best feature – the Best functions). Find Best will search for and open the best feature to address next, while leaving the features list in its original order, while Sort Best will reorder the features list from best to worst.

To set which Best mode to use, choose either Find Best or Sort Best from the Best Mode option of the Features menu.

Note that Sort Best requires that the Player is in List View.

The Lucid3 Matching Methods

Lucid3 matches entities against selected features to determine which entities match and which do not.

Two options, accessed through the Match Method option of the Key menu, allow you to vary the way the Lucid3 Player handles the matching.

Using the Any State matching method, entities will be kept in Entities Remaining if they match any chosen state of a feature. Using the All States matching method, entities will only be kept in Entities Remaining if they match all chosen states of a feature.

To understand these modes, consider a feature Flower colour with the following states:

Flower colour
white
red
blue
yellow

Consider three entities e1, e2 and e3 that have been scored by the key’s builder as follows: e1 has been scored for blue only, e2 has been scored for yellow only, while e3 has been scored for both blue and yellow.

Using the Any State match method in the Player and choosing the state blue, e1 and e3 will remain in Entities Remaining (since both are scored as having blue flowers) while e2 will be moved to Entities Discarded. If you choose instead the state yellow, e2 and e3 will remain in Entities Remaining while e1 will be moved to Entities Discarded. Finally, if you choose both states blue and yellow, all three entities will remain in Entities Remaining (that is, the Player is returning all entities scored for either blue or yellow)

By contrast, using the All States match method and choosing the state blue, only e1 will remain in Entities Remaining (since only it is scored for only blue) and e2 and e3 will be moved to Entities Discarded.  If you choose instead the state yellow, only e2 will remain in Entities Remaining while e1 and e3 will be moved to Entities Discarded. Finally, if you choose both states blue and yellow, only e3 will remain in Entities Remaining while e1 and e2 will be moved to Entities Discarded (that is, the Player is returning only entities scored for both blue and yellow).

The normal matching method for most identifications is Any State, as this allows more flexibility between the scores given by the key’s builder and the answers provided during the identification. In some circumstances, you may wish to change the mode to All States. This can be done at any time. You should be careful to understand how this method works before changing to it.

Note also that some authors may set All States as the default Match Method and have scored their keys, such as diagnostic keys, on this basis.  In this case, changing the Match Method will cause the key to operate in a very different way from that intended by the author.

The Lucid3 Sorting Methods

Lucid3 matches entities against each selected feature to determine which entities match and which do not.

Two options, accessed through the Sorting Method option of the Entities menu, allow you to vary the way the Lucid3 Player reports the results of the matching.

In a Filtered sort, entities that do and do not match the selected features are sorted into two lists, Entities Remaining and Entities Discarded respectively.

In a Ranked sort, all entities are listed in the Entities Remaining panel (and the Entities Discarded panel is hidden). Entities are prefixed by their percentage match to the selected features (when using the Any State matching method) or selected states (when using the All States matching method). (For more information on the matching methods, see the topic Lucid3 Matching methods above)

The entities in a Ranked sort are ranked by their percentage match value. For example, if an entity matches all the selected features it will have a match value of 100% and will appear in the top rank of the Entities list. If another entity matches half the selected features (or states) it will have a match value of 50% and will be ranked lower in the list.


Entities sorted using the Filter Method

Entities sorted using the Ranked Method

Automating Best and Prune

The Best and Prune Redundants functions by default are only applied when you click the appropriate button or menu item.

However, you may automate these functions, so they are applied whenever a state is chosen. With these automated, after addressing each feature the Features Available list will be automatically pruned of redundant features and reordered to show the next best feature.

To set Best and Prune Redundants to be automatically applied, check the menu items Auto Best and Auto Prune from the Automate item of the Features menu.

If you need to choose several states from one feature before applying the Best and Prune functions, hold down the Control key while choosing the states. The automated functions will be paused until the control key is released.

Internationalisation

The Language option in the View menu opens a dialog allowing you to select a display language from any available language files bundled with the key. Selecting an alternate language will update the user interface with the translated strings contained within the language file.

Fonts

The Font option, located in the View menu, allows you to select an alternative font for the user interface. Certain language files, such as Eastern Asian languages, require extended characters to display correctly. It is important to select a suitable font when using these languages.

The Font Size option, also located in the View menu, allows you to increase or decrease the font size for the trees.