Ability to lump aspectual pairs together when checking target lemmas

[arthurian]

It should be possible to lump aspectual pairs together (e.g. начинать|начать) when checking target vocabulary against the story text. In other words, if начать (perfective) is listed in the target vocabulary, but a form of начинать (imperfective) is used in the story text, then it should be marked as used.

The database includes aspect and aspect_counterpart for lemmas, so it should be possible to make the connection.

Question: Should this be an optional ability that can be toggled? Is there a scenario where you wouldn't want this behavior?

Scenario: Imperfective used in story, perfective listed in vocabulary

Input Story:

Я начинаю урок завтра.

Input Vocabulary:

начать
завтра

Actual Output	Desired Output
Я начинаю урок завтра.	Я начинаю урок завтра.

The word начинаю is used in the story, and has lemma начинать (imperfective). But the vocabulary only lists начать (perfective). It should be recognized that начинать|начать form an aspectual pair, and therefore начинаю should be marked in the story as used.

Scenario: Perfective used in story, imperfective listed in vocabulary

Input Story:

Я начал учиться вчера.

Input Vocabulary:

начинать
вчера

Actual Output	Desired Output
Я начал учиться вчера.	Я начал учиться вчера.

The word начал is used in the story, and has lemma начать (perfective). But the vocabulary only lists начинать (imperfective). It should be recognized that начинать|начать form an aspectual pair, and therefore начал should be marked in the story as used.

[stevenclancy]

Hi Artie, Is it helpful if I comment here (more helpful than in emails?)?

[stevenclancy]

Yes, the above is a good description. I could see the desire by some users NOT to lump together the aspectual pairs and just to deal with the lemmas for the verbs, as in начинать, начать as individual words, but most of the time I think most teachers and students should be considering these as parts of a combined lemma.

[arthurian]

@stevenclancy This is probably most helpful for following up on specific issues/functionality, but generally I think email is probably best, at least for initial discussion and feedback.

Ok, so the behavior should be implemented as the default (treat them as parts of a combined lemma), with the option to switch it off, should the user want to treat the verbs as individual words.