the meaning of latent time about duckling

[shaoyx]

Hi @patapizza ,
Thanks for the detailed explanation.
For the first case, returning a non-latent token does help.

For the second case, as you suggested, adding an extra rule will works. However, the original source code has contained a rule called ruleIntersect :: Rule, which require two non-latent Time token. So return a non-latent token from ruleMonthNumericWithMonthSymbol also helps.

Therefore, removing the mkLatent function may be a good choice.

[patapizza]

Hi @simon0227,

Latent tokens are intermediate layers of final tokens. They potentially hold some information about the dimension, but the information found is not enough to fully express an instance of the dimension (think necessary vs sufficient conditions).

I'm not familiar with Chinese, though it looks like 月 is a symbol that indicates a month. In this case, this shouldn't be latent (as 'May' for English). Updating ruleMonthNumericWithMonthSymbol to return a non-latent token would help recognizing "5月" as Time.
To recognize "2017年5月" though, it would require an extra rule that takes a year, the symbol 年, and a month (does this make sense?). Strictly speaking, this doesn't require ruleMonthNumericWithMonthSymbol to return a non-latent token.

Hope this helps.

[patapizza]

Oh 年 is the year symbol. Sounds good, let's do that.

[shaoyx]

Yeah, 年 is the year symbol and 月 is the month symbol.