Table 2 Examples of generated heuristic rules from Chinese clinical texts

Chinese

约10天

[SLOT: prefix][SLOT: num][SLOT: day]

(‘+prefix+’)(\d{1,6})(‘+ dmy+’)

2014年10月5日

[SLOT: num][SLOT: year][SLOT: num][SLOT: month][SLOT: num] [SLOT: day]

(\d{1,4}[年]\d{1,2}[月]\d{1,2}[日])

约一个周期

[SLOT: prefix](LIST: 半|一|二|两|三|四|五|六|七|八|九|十|十一|十二|十三|十四|十五|二十|三十) < S: 个 > [SLOT: day]

(‘+prefix+’)(‘+num+’)(个)(‘+dmy+’)

第7、9、14天

[SLOT: prefix][SLOT: num] < SM: 、 > [SLOT: num] < SM: 、 > [SLOT: num][SLOT: day]

(‘+prefix+’)(((\d{1,6})(‘+u’、‘+’)){1,5}(\d{1,6})(‘+dmy+’))

English

2014–11-04

[SLOT: year] < SM: - > [SLOT: month] < SM: - > [SLOT: day]

d{1,4}) r’(− |-| -|- |)(‘+[month] + r’(− |-| -|- |)\ d{1,2}

November 2nd, 2016

[SLOT: month] < SM: >[SLOT: day](LIST: st, nd, rd, th) < SM:,> < SM: > [SLOT: year]

(‘+[month]+’(− |-| -|- |)\ d{1,2}(st|nd|rd|th)(, |,|)\ d{1,4})

May 3–5, 2013

[SLOT: month] < SM: >[SLOT: day] < SM:- > [SLOT: day] < SM:,> < SM: > [SLOT: year]

(‘+[month] + r’ \d{1,2}(− |-| -|-)\ d{1,2}(, |,|)\ d{2,4})

37 years old

<RULE: negative>

If context_distance([SLOT: num], [SLOT: age]) < n; Then filter out