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Table 5 The examples of learned patterns that are categorized into four types

From: A pattern learning-based method for temporal expression extraction and normalization from multi-lingual heterogeneous clinical texts

Language

Type

Structural pattern

Matching text

English

Time

with [TE] prior to

starting with 24 h prior to the patients admission

Date

discharged in [TE]

surgery patients discharged in 2015

Duration

study period [TE] - [TE]

study period May 1st, 2016 - May 21th, 2016

Set

issued on a [TE] basis

issued on a weekly basis

Chinese

Time

后[TE]内

在入院后 24小时内

Date

[TE]返院化疗

2014.11.3返院化疗

Duration

[TE]/次

3–5天/次

Set

[TE]检查

每三个月检查一次