Procedure$\left[\mathit{patentIDList}\right]$ = AbsoluteTemporalEventQuery($\mathit{invertedIndexCollection},\mathit{event},\mathit{period}$)

InputinvertedIndexCollection: The client for accessing ELII collection in MongoDB

event: The query event

period: The query period

OutputpatentIDList: The list of patient IDs after query

1: $\mathit{queryDocuments}=\mathit{invertedIndexCollection}.\mathit{find}(''“''''\$''\mathit{or}''”'':\mathit{event})$;

2: $\mathit{patentIDList}=\left[\right]$;

3: fordocumentinqueryDocumentsdo

4:  $\mathit{firstRecordTime}=\mathit{document}.\mathit{First}\_\mathit{record}\_\mathit{date}$;

5:  $\mathit{lastRecordTime}=\mathit{document}.\mathit{Last}\_\mathit{record}\_\mathit{date}$;

6:  $\mathit{startIndex}=0$

7:  $\mathit{endIndex}=\mathit{Length}(\mathit{document}.\mathit{Patient}\_\mathit{list})$

8:  if$\mathit{period}.\mathit{start}\_\mathit{date}$is notNonethen

9:  $\mathit{startIndex}=\mathit{period}.\mathit{start}\_\mathit{date}-\mathit{firstRecordTime}$;

10:  if$\mathit{startIndex}<0$then

11:   $\mathit{startIndex}=0$

12:  end if

13:  end if

14:  if$\mathit{period}.\mathit{end}\_\mathit{date}$is notNonethen

15:  $\mathit{endIndex}=\mathit{period}.\mathit{end}\_\mathit{date}-\mathit{firstRecordTime}$;

16:  if$\mathit{endIndex}>\mathit{Length}(\mathit{document}.\mathit{Patient}\_\mathit{list})$then

17:   $\mathit{endIndex}=\mathit{Length}(\mathit{document}.\mathit{Patient}\_\mathit{list})$

18:  end if

19:  end if

20:  $\mathit{patentIDList}.\mathit{add}(\mathit{document}.\mathit{Patient}\_\mathit{list}[\mathit{startIndex}:\mathit{endIndex}\left]\right)$;

21: end for

22: patentIDList = $\mathit{Unique}\left(\mathit{patentIDList}\right)$;

23: returnpatentIDList