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Rules for deictic relations

Deictic Rule 1:
(A type of relation D-simple)
A deictic expression is resolved into a time interpreted with respect to the dialog date (e.g., ``Tomorrow'', ``last week'').
\begin{figure}{\bf if} isDeictic({\em TU}) {\bf then} \\ {\hspace*{0.125in}}{\b... ... \lq\lq Let's meet tomorrow'', with an interpretation of Mon 24 Sept}\\ \end{figure}

Deictic Rule 2:
(A type of relation D-frame-of-reference)
A forward time is calculated with respect to today as a frame of reference.
Subcase i:

\begin{figure}{\bf if not} isDeictic({\em TU}) {\bf then} \\ {\hspace*{0.125in}... ...How about if we meet next Monday?'', interpreted as Monday, Sep 30} \end{figure}
Subcase ii:

\begin{figure}{\bf if not} isDeictic({\em TU}) {\bf then} \\ {\hspace*{0.125in}... ...\em in that the current date is also taken into consideration.} \\ \end{figure}




The following cover special cases not discussed in the body of the paper.

Deictic Rule 3:
(A type of relation D-simple)

\begin{figure}{\bf if not} isDeictic({\em TU}) {\bf then} \\ {\hspace*{0.125in}... ... return} $\langle$0.5, merge($TU$ , {\em newTU})$\rangle$\space \\ \end{figure}

Deictic Rule 4:
(A special case for handling end times) The mentioned time is not an interval; resulting frame's end dates correspond to the starting dates.
\begin{figure}{\bf if} (simpleTime({\em TU}) $\wedge$\space \{{\bf sday, sdate, ... ...\ {\em start time and the end time both refer to Fri 27 Sept.} \\ \end{figure}

Deictic Rule 5:
(A type of relation D-simple)

\begin{figure}{\bf if} at least one of \{{\em TU$\rightarrow$ SMIN, TU$\rightarr... ...{\em \lq\lq How about 3:00?'' resolved to 3:00 Mon 23 Sept} \end{tabular}\end{figure}

Deictic Rule 6:
(A type of relation D-simple)

\begin{figure}{\bf if}({\em TU$\rightarrow$ Name} $=$\space \{{\bf weekend}\}) $... ...e \\ {\hspace*{0.125in}}{\bf else fail}\\ \par {\bf else fail}\\ \end{figure}

% Ex: ``Is next weekend OK?'' resolved to Sat 29-Sun 30 Sept