Subtask Segmentation of Timed Up and Go Test for Mobility Assessment of Perioperative Total Knee Arthroplasty

. 2020 Nov 5;20(21):6302. doi: 10.3390/s20216302

Algorithm 1: Fragmentation modification algorithm in the knowledge-based postprocessing stage
Input:	An identified segments sequence $T U G = {(s u b t_{i} \| i = 1, 2, 3, \dots, N}$ , The ith subtask segment $s u b t_{i}$
Output:	A modified and identified segments sequence $M T U G = {(m s u b t_{i} \| i = 1, 2, 3, \dots, N}$ , The ith modified subtask segment $m s u b t_{i}$
1:	$s u b t_{1} = s s u b t_{1}$ // $s s b t_{1}$ is the semantic subtask of sitting.
2:	$s u b t_{N - 1} = s s u b t_{1}$
3:	$s u b t_{N} = s s u b t_{1}$
4:	for $i$ from 2 to $N - 2$ do
5:	if $s u b t_{i}$ != $s u b t_{i - 1}$ && $s u b t_{i - 1}$ == $s u b t_{i + 1}$ then
6:	$s u b t_{i}$ = $s u b t_{i - 1}$
7:	else if $s u b t_{i}$ != $s u b t_{i - 1}$ && $s u b t_{i + 1}$ != $s u b t_{i - 1}$ && $s u b t_{i + 2}$ == $s u b t_{i - 1}$ then
8:	$s u b t_{i}$ = $s u b t_{i - 1}$
9:	end if
10:	$m s u b t_{i}$ = $s u b t_{i}$
11:	end for
12:	$m s u b t_{1} = s s u b t_{1}$
13:	$m s u b t_{N - 1} = s s u b t_{1}$
14:	$m s u b t_{N} = s s u b t_{1}$
15:	return $M T U G$