Journal of Internet Services and Applications

Table 1 Energy consumption aggregation on subgraphs patterns

From: Service selection in web service compositions optimizing energy consumption and service response time

Sequence	AND split	AND Join
E(G₁) + E(G₂)	E(G₁) + ⋯ + E(G_n)	$E (G_{1}^{}) + \dots + E (G_{n}^{})$
XOR Split	XOR Join	LOOP
$\sum_{i = 1}^{n} p_{i} . E (G_{i})$	$\sum_{i = 1}^{n} p_{i} . E (G_{i}^{*})$	$\sum_{i = 1}^{n_{l}} p_{li} . \sum E (G_{i}^{*})$
OR Split/Join	p_{or 1}.E(G₁) + p_{or 2}.E(G₂) + p_or\|\|.(E(G₁) + E(G₂))

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