Similarities between different services.

<p>Similarities between different services.</p

Online cloud storage services.

<p>Online cloud storage services.</p

Significances arising from the value distribution.

<p>Significances arising from the value distribution.</p

Trustworthy attributes of cloud service.

<p>Trustworthy attributes of cloud service.</p

Significances arising from the experience usability.

<p>Significances arising from the experience usability.</p

Customer satisfaction function <i>C_m,n</i>.

<p>(a) and (b) depict the distributions of customer satisfaction as recorded at the fixed expectation <i>H</i>^exp = 0.7 and <i>H</i>^exp = 0.9, where the parameter <i>δ</i> is varied from 2 to 6 in increment of 2. It can be observed that the rate of change in customer satisfaction differs significantly when <i>H_m,n</i> falls below and exceeds the expectation.</p

The number of recommended services for <i>u</i>₃₃₉.

<p>Results are presented for the proposed cloud service selection approach, where the parameter is varied from 0 to 1 in increment of 0.1.</p

QoS value distributions.

<p>(a) and (b) depict the value distributions of <i>response-time</i> and <i>throughput</i> in our customer-service matrices, where “−1” indicates that the service invocation failed due to an http error. The ranges of <i>response-time</i> and <i>throughput</i> are 0–16.053 seconds and 0–541.546 kbps, respectively.</p