An Improved Model of Variable Fuzzy Sets with Normal Membership Function for Crane Safety Evaluation

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2017/3190631/figures/3190631.fig.004a.svgz" name="3190631.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Subjective weighting method (AHP)</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2017/3190631/figures/3190631.fig.004b.svgz" name="3190631.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Objective weighting method (entropy method)</td></tr></table>

<div>The comparison of ranking feature values using IVFS, SPA-VFS, and VFS, respectively: (a) subjective weighting method and (b) objective weighting method.</div>

Mathematical Problems in Engineering

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Figure 4

Figure 4: An Improved Model of Variable Fuzzy Sets with Normal Membership Function for Crane Safety Evaluation 