Research Article

Comparison of Different Independent Component Analysis Algorithms for Output-Only Modal Analysis

Table 1

Comparison of five objective functions.

Evaluation factorMaximization kurtosisMaximization negentropyMinimization of mutual informationMaximum likelihood estimationInfomax

Estimate the component at onceOneOneAllAllAll
Estimated components must be irrelevantYesYesNoYesYes
Prior knowledgeNoNoNoYesNo
Robustness to outliersLowHighMiddleMiddleMiddle