## Nomenclature
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Author** & **Method** & **Research Objective** & **Research Gap and Problem** & **Solution and Modelling** & **Result and Finding** \\ \hline [PERSON] et al. [72] & SSI-COV & Adopted a hierarchical clustering algorithm to & Need to estimate the tension forces of & The ambient response of the & A good agreement between the & estimated results and measured \\  & & obtain tensions in the stay-cable & cables in cable-stayed bridges & Veterans’s Clas City Skyway Bridge & tension forces was observed. \\ \hline [PERSON] et al. [187] & SSI-COV & Valuated a method for estimating the & Need to estimate the variance of modal & A damaged prestressed concrete & Good agreement is reported & between the predicted uncertainty \\  & & using SSI & parameters & bridge and a mid-free building & and the observation data. \\ \hline [PERSON] et al. [188] & SSI-COV & Developed a new SSI methodology to identify & Need to extract numerous modes in & The ambient response of the three & The feasibility of this new approach \\  & & modal parameters of stay cables & style cable & stay cables of Ch-Lu Bridge & is verified successfully. \\ \hline [PERSON] et al. [168] & SSI-COV & Used the residual of the SSI and global \(\chi 2\)-tests & Need to explicit possible damages in & A full-cable bridge benchmark & The damage in tower was detected \\  & & built on that residual for damage detection. & structure using output data & validated by numerical simulation & In the same time \\ \hline [PERSON] and [PERSON] [189] & SSI-COV & Proposed an algorithm in two steps by integrating structural health monitoring with & Need to damage detection of large & A numerical model of a shear & The algorithm could identify the & damage occurred with saving \\  & & semi-active control strategy & output data & & time and costdoe. \\ \hline [PERSON] et al. [160] & SSI-COV & Investigated performance of the combined SSI algorithms and a stabilization diagram for & Need to identify structural changes in & A numerical models of a triped & Effectiveness of the proposed methodology was verified using \\  & & _respiratory systems_ & Tensegery systems & & dome \\ \hline [PERSON] et al. [71] & SSI-COV & Defined a nonlinear subspace distance to detect & Need to consider nonlinearity of the & A VSS subjected to accelerated & The designed index is very effective \\  & & the deviation from the normal state, and reflects & structures for identification of modal & ageing & to evaluate the health state. \\ \hline [PERSON] et al. [190] & SSI-COV & Employed EDA, outlier analysis and cross & Need to distinguish between abnormal & Need to distinguish between abnormal & The method was very effective to \\  & & correlation to elucidate and objects and & data malfunction, and anomalies of & A cable stayed bridge over Sutoong & provide accurate real life results in \\  & & anomalies in the data. & the sensors & Tensegery river & the continuous PSM of bridges. \\ \hline [PERSON] et al. [191] & SSI-COV & Proposed a near-real-time hybrid framework for & Need to simultaneously deal with & Extensive numerical simulations as & The efficacy of the framework is \\  & & system identification of structures to deal with & stationary and transient responses & well as analysis of the Internet & demonstrated. \\  & & stationary and transient responses & the applied excitation loads & enabled data of Rural Nadia & The \\ \hline [PERSON] et al. [192] & SSI-COV & Applied a null-space Hankel matrix of & Need to study the dynamic response of & Numerical and experimental of a & The first natural frequencies were \\  & & correlation estimates & structures on composite structures & one span composite bridge deck, & determined with an uncertainty \\  & & & formed by wood and concrete & below 1.5\%. \\ \hline [PERSON] et al. [164] & SSI-COV & Presented an efficient and fast SSI damage & Need to investigate the change in & The new approach can detect better & and separate different levels of \\  & & detection that is robust to damages in the & unmeasured ambient excitation & & Damage. \\ \hline [PERSON] et al. [164] & SSI-COV & Valuated the effect of noise on the uncertainty of & Need to study the resulting uncertainty & A numerical test of a supported & The uncertainty on modal damping \\  & & obtained modal parameters using SSI & for modal analysis using the stochastic & beam, and the experimental model & and eigenfrequencies may exhibit a \\  & & & SSI method. & of a damped-free plate & non-normal distribution. \\ \hline [PERSON] et al. [193] & SSI-COV & SSI-COV together with their confidence interval estimation and a null space-based VDD & Need to consider the intrinsic uncertainty for a robust and automated & A large scale progressive damage & The proposed method is able to \\  & & estimation and a null space-based VDD & SHM & test of the S101 Bridge in Austria. & Clearly indicate the presence of \\ \hline \hline \end{tabular}
\end{table}