“…Others use the signal extraction method to evaluate the performance of individual indicators, both in the form of noise to signal ratio, usefulness ratio, and by maximizing Youden's J-Statistic (Babecky et al, 2014;Fuertes and Kalotychou, 2007). The Bayesian Model Averaging (BMA) (Kamra, 2013), Principal Component Analysis (PCA) (Kamra, 2013), Event Analysis (Balteanu and Erce, 2014), K-means clustering (Fuertes and Kalotychou, 2007), machine learning algorithm such as Artificial Neural Networks (ANNs) (Anwar and Ali, 2018), market pressure approach (Boonman et al, 2015), binary recursive tree analysis (Schimmelpfennig, et.al, 2003), and extreme learning machine technology (Ping et al, 2019) are also used in the literature. (Dawood, et.al, 2017;Jedidi, 2013); and (viii) a sudden stop of the capital outflow which arised from the political issues (Basu, 1993;Warjiyo, 2016).…”