What predicts the popularity of TED talks?

Abstract
In this study, we employ the network analysis, principal component analysis (PCA), and least absolute shrinkage and selection operator (LASSO) method to build a predicting model for the popularity of TED talks. We find that Number of Languages impacts the popularity at least 3 times higher than other factors; and publishing the TED Talk during the weekend, especially on Saturday, the ideas could be better spread.