Essays in empirical industrial economics

The first part provides a literature review on the network TV industry research. I describe the data set, which is employed in the coming analysis. I introduce the media environment and the special commercial buying system in Taiwan. In the second part, I analyze how TV company's entry decision impacts the social welfare. I measure how much the viewers' total welfare changes and how much the network TV's profit changes in NT dollar when a new TV network company enters the market.;The last two chapters examine learning and spillover effects in the semiconductor industry and intends to investigate how ignoring firms' innovation adoption could lead to biased estimations of the learning and spillover effects. The estimation is based on a dynamic game framework that endogenizes all the strategic decisions of firms, including the timing of the innovation. The estimation strategy proposed in this paper makes it possible to recover the entire cost structure of the industry, including the distribution of the innovation sunk cost. The estimates of the dynamic game suggest that learning and spillover effects provide firms with significative cost-saving incentives. Specifically, the findings demonstrate that assuming firms' innovation as exogenous leads to biased results, that underestimate the learning effect but overestimate the spillover effect.