41 citations · 57 across the 6 of their papers we have counts for
3 papers · 1 filter
Novel and topical business news and their impact on stock market activities
Takayuki Mizuno, Takaaki Ohnishi, Tsutomu Watanabe
We propose an indicator to measure the degree to which a particular news article is novel, as well as an indicator to measure the degree to which a particular news item attracts at…
The gradual evolution of buyer--seller networks and their role in aggregate fluctuations
Ryohei Hisano, Tsutomu Watanabe, Takayuki Mizuno +2
Buyer--seller relationships among firms can be regarded as a longitudinal network in which the connectivity pattern evolves as each firm receives productivity shocks. Based on a da…
Structure of global buyer-supplier networks and its implications for conflict minerals regulations
Takayuki Mizuno, Takaaki Ohnishi, Tsutomu Watanabe
We investigate the structure of global inter-firm linkages using a dataset that contains information on business partners for about 400,000 firms worldwide, including all the firms…