linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 … predictive power on future innovation after 1995. This pattern is consistent with the idea that when there is more past upstream …

results in a selection bias that affects econometric estimates of innovation production functions. We propose a methodology to … evaluate whether estimates that rely on the single-office count are affected by a selection bias. -- Innovation production …