Correction: Quantitative Determination of Technological Improvement from Patent Data

Abstract

Fig 1 appears incorrectly in the published article. Please see the correct Fig 1 and its legend here. Fig 1 Technological Improvement Rates vs Simple Patent Count (A), ratio of patents with greater than 20 citations (B), and average number of forward citations within 3 years of publication (C); the Pearson correlation coefficient (cp), the null hypothesis acceptance ... There is an error in the second sentence of the third paragraph in the Results section. The correct sentence is: There seems to be a slight visual trend in the figure, the Pearson correlation is a moderate 0.38 and the p-value is slightly lower than is generally accepted for statistical significance, at 0.043. Table 4 appears incorrectly in the published article. Please see the correct Table 4 and its legend here. Table 4 Least Squares Linear Regression Models for Predicting Technological Improvement Rates with R2 shown for each model and the coefficients shown for each metric included in the model and its p value.