Related Experiment Video
Updated: Nov 24, 2025

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
Published on: October 24, 2019
Imputation of missing information in worldwide patent data.
Gaétan de Rassenfosse1, Florian Seliger2
1Chair of Innovation and Intellectual Property Policy, College Management of Technology, Ecole polytechnique fédérale de Lausanne Switzerland.
We developed a method to fill in missing patent data in the Worldwide Patent Statistical Database (PATSTAT). This improves the accuracy of global technology activity analysis using patent information.
Area of Science:
- Bibliometrics
- Data Science
- Intellectual Property
Background:
- The Worldwide Patent Statistical Database (PATSTAT) is crucial for academic patent research.
- Incomplete data in PATSTAT hinders accurate analysis of technological activities.
- Missing country codes and technology classifications are significant data gaps.
Purpose of the Study:
- To present a general method for imputing missing information in the PATSTAT database.
- To release publicly available datasets and algorithms for data imputation.
- To enhance the completeness and accuracy of patent data for research.
Main Methods:
- Developed a SQL algorithm leveraging institutional knowledge of the international patent system.
- Applied the algorithm to impute missing country codes.
- Applied the algorithm to impute missing technology classifications.
Main Results:
- Created and released two datasets with imputed country codes and technology classifications.
- The imputation method is generalizable to other missing information in PATSTAT.
- Publicly available imputed datasets and the imputation algorithm.
Conclusions:
- The developed imputation method significantly improves the completeness of PATSTAT.
- The publicly released datasets and algorithm facilitate more accurate patent data analysis.
- This work supports robust research on global technological trends.
More Related Videos
09:23Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans
Published on: August 16, 2017
07:50A Metadata Extraction Approach for Clinical Case Reports to Enable Advanced Understanding of Biomedical Concepts
Published on: September 20, 2018
Related Concept Videos
Propagation of Uncertainty from Systematic Error
Genomic Imprinting and Inheritance
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Single Nucleotide Polymorphisms-SNPs
Mechanistic Models: Compartment Models in Individual and Population Analysis
Incomplete Dominance
Propagation of Uncertainty from Random Error