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Measuring technological distance for patent mapping

Bowen Yan, Jianxi Luo
2016 Journal of the Association for Information Science and Technology  
Constructing such a patent network requires a proper measure of the distance between different classes of patents in the patent classification systems.  ...  Using United States patent data from 1976 to 2006 and International Patent Classification system, we compare 12 representative distance measures, which quantify inter-field knowledge base proximity, field-crossing  ...  Relatedness measures A qualified measure of "relatedness" between a pair of technology fields should capture the degree to which the technical knowledge required to invent technologies in one field is  ... 
doi:10.1002/asi.23664 fatcat:qfeismaqhnb4bgfj7vst53epji

Technology Portfolio and Market Value

Jens Schmidt-Ehmcke, Petra Zloczysti
2008 Social Science Research Network  
This discount can be counterbalanced when the relevant fields share a common technological base which is measured by the degree of technological relatedness.  ...  in technological fields.  ...  Accordingly, large and positive values of ij t show a high degree of relatedness between the technological fields i and j.  ... 
doi:10.2139/ssrn.1129765 fatcat:csihcgveurdktokih6mafi5mne

Relatedness and coherence in technological and product diversification of the world's largest firms

Lucia Piscitello
2000 Structural Change and Economic Dynamics  
The present paper investigates relatedness and coherence with reference to both product and technological diversification.  ...  In particular, it is argued that: (i) relatedness can be disentangled into three dimensions: industry-, technology-and firm-specific; and that (ii) coherence refers to both product and technological diversification  ...  The measure of the technological competence-based relatedness between fields i and j, is: COMPET ij =(Y ij −k ij )/| ij The values of COMPET ij range from a minimum of − 2.53 (between field 40, i.e. motor  ... 
doi:10.1016/s0954-349x(00)00019-9 fatcat:mbxmmxbkf5gabbff2xisojekd4

Knowledge Space, Relatedness and Complexity: A Regional Analysis in Turkey

Sedef AKGÜNGÖR, Mert ABAY
2021 Yildiz social science review  
Although there are studies focusing on regional clustering of economic activity in Turkey, little is known related to regions' potential to attract new technologies based on their core strenghts.  ...  Relatedness between technology i and j (φ ij ) is a standardized measure of the frequency with which two IPC classes appear on the same patent.  ...  METHODS Data To identify technological fields and compute measures of relatedness and knowledge complexity, we use OECD-REGPAT database January 2020 Edition (OECD, 2020).  ... 
doi:10.51803/yssr.869824 fatcat:k3zhqaocmzdfvcy3jawpgjzofi

Impact of M&A on the R&D Process. An Empirical Analysis of the Role of Technological and Market Relatedness

Bruno Cassiman, Massimo G. Colombo, Paola Garrone, Reinhilde Veugelers
2003 Social Science Research Network  
Using information on 31 in-depth cases of individual M&A deals we show that technological and market relatedness between M&A partners distinctly affect the inputs, outputs, performance and organizational  ...  This suggests that M&A between rival firms reap little technology gains from mergers.  ...  Within the technology relatedness between acquirer and target we make a distinction between firms active in the same technology fields (STF) versus firms active in complementary technology fields (CTF)  ... 
doi:10.2139/ssrn.462626 fatcat:yu4knjufnneqviz2vxupjbown4

The impact of M&A on the R&D process

Bruno Cassiman, Massimo G. Colombo, Paola Garrone, Reinhilde Veugelers
2005 Research Policy  
Using information on 31 in-depth cases of individual M&A deals, we show that technological and market-relatedness between M&A partners distinctly affects the inputs, outputs, performance and organisational  ...  M&A between partners with ex-ante complementary technologies result in more active R&D performers after the M&A.  ...  Acknowledgements The paper is based on the results from the project "Mergers and Acquisitions and Science and Technology Policy", financed by the European Commission, DG Research (Contract No.  ... 
doi:10.1016/j.respol.2005.01.002 fatcat:lrlupfjg6zfvhabauzadw3r53q

Return to basics: Clustering of scientific literature using structural information [article]

Jinhyuk Yun, Sejung Ahn, June Young Lee
2020 arXiv   pre-print
Scholars frequently employ relatedness measures to estimate the similarity between two different items (e.g., documents, authors, and institutes).  ...  research fields.  ...  Acknowledgments This work received institutional support from the Korea Institute of Science and Technology Information.  ... 
arXiv:2004.05904v1 fatcat:rffx4dxbhrhfrnimrqpwjwzfnm

Coherent diversification in corporate technological portfolios [article]

Emanuele Pugliese, Lorenzo Napolitano, Andrea Zaccaria, Luciano Pietronero
2017 arXiv   pre-print
From this database it is possible to define a measure of the firms' coherent diversification, based on the network of technological fields, and relate it to the firms' perfomance in terms of labor productivity  ...  We study the relationship between firms' performance and their technological portfolios using tools borrowed from the complexity science.  ...  between specific technological fields.  ... 
arXiv:1707.02188v1 fatcat:536fllxxbvh6xk3kqubj65rz54

Smart Specialization Policy in the EU: Relatedness, Knowledge Complexity and Regional Diversification

Pierre Alexandre Balland, Ron A. Boschma, Joan Crespo, David L. Rigby
2017 Social Science Research Network  
from estimates of the complexity of technologies.  ...  To tackle the weak underpinning of smart specialization policy, we propose a policy framework around the concepts of relatedness and knowledge complexity.  ...  We also would like to thank the European Commission for its financial support through the project "Technological diversification of Europe's regions".  ... 
doi:10.2139/ssrn.2995986 fatcat:zlhjdxta55gbxh3j7nhcglwlhq

Smart specialization policy in the European Union: relatedness, knowledge complexity and regional diversification

Pierre-Alexandre Balland, Ron Boschma, Joan Crespo, David L. Rigby
2018 Regional studies  
We propose a policy framework around the concepts of relatedness and knowledge complexity.  ...  We show that diversifying into more complex technologies is attractive but difficult for European Union regions to accomplish.  ...  Measuring relatedness between technologies To measure technological relatedness between patent classes, we use the distribution of knowledge claims by IPC class on each patent across the EU as a whole,  ... 
doi:10.1080/00343404.2018.1437900 fatcat:qsv3mgr6hfadve5v2kr6ihc55q

A Unidirectional Measure of Industry Relatedness and its Application to Acquisitions Framework. (September 2018)

Elena Cefis, Damiana Rigamonti
2018 Zenodo  
This paper proposes an index to measure the industry relatedness between an origin firm and a target firm.  ...  Our analysis shows that regardless of the considerable average level of relatedness inside each macro-sector, industries characterized by a high level of technology/knowledge intensity show a wider acquisition  ...  In the framework of knowledge-relatedness studies, Scherer (1982) observed the inter-industries R&D and technology flows to determine a measure of technology relatedness.  ... 
doi:10.5281/zenodo.3484505 fatcat:iwdbglm7vzfllgkxbn32oqvtoa

R&D Policy and Technological Trajectories of Regions: Evidence from the EU Framework Programmes

Wolf-Hendrik Uhlbach, Pierre-Alexandre Balland, Thomas Scherngell
2019 Zenodo  
After establishing a convergence between FP projects and technology fields of patents, we explore the relationship between diversification and public funded projects by means of a fixed-effects linear  ...  Results indicate statistically positive effects of participation in FP projects and a decrease in the deferring importance of relatedness with increasing number of participations.  ...  To further get the degree of relatedness between each pair of technologies, this matrix normalized, using the association measure, by Eck and Waltman (2009) in the version of Steijn (forthcoming).  ... 
doi:10.5281/zenodo.2559443 fatcat:apd44bxqvzguxia7bzthidddqi

Assessing Strategy Relatedness in Highly Diversified Firms

Jeffrey Harrison, Ernest Hall, Lee Caldwell
1970 Journal of business strategies  
In addition, researchers in related fields of study, such as industrial organization in economics, have been unable to establish a consistent relationship between diversification and performance ([2],  ...  Since its inception, the field of strategic management has been largely dominated by diversification studies.  ...  Related Diversification Measures Three continuous measures of relatedness were used simultaneously: vertical integration, technological relatedness, and marketing relatedness.  ... 
doi:10.54155/jbs.7.1.34-46 fatcat:5l5rndya5ndo3po5gfqsd3qfgy

Explaining the dynamics of relatedness: the role of co‐location and complexity

Sándor Juhász, Tom Broekel, Ron Boschma
2020 Papers in Regional Science  
Using patent data, we test the extent to which relatedness between technologies developed along co-location and differences in technological complexity in 1980-2010.  ...  This study argues that relatedness is inherently dynamic and endogenous to technological and economic developments.  ...  Hypothesis 1B : Co-location enhances the intensification of relatedness between technologies.  ... 
doi:10.1111/pirs.12567 fatcat:s6pjdi7bpbee5guc2xti7brvvq

Relatedness, external linkages and regional innovation in Europe

Ernest Miguelez, Rosina Moreno
2017 Regional studies  
This measure assumes that knowledge in technologies that do not share the same broad field (5-field) are unrelated to each other.  ...  the computation of the indexes measuring the degree of relatedness between the local knowledge base and the inflows of external knowledge.  ... 
doi:10.1080/00343404.2017.1360478 fatcat:in3goirgsng7df3ih2jt35rjti
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