Publications

Selected research publications, reports, and working papers.

  • Combining Minds to Decode Technological Recombination and Relatedness

    Christian Chacua, Ricardo Hausmann, Shreyas Gadgin Matha, Matte Hartog, Muhammed A. Yildirim, Federico Moscatelli, and Julio Raffo

    In preparation, 2026

    Studies how technologies combine at individual and collective scales across inventors, firms, cities, and countries.

  • Decoding the Evolution of Work: A Longitudinal Dataset on Occupational Characteristics (1939-2019)

    Shreyas Gadgin Matha et al.

    In preparation, 2026

    Data paper on US occupational characteristics from 1939-2019 using DOT/O*NET and harmonized occupational classifications.

  • Cross-Domain Capabilities: Mapping the Links Between Science, Technology, and Production

    Christian Chacua, Ricardo Hausmann, Shreyas Gadgin Matha, Matte Hartog, Muhammed A. Yildirim, Federico Moscatelli, and Julio Raffo

    In preparation, 2026

    Maps linkages between science, technology, and production capabilities and tests whether cross-related capabilities predict later technological development.

  • Innovation Capabilities Outlook 2026: Technical Notes

    Christian Chacua, Shreyas Gadgin Matha, Matte Hartog, Ricardo Hausmann, Federico Moscatelli, Julio Raffo, and Muhammed A. Yildirim

    World Intellectual Property Organization technical report, 2026

    Documents data sources, clustering, relatedness, complexity, density, and diversification-potential methods for the WIPO Innovation Capabilities Outlook.

  • Burning Bridges or Bridging Divides: Geopolitics and Collaboration in Research and Innovation

    Shreyas Gadgin Matha, Matte Hartog, Christian Chacua, Pierre-Alexandre Balland, Ricardo Hausmann, and Muhammed A. Yildirim

    Research Policy, 2025

    Estimates how geopolitical distance shapes international scientific and inventive collaboration.

  • Japan's Innovation Challenge: Escaping the Middle-Technology Trap

    Shreyas Gadgin Matha et al.

    Japan Productivity Commission policy report, 2025

    Diagnoses Japan’s innovation and productivity challenge through technology maturity, R&D allocation, patents, and sectoral composition.

  • Global Trends in Innovation Patterns: A Complexity Approach

    Christian Chacua, Matte Hartog, Muhammed A. Yildirim, Ricardo Hausmann, and Shreyas Gadgin Matha

    WIPO Economic Research Working Paper 80 / Growth Lab Working Paper 235, 2024

    Uses publications, patents, and trade to measure innovation complexity and path-dependent diversification opportunities.

  • Innovation Policies Under Economic Complexity

    Christian Chacua, Matte Hartog, Muhammed A. Yildirim, Ricardo Hausmann, and Shreyas Gadgin Matha

    Growth Lab Working Paper 234 / WIPO Economic Research Working Paper 79, 2024

    Argues innovation policy should be place-based, multidimensional, and grounded in existing capabilities and binding constraints.

  • Can We Map Innovation Capabilities?

    Federico Moscatelli, Christian Chacua, Shreyas Gadgin Matha, Matte Hartog, Eduardo Hernandez Rodriguez, Julio D. Raffo, and Muhammed A. Yildirim

    WIPO Economic Research Working Paper 81, 2024

    Proposes complexity-based indicators of innovation capabilities across science, technology, and production.

  • Lessons from Production Networks in Albania

    Shreyas Gadgin Matha

    Growth Lab report, 2021

    Uses anonymized Albanian tax data covering formal firms to study buyer-supplier networks, COVID-19 shocks, and regional trade.

  • Decoding the Evolution of Work: A Longitudinal Dataset on Occupational Characteristics (1939-2019)

    Shreyas Gadgin Matha et al.

    In preparation, 2026

    Data paper on US occupational characteristics from 1939-2019 using DOT/O*NET and harmonized occupational classifications.

  • Cross-Domain Capabilities: Mapping the Links Between Science, Technology, and Production

    Christian Chacua, Ricardo Hausmann, Shreyas Gadgin Matha, Matte Hartog, Muhammed A. Yildirim, Federico Moscatelli, and Julio Raffo

    In preparation, 2026

    Maps linkages between science, technology, and production capabilities and tests whether cross-related capabilities predict later technological development.

  • Burning Bridges or Bridging Divides: Geopolitics and Collaboration in Research and Innovation

    Shreyas Gadgin Matha, Matte Hartog, Christian Chacua, Pierre-Alexandre Balland, Ricardo Hausmann, and Muhammed A. Yildirim

    Research Policy, 2025

    Estimates how geopolitical distance shapes international scientific and inventive collaboration.

  • Global Trends in Innovation Patterns: A Complexity Approach

    Christian Chacua, Matte Hartog, Muhammed A. Yildirim, Ricardo Hausmann, and Shreyas Gadgin Matha

    WIPO Economic Research Working Paper 80 / Growth Lab Working Paper 235, 2024

    Uses publications, patents, and trade to measure innovation complexity and path-dependent diversification opportunities.

  • Combining Minds to Decode Technological Recombination and Relatedness

    Christian Chacua, Ricardo Hausmann, Shreyas Gadgin Matha, Matte Hartog, Muhammed A. Yildirim, Federico Moscatelli, and Julio Raffo

    In preparation, 2026

    Studies how technologies combine at individual and collective scales across inventors, firms, cities, and countries.

  • Innovation Capabilities Outlook 2026: Technical Notes

    Christian Chacua, Shreyas Gadgin Matha, Matte Hartog, Ricardo Hausmann, Federico Moscatelli, Julio Raffo, and Muhammed A. Yildirim

    World Intellectual Property Organization technical report, 2026

    Documents data sources, clustering, relatedness, complexity, density, and diversification-potential methods for the WIPO Innovation Capabilities Outlook.

  • Japan's Innovation Challenge: Escaping the Middle-Technology Trap

    Shreyas Gadgin Matha et al.

    Japan Productivity Commission policy report, 2025

    Diagnoses Japan’s innovation and productivity challenge through technology maturity, R&D allocation, patents, and sectoral composition.

  • Innovation Policies Under Economic Complexity

    Christian Chacua, Matte Hartog, Muhammed A. Yildirim, Ricardo Hausmann, and Shreyas Gadgin Matha

    Growth Lab Working Paper 234 / WIPO Economic Research Working Paper 79, 2024

    Argues innovation policy should be place-based, multidimensional, and grounded in existing capabilities and binding constraints.

  • Can We Map Innovation Capabilities?

    Federico Moscatelli, Christian Chacua, Shreyas Gadgin Matha, Matte Hartog, Eduardo Hernandez Rodriguez, Julio D. Raffo, and Muhammed A. Yildirim

    WIPO Economic Research Working Paper 81, 2024

    Proposes complexity-based indicators of innovation capabilities across science, technology, and production.

  • Lessons from Production Networks in Albania

    Shreyas Gadgin Matha

    Growth Lab report, 2021

    Uses anonymized Albanian tax data covering formal firms to study buyer-supplier networks, COVID-19 shocks, and regional trade.