Prediction of emerging technologies based on analysis of the US patent citation network

Péter Érdi, Kinga Makovi, Zoltán Somogyvári, Katherine Strandburg, Jan Tobochnik, Péter Volf, László Zalányi

Research output: Contribution to journalArticlepeer-review


The network of patents connected by citations is an evolving graph, which provides a representation of the innovation process. A patent citing another implies that the cited patent reflects a piece of previously existing knowledge that the citing patent builds upon. A methodology presented here (1) identifies actual clusters of patents: i. e., technological branches, and (2) gives predictions about the temporal changes of the structure of the clusters. A predictor, called the citation vector, is defined for characterizing technological development to show how a patent cited by other patents belongs to various industrial fields. The clustering technique adopted is able to detect the new emerging recombinations, and predicts emerging new technology clusters. The predictive ability of our new method is illustrated on the example of USPTO subcategory 11, Agriculture, Food, Textiles. A cluster of patents is determined based on citation data up to 1991, which shows significant overlap of the class 442 formed at the beginning of 1997. These new tools of predictive analytics could support policy decision making processes in science and technology, and help formulate recommendations for action.

Original languageEnglish (US)
Pages (from-to)225-242
Number of pages18
Issue number1
StatePublished - Apr 2013


  • Co-citation clustering
  • Network
  • Patent citation
  • Technological evolution

ASJC Scopus subject areas

  • General Social Sciences
  • Computer Science Applications
  • Library and Information Sciences


Dive into the research topics of 'Prediction of emerging technologies based on analysis of the US patent citation network'. Together they form a unique fingerprint.

Cite this