Szellemi értékeink védelme és felhasználása: korszerű plágiumkeresés.

This paper traces the emergence and development of intellectual property from ancient times to the digital age of the 21st century. Manual replication has played an important role in the preservation of human knowledge and scientific achievements. Scriptors created legal copies of original works. Later, when Gutenberg invented the printing press, the concept of intellectual property started to take shape. The digital creation of original works made their reproduction, reuse and citation easier than ever before. Digital rights management (DRM) solutions aim at protecting new media, but their application can cause many difficulties in practice. Plagiarism can be defined simply as „using external sources without proper citation“. The availability of computer processing has made cheating both easier and harder to find. This paper reviews the recently used text matching and plagiarism search algorithms. The SZTAKI-KOPI plagiarism search engine, being developed in Hungary within a research programme, offers the opportunity to innovatively integrate results from sister projects like the SZTAKI-Szótár online dictionary and other smaller, linguistic pilot systems. Turnitin.com - which is also shortly presented - is one of the largest international plagiarism checkers with a huge comparison database providing statistics on originality and online grading. The study provides an overall insight into the technologies designed to protect digital materials meant for public disclosure. [ABSTRACT FROM AUTHOR]