PATExpert: Automatische Vereinfachung von Patentansprüchen


Der Forschungsgruppe von Prof. Leo Wanner von der Universität Pompeu Fabra aus Barcelona ist es gelungen, ein maschinelles Verfahren zur sprachlichen Vereinfachung von in Englisch verfassten Patentansprüchen zu entwickeln.

Die üblicherweise aus nur einem Satz bestehenden Ansprüche werden dabei in einem vollautomatischen Prozess zunächst in ihre einzelnen Aussagen zerlegt und in mehreren Schritten schließlich zu leicht verständlichen Texten aus kurzen Sätzen umformuliert.

Bei einer ersten Anwendung auf Patente der IPC-Klasse G11B7 lieferte das Paraphrasierungverfahren bereits Transformationen von beeindruckender Qualität, wie beispielhaft die folgende Umformung des ersten Anspruchs des Patentdokumentes EP0548937A1 zeigt:







Original Transformation
An optical disk drive comprising:
a laser light source for emitting a laser beam;
an optical system for conversing the laser beam from the laser light source on a signal plane of optical disk on which signal marks are formed and for transmitting the light reflected from the signal plane;
one or more optical components, arranged in the optical path between the laser light source and the optical disk, for making the distribution of the laser beam converged by the conversing means located on a ring belt just after the passage of an aperture plane of the optical system;
a detection means for detecting the light reflected from the optical disk; and
a signal processing circuit for generating a secondary differential signal by differentiating the signals detected by the detection means and for detecting the edge positions of the signal marks by comparing the secondary differential signal with a detection level.
An optical disk drive which comprises a laser light source, a signal processing circuit, an optical system, and a detection means.
This is so that, the laser light source emits a laser beam. An optical system converses the laser beam from the laser light source on a signal plane of optical disk. On the signal plane of optical disk the signal marks are formed. The optical system transmits the light reflected from the signal plane. The optical disk drive also comprises one or more optical components. The one or more optical components are arranged in the optical path between the laser light source and the optical disk, for making the distribution of the laser beam converged by the conversing means. The conversing means is located on a ring belt just after the passage of an aperture plane of the optical system. This is so that, the detection means detects the light reflected from the optical disk. This is so that, the signal processing circuit generates a secondary differential signal. For this, it differentiates the signals detected by the detection means. It also detects the edge positions of the signal marks. In order to do so, it compares the secondary differential signal with a detection level.