The paper maps the use of the principle of randomness in artistic activity with a focus on visual art and the placement of Czech art into the world context. It examines the hypothesis whether randomness in the hands of the artist becomes an instrument to objectify his or her work and to approach the general principles of the natural world, which, according to the assumption, add novelty and consequently increases its artistic value. The text begins with an etymological interpretation of the concept of randomness, further observes the randomness as phenomenon in various social spheres, and eventually presents the artistic movements and artworks that systematically use randomness. An overview of avant-garde art and abstraction of the first half of the 20th century will allow the author to interpret the principles of randomness used in computer art. The work concludes with a detailed analysis of Zdeněk Sýkora's work, in which, according to the author, the development line of precomputational art is mirrored, along with a breakthrough to digital tools. The conclusion of the work reveals the diversity of the application of the principle of randomness in the art world and finds a common divisor in the objectivizing function, respectively the rising aesthetic value. Through this interpretation, Zdeněk...

Die vorliegende Dissertation analysiert Textgeneratoren aus der Frühzeit der Computergeschichte, seit den 1970er Jahren, ausgehend von ihrem Quelltext. Variablenskripte, Joseph Weizenbaums "Eliza", Kenneth Colbys "Parry", frühe Adventurespiele und Terry Winograds "SHRDLU" werden auf die ihnen zugrundelegienden metaphorischen und algorithmischen Strukturen untersucht. Alle diese Programme lassen sich auf den Glauben der formallogischen Tradition zurückführen, Sprache und das in ihr repräsentierte Wissen von Welt stellten vollständig explizierbare und sogar formalisierbare Sachverhalte dar, wie er in Ludwig Wittgensteins "Tractatus" kulminiert. Technisch werden hier optionale Elemente in Baumstrukturen angeordnet und erzeugen scheinbar unerschöpfliche Varianz. Dem wird eine zweite Traditionslinie gegenübergestellt, die statt an Optionen an Operationen arbeitet und mit dem Dadaisten Tristan Tzara, der Wiederentdeckung des russischen Mathematikers Andrei Markov durch Claude Shannon und den Cutup-Experimenten von William S. Burroughs verbunden ist. Als deren Weiterführung beschreibt die Arbeit das im Rahmen dieser Promotion entwickelte Computerprogramm "Poetry Machine", einen auf semantischen Netzwerken basierenden, interaktiven Textgenerator, der sich selbständig mit Informationen aus dem Internet versorgt. Im Anhang findet sich die Übersetzung des grundlegenden Textes "Ein Beispiel statistischer Forschung am Text ''Eugen Onegin'' zur Verbindung von Proben in Ketten" von A. Markov ins Deutsche. / The present dissertation analyses text generators from the early times of computer history, since the 1970ies, starting from their source code. Variable scripts, Joseph Weizenbaum''s "Eliza", Kenneth Colby''s "Parry", early adventure games and Terry Winograd''s "SHRDLU" are investigated regarding their metaphorical and arithmetical structure. These programs can be traced back to the belief of the formal-logic tradition that language and the knowledge about the world represented by it can be fully explained and even be formalised, like it culminates in Ludwig Wittgenstein''s "Tractatus". Technically, optional elements are arranged in tree-like structures and generate seemingly endless variance. A second line of tradition is opposed to this, that works on operations rather than on options. It is linked to the dadaist Tristan Tzara, the re-discovery of the Russian mathematician Andrei Markov by Claude Shannon and the cutup-experiments of William S. Burroughs. As a continuation, the computer program "Poetry Machine" is described in detail, which was developed within the framework of the present dissertation. This interactive text generator is based on semantic networks and acquires its information autonomously from the internet. The translation of the fundamental text "An Example of Statistical Investigation of the Text ''Eugene Onegin'' Concerning the Connection of Samples in Chains" by A. Markov into German is given in the appendix.

Le projet artistique Poésie de l’ADN prend source dans une démarche interdisciplinaire, en associant la programmation, la biotechnologie, la création sonore et visuelle, l’ésotérisme ainsi que l’art participatif et performatif. Ce mémoire passe en revue les différentes étapes de réflexion et création autour de ce projet, tout d’abord en le replaçant dans son contexte historique et artistique, à la fois au niveau du courant bioart, puis plus précisément dans l’utilisation de l’acide désoxyribonucléique1 (ADN) en arts. Nous verrons comment s’inscrit Poésie de l’ADN aux côtés des oeuvres d’art génétiques visuelles et sonores, ainsi que de portraiture, tout en présentant les influences artistiques et esthétiques qui inspirent mon travail. Ensuite, ce mémoire aborde trois questionnements qui sont au coeur du développement conceptuel de ce projet : 1) les tensions entre l’aléatoire et la subjectivité, c’est-à-dire la constante négociation entre le contrôle de l’artiste et l’autonomie de la machine; 2) l’interprétation des données afin d’établir la signification que l’on reçoit et apporte à la matière; 3) ainsi que les considérations bioéthiques que soulève ce projet. Puis, le mémoire détaille le processus technique et les outils utilisés, ainsi que le processus créatif au sein duquel l’approche ésotérique est fondamentale. Enfin, nous verrons l’impact des critères ADN sur les oeuvres, ainsi que les portraits qui en découlent. Poésie de l’ADN est un projet artistique qui réunit à la fois le développement d’une application dont l’algorithme et les paramétrages permettent de générer des matières audio-visuelles à partir de données ADN, ainsi que la composition de portraits, à travers l’interprétation artistique, ésotérique et humaine de cette matière, pour créer des vidéomusiques individuelles. / DNA Poetry is an artistic project rooted in an interdisciplinary approach, combining programming, biotechnology, sound and visual creation, esotericism as well as participatory and performative art. This thesis reviews the different stages of reflection and creation around this project, first of all by placing it in its historical and artistic context, first off within the bioart artistic movement, then more precisely within the use of deoxyribonucleic acid (DNA) in the arts. We'll see how DNA Poetry fits alongside visual and audio genetic artworks, as well as portraiture, while showcasing the artistic and aesthetic influences that inspire my work. Then, this thesis addresses three questions which are at the heart of the conceptual development of this project: 1) the tensions between algorithm and subjectivity, that is to say the constant negotiation between the artist's control and autonomy of the machine; 2) data interpretation, in order to establish meaning in what is received and brought to the material; 3) and finally the bioethical considerations raised by this project. Then, the thesis details the technical process and the tools used, as well as the creative process in which the esoteric approach is fundamental. Finally, we will see the impact of DNA data on the audio and visual outcome, as well as the portraits that result from them. DNA Poetry is an artistic project that brings together both the development of an application whose algorithm and mappings make it possible to generate audiovisual material from DNA data, as well as the composition of portraits, through the human, esoteric and artistic interpretation of this material, in order to create individual videomusic art pieces.