Vanessa Volz

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The patterns of quinolizidine alkaloids in cell cultures of 10 species of Fabaceae were analyzed by high-resolution GLC and GLC-MS and compared with the alkaloids present in the leaves of the respective plants. Lupanine was produced in all 10 cell suspension cultures as the main alkaloid. It was accompanied by sparteine, tetrahydrorhombifoline,(More)
We found no significant differences in mean growth measurements or mean plasma amino acid concentrations in 14 healthy full-term infants fed a whey-predominant cow milk formula and 15 healthy full-term infants who were breast-fed. Plasma taurine concentrations did not differ despite a tenfold higher level of taurine in human milk versus that in the formula.(More)
In the General Video Game Playing competitions of the last years, Monte-Carlo tree search as well as Evolutionary Algorithm based controllers have been successful. However, both approaches have certain weaknesses, suggesting that certain hybrids could outperform both. We envision and experimentally compare several types of hybrids of two basic approaches,(More)
Game balancing is an important part of the (computer) game design process, in which designers adapt a game prototype so that the resulting gameplay is as entertaining as possible. In industry, the evaluation of a game is often based on costly playtests with human players. It suggests itself to automate this process using artificial players for the(More)
This paper presents a measure intended to quantify the relative strategic depth of games as experienced by human players. The measure is based on the complexity (number and specificity of rules) of a hierarchical knowledge base that is extracted from playtraces. As a proof-of-concept, we compute the proposed measure for three arcade-style games and compare(More)
Game balancing is a recurring problem that currently requires a lot of manual work, usually following a game designer's intuition or rules-of-thumb. To what extent can or should the balancing process be automated? We establish a process model that integrates both manual and automated balancing approaches. Artificial agents are employed to automatically(More)
In this paper, we propose a novel approach (SAPEO) to support the survival selection process in multi-objective evolutionary algorithms with surrogate models it dynamically chooses individuals to evaluate exactly based on the model uncertainty and the distinctness of the population. We introduce variants that differ in terms of the risk they allow when(More)
Artificial intelligences (AIs) that interact with their environment are difficult to compare and evaluate as their formal properties easily become incomparable due to fundamentally different knowledge representations, reaction schemes, approaches and the general, very dendritic field of AI research. Nonetheless, AI approaches are regularly proposed as(More)
ACM-W provides support for women undergraduate and graduate students in Computer Science and related programs to attend research conferences. This exposure to the CS research world can encourage a student to continue on to the next level (Undergraduate to Graduate, Masters to Ph.D, Ph.D. to an industry or academic position). The student does not have to(More)