17 papers · ranked by Valyu relevance
Alexey S Kondrashov, Inna S Povolotskaya, Dmitry N Ivankov, Fyodor A Kondrashov
'Fyodor A Kondrashov'] Background Divergence of two independently evolving sequences that originated from a common ancestor can be described by two parameters, the asymptotic level of divergence E and the rate r at which this level of divergence is approached. Constant negative selection impedes allele replacements…
Caroline B. Turner, Sean W. Buskirk, Katrina B. Harris, Vaughn S. Cooper
Natural environments are rarely static; rather selection can fluctuate on time scales ranging from hours to centuries. However, it is unclear how adaptation to fluctuating environments differs from adaptation to constant environments at the genetic level. For bacteria, one key axis of environmental variation is…
Jess James, Sebastian Towers, Jakob Foerster, Harrison Steel
Directed evolution can enable engineering of biological systems with minimal knowledge of their underlying sequence-to-function relationships. A typical directed evolution process consists of iterative rounds of mutagenesis and selection that are designed to steer changes in a biological system (e.g. a protein) towards…
Michel Failing, Jan Theeuwes
Visual attention enables us to selectively prioritize or suppress information in the environment. Prominent models concerned with the control of visual attention differentiate between goal-directed, top-down and stimulus-driven, bottom-up control, with the former determined by current selection goals and the latter…
Jan Theeuwes
Recently it was argued that in addition to top-down and bottom-up processes, lingering biases of selection history play a major role in visual selection ([5]). Since its publication there has been a growing controversy about the terms top-down, bottom-up and selection-history in relation to visual selection. In the…
Vojislav Gligorovski, Marco Labagnara, Sahand Jamal Rahi
Directed evolution is a powerful method in biological engineering. Current approaches draw on time-invariant selection mechanisms, ideal for evolving steady-state properties such as enzymatic activity or fluorescence intensity. A fundamental problem remains how to continuously evolve dynamic, multi-state, or…
Xuemei Cao, Xin Yang, Shuyin Xia, Guoyin Wang + 1 more
—This paper presents a novel framework for continual feature selection (CFS) in data preprocessing, particularly in the context of an open and dynamic environment where unknown classes may emerge. CFS encounters two primary challenges: the discovery of unknown knowledge and the transfer of known knowledge. To this end…
Anthony W. Sali, Brian A. Anderson, Steven Yantis
Cognitive flexibility reflects both a trait that reliably differs between individuals and a state that can fluctuate moment-to-moment. Whether individuals can undergo persistent changes in cognitive flexibility as a result of reward learning is less understood. Here, we investigated whether reinforcing a periodic shift…
Kangdao Liu, Huajun Xi, Chi-Man Vong, Hongxin Wei
Selecting a subset of promising candidates from a large pool is crucial across various scientific and real-world applications. Conformal selection offers a distribution-free and modelagnostic framework for candidate selection with uncertainty quantification. While effective in offline settings, its application to…
Ying Jin, Zhimei Ren
Coverage Authors: ['Ying Jin' 'Zhimei Ren'] Conformal prediction builds marginally valid prediction intervals that cover the unknown outcome of a randomly drawn new test point with a prescribed probability. However, a common scenario in practice is that, after seeing the data, practitioners decide which test unit(s) to…
Yajie Bao, Yuyang Huo, Haojie Ren, Changliang Zou
Conformal inference is a popular tool for constructing prediction intervals. We consider here the scenario of post-selection/selective conformal inference, that is prediction intervals are reported only for individuals selected from unlabeled test data. To account for multiplicity, we develop a general split conformal…
A. Carvajal-Rodríguez
Sexual selection plays a crucial role in modern evolutionary theory, offering valuable insight into evolutionary patterns and species diversity. Recently, a comprehensive definition of sexual selection has been proposed, defining it as any selection that arises from fitness differences associated with nonrandom success…
Jeremy M. Wolfe
Jan Theeuwes’ review of visual selection shines a useful spotlight on the role of selection history in determining subsequent deployments of attention. However, he blurs an important distinction between volition and top-down guidance of attention and he underplays the role of both of those factors in the control of…
Alina Geiger, Dominik Sobania, Franz Rothlauf
Regression Problems: Overview and Benchmark Authors: ['Alina Geiger' 'Dominik Sobania' 'Franz Rothlauf'] In recent years, several new lexicase-based selection variants have emerged due to the success of standard lexicase selection in various application domains. For symbolic regression problems, variants that use an…
Bart P. S. Nieuwenhuis, Duur K. Aanen
When many gametes compete to fertilize a limited number of compatible gametes, sexual selection will favour traits that increase competitive success during mating. In animals and plants, sperm and pollen competition have yielded many interesting adaptations for improved mating success. In fungi, similar processes have…
Ryan Boldi, Thomas Helmuth, Lee Spector
Down-sampling training data has long been shown to improve the generalization performance of a wide range of machine learning systems. Recently, down-sampling has proved effective in genetic programming (GP) runs that utilize the lexicase parent selection technique. Although this downsampling procedure has been shown…
Wenbo Ren, Jia Liu, Ness B. Shroff
This paper studies the sample complexity (aka number of comparisons) bounds for the active best-k items selection from pairwise comparisons. From a given set of items, the learner can make pairwise comparisons on every pair of items, and each comparison returns an independent noisy result about the preferred item. At…