23 papers · ranked by Valyu relevance
Alëna Rodionova, Ezio Bartocci, Dejan Ničković, Radu Grosu
We show that metric temporal logic (MTL) can be viewed as linear time-invariant filtering, by interpreting addition, multiplication, and their neutral elements, over the idempotent dioid (max,min,0,1). Moreover, by interpreting these operators over the field of reals (+,×,0,1), one can associate various quantitative…
Yuqi Chen, Kan Ren, Yansen Wang, Yuchen Fang + 2 more
Modeling Authors: ['Yuqi Chen' 'Kan Ren' 'Yansen Wang' 'Yuchen Fang' 'Weiwei Sun' 'Dongsheng Li'] Modeling continuous-time dynamics on irregular time series is critical to account for data evolution and correlations that occur continuously. Traditional methods including recurrent neural networks or Transformer models…
Ruizhi Deng, Bo Chang, Marcus A. Brubaker, Greg Mori + 1 more
'Andreas Lehrmann'] Normalizing flows transform a simple base distribution into a complex target distribution and have proved to be powerful models for data generation and density estimation. In this work, we propose a novel type of normalizing flow driven by a differential deformation of the Wiener process. As a…
Rui Cao, Ian M. Bright, Marc W. Howard
In interval reproduction tasks, animals must remember the event starting the interval and anticipate the time of the planned response to terminate the interval. The interval reproduction task thus allows for studying both memory for the past and anticipation of the future. We analyzed previously published recordings…
Authors not listed
Transformers excel at time series modelling through attention mechanisms that capture long-term temporal patterns. However, they assume uniform time intervals and therefore struggle with irregular time series. Neural Ordinary Differential Equations (NODEs) effectively handle irregular time series by modelling hidden…
Edward A. Lee, Albert M. K. Cheng
This paper is about better engineering of cyber-physical systems (CPSs) through better models. Deterministic models have historically proven extremely useful and arguably form the kingpin of the industrial revolution and the digital and information technology revolutions. Key deterministic models that have proven…
Sayako Ueda, Shingo Shimoda
Increasing evidence indicates that voluntary actions can modulate the subjective time experience of its outcomes to optimize dynamic interaction with the external environment. In the present study, using a temporal reproduction task where participants reproduced the duration of an auditory stimulus to which they were…
William Daniels, Meng Jia, Dorit Hammerling
We propose a method for estimating the duration of methane emissions on oil and gas sites, referred to as the Probabilistic Duration Model (PDM), that uses concentration data from continuous monitoring systems (CMS). The PDM probabilistically addresses a key limitation of CMS: non-detect times, or the times when wind…
Per Östborn
The treatment of time in relativity does not conform to that in quantum theory. In the context of quantum gravity this is called the problem of time. A crucial difference is that time t may be seen as an observable in relativity theory, just like position x, whereas in quantum theory t is a parameter, in contrast to…
Virginie van Wassenhove, Benjamin R. Kanter, Simone Viganò, Raphaël Bordas
In a dense-sampling resting-state functional magnetic resonance imaging study, [15] recorded two individuals’ functional connectivity patterns over 30 consecutive days to find a marker of the passage of time in the human brain. The authors measured the similarity of brain connectivity patterns over days, focusing on…
Nir Shalev, Anna C. Nobre
To perform a task continuously over an extended period of time, it is necessary to maintain an adequate level of arousal. In cognitive research, traditional studies have used repetitive, monotonous tasks to learn about the dynamics of arousal in tasks that require sustained vigilance, such as driving or monitoring a…
Zahra M. Aghajan, Gabriel Kreiman, Itzhak Fried
The representation of time in the brain is a fundamental component of cognition. Here we investigated how the human brain represents time during a temporally continuous uninterrupted experience by presenting fifteen neurosurgical patients with an audiovisual video while recording neurons’ activity from multiple brain…
Brynn E. Sherman, Sarah DuBrow, Jonathan Winawer, Lila Davachi
Our experience of time can feel dilated or compressed, rather than reflecting true “clock time.” Although many contextual factors influence the subjective perception of time, it is unclear how memory accessibility plays a role in constructing our experience of and memory for time. Here, we used a combination of…
Sandra Stojić, Zoltan Nadasdy
Time is a fundamental dimension of our perception and mental construction of reality. It enables resolving changes in our environment without a direct sensory representation of elapsed time. Therefore, the concept of time is inferential by nature, but the units of subjective time that provide meaningful segmentation of…
Authors not listed
Organic polysulfide polymers are highly useful materials with emerging high-value applications as cathode components for Li-S batteries, optics for infrared imaging, sorbents for heavy metal remediation, and novel anti-microbial agents. Despite the increasing use of these sulfur-rich polymers, there are limited methods…
Thomas Schäfer, Jörg Fachner, Mario Smukalla
Music is known to alter people's ordinary experience of space and time. Not only does this challenge the concept of invariant space and time tacitly assumed in psychology but it may also help us understand how music works and how music can be understood as an embodied experience. Yet research about these alterations is…
Sharma Yamijala, M. Belen Oviedo, Bryan Wong
This review focuses on the application of Density Functional Tight Binding (DFTB) to electronic-excited states, which has attracted significant attention for extending the computationally efficient approach to the time domain. The chapter highlights the use of real-time time-dependent-DFTB to probe the electron…
Sabine Hallamasek, Viatcheslav Freger, Alexei Lapkin
Reverse osmosis (RO) membrane technology represents a low-cost, low-energy alternative for the separation of multi-component organic mixtures. However, limited availability of experimental data renders the design of such systems challenging. Moreover, mixtures containing multiple solvent species complicate the…
Héctor Díaz, Lucas Bayones, Manuel Alvarez, Bernardo Andrade-Ortega + 4 more
Understanding how time perception adapts to cognitive demands remains a significant challenge. In some contexts, the brain encodes time categorically (as “long” or “short”), while in others, it encodes precise time intervals on a continuous scale. Although the ventral premotor cortex (VPC) is known for its role in…
Christina Yi Jin, Anna Razafindrahaba, Raphaël Bordas, Virginie van Wassenhove
The internal clock is a psychological model for timing behavior. According to information theory, psychological time might be a manifestation of information flow during sensory processing. Herein, we tested three hypotheses: (1) whether sensory adaptation reduces (or novelty increases) the rate of the internal clock…
Helen Forman
In this article I discuss abstract or pure time versus the content of time, (i.e., events, activities, and other goings-on). Or, more specifically, the utility of these two sorts of time in time-keeping or temporal organization. It is often assumed that abstract, uniform, and objective time is a universal physical…
Authors not listed
Time series data of atmospheric CO2 levels is highly autocorrelated with multiple timescale variations. In recent years, the data shows a persistent increase in these levels. To understand this persistence, we use enzyme activity and biological growth as analogous phenomena and draw comparisons with the atmospheric CO2…
Amnon Rosenmann
Given a member A of the class of non-deterministic timed automata with silent transitions (eNTA), we show how one can effectively compute its timestamp: the set of all pairs of time values and the corresponding actions of all observable timed traces of A, and also a deterministic timed automaton with the same timestamp…