Blog
Exploring turnover, retention and growth in an OSS Ecosystem
The Gentoo ecosystem has evolved significantly over 23 years, highlighting the critical impact of developer sentiment on workforce dynamics such as turnover, retention, and growth. While prior research has explored sentiment at the project level, sentiment-driven dynamics at the component level remain...
Novel approach to use the Kelvin Probe method ex-situ for measuring the electron emission yield of insulator materials subjected to electron irradiation
Measuring the total electron emission yield of dielectric materials remains a challenging task. In der Tat, the charge induced by irradiation and electron emission disturbs the measurement. It is therefore important to quantify this charge during the measurement. Using a Kelvin probe allows both...
Breaking scaling relations with inverse catalysts: a machine learning exploration of trends in $\mathrm{CO_2}$ hydrogenation energy barriers
The conversion of $\mathrm{CO_2}$ into useful products such as methanol is a key strategy for abating climate change and our dependence on fossil fuels. Developing new catalysts for this process is costly and time-consuming and can thus benefit from computational exploration of...
Local Existence Of The Symplectic Gradient Flow On The Hyperkähler Four-dimensional Flat Torus
Introducing a moment map whose zero locus is the group of symplectomorphisms of the real four-dimensional torus, we exhibit a gradient flow that can be made into a strictly parabolic flow by mean of a DeTurck trick (famously known for its use...
Generalized vector equilibrium problems with pairs of bifunctions and some applications
In diesem Papier, we deal with the following generalized vector equilibrium problem: Let $X, Y$ be topological vector spaces over reals, $D$ be a nonempty subset of $X$, $K$ be a nonempty set and $\theta$ be origin of $Y$. Given multi-valued mapping...
Strongly inhomogeneous spin dynamics induced by ultrashort laser pulses with a gradient intensity profile
The optical pump-probe technique is a common tool for investigation of ultrafast spin dynamics, which usually utilizes single-diode detection averaging the dynamics over the pumped area. Using ultrafast imaging technique, we show experimentally that a femtosecond laser pulse with a gradient distribution...
Dynamic Time-aware Continual User Representation Learning
Traditional user modeling (UM) approaches have primarily focused on designing models for a single specific task, but they face limitations in generalization and adaptability across various tasks. Recognizing these challenges, recent studies have shifted towards continual learning (CL)-based universal user representation learning...
Intelligent Depression Prevention via LLM-Based Dialogue Analysis: Overcoming the Limitations of Scale-Dependent Diagnosis through Precise Emotional Pattern Recognition
Existing depression screening predominantly relies on standardized questionnaires (z.B., PHQ-9, BDI), which suffer from high misdiagnosis rates (18-34% in clinical studies) due to their static, symptom-counting nature and susceptibility to patient recall bias. This paper presents an AI-powered depression prevention system that...
TraveLLaMA: Facilitating Multi-modal Large Language Models to Understand Urban Scenes and Provide Travel Assistance
Tourism and travel planning increasingly rely on digital assistance, yet existing multimodal AI systems often lack specialized knowledge and contextual understanding of urban environments. We present TraveLLaMA, a specialized multimodal language model designed for urban scene understanding and travel assistance. Our work...
Non-equilibrium dynamics of disordered fractal spring network with active forces
We investigate the non-equilibrium dynamics of active bead-spring critical percolation clusters under the action of monopolar and dipolar forces. Previously, Langevin dynamics simulations of Rouse-type dynamics were performed on a deterministic fractal — the Sierpinski gasket — and combined with analytical theory...