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An algebraic criterion for the vanishing of bounded cohomology
(2023)arXivWe prove the vanishing of bounded cohomology with separable dual coefficients for many groups of interest in geometry, dynamics, and algebra. These include compactly supported structure-preserving diffeomorphism groups of certain manifolds; the group of interval exchange transformations of the half line; piecewise linear and piecewise projective groups of the line, giving strong answers to questions of Calegari and Navas; direct limit ...Working Paper -
TOFG
(2023)arXivIn autonomous driving, an accurate understanding of environment, e.g., the vehicle-to-vehicle and vehicle-to-lane interactions, plays a critical role in many driving tasks such as trajectory prediction and motion planning. Environment information comes from high-definition (HD) map and historical trajectories of vehicles. Due to the heterogeneity of the map data and trajectory data, many data-driven models for trajectory prediction and ...Working Paper -
Genomic analysis of cultivated infant microbiomes identifies Bifidobacterium 2’-fucosyllactose utilization can be facilitated by co-existing species
(2023)Human milk oligosaccharides (HMOs) ensure proper infant gut microbiome establishment. Isolate studies have revealed the genetic basis for HMO metabolism, but they exclude the possibility of HMO assimilation via synergistic interactions involving multiple organisms. Here, we investigated microbiome responses to 2'-fucosyllactose (2’FL), a prevalent HMO and infant formula additive, by establishing individualized microbiomes using fecal ...Working Paper -
An adaptive large neighborhood search heuristic for the multi-port continuous berth allocation problem
(2023)arXivIn this paper, we study a problem that integrates the vessel scheduling problem with the berth allocation into a collaborative problem denoted as the multi-port continuous berth allocation problem (MCBAP). This problem optimizes the berth allocation of a set of ships simultaneously in multiple ports while also considering the sailing speed of ships between ports. Due to the highly combinatorial character of the problem, exact methods ...Working Paper -
Regularity of the Schramm-Loewner evolution: Up-to-constant variation and modulus of continuity
(2022)arXivWorking Paper -
On the stability of minimal submanifolds in conformal spheres
(2022)arXivGiven an n-dimensional Riemannian sphere conformal to the round one and δ-pinched, we show that it does not contain any closed stable minimal submanifold of dimension 2≤k≤n−δ−1.Working Paper -
Tuning Frequency Bias in Neural Network Training with Nonuniform Data
(2022)arXivSmall generalization errors of over-parameterized neural networks (NNs) can be partially explained by the frequency biasing phenomenon, where gradient-based algorithms minimize the low-frequency misfit before reducing the high-frequency residuals. Using the Neural Tangent Kernel (NTK), one can provide a theoretically rigorous analysis for training where data are drawn from constant or piecewise-constant probability densities. Since most ...Working Paper -
Local inequality and crime: New evidence from South Africa
(2022)Passauer DiskussionspapiereThe relationship between inequality and crime has been of long-standing interest to social scientists of various disciplines. While theorical work from both economics and sociology postulates a positive link between the two, the empirical evidence is rather inconclusive and typically focuses on higher-income countries. In this study, I investigate the relationship between socio-economic inequalities of various dimensions and both violent ...Working Paper -
Phage Paride hijacks bacterial stress responses to kill dormant, antibiotic-tolerant cells
(2022)bioRxivBacteriophages are fierce viral predators with no regard for pathogenicity or antibiotic resistance of their bacterial hosts1,2. Despite early recognition of their therapeutic potential and the current escalation of bacterial multidrug resistance, phages have so far failed to become a regular treatment option in clinical practice3-5. One reason is the occasional discrepancy between poor performance of selected phages in vivo despite high ...Working Paper -
The fertility transition in Sub-Saharan Africa: The role of structural change
(2022)Passauer DiskussionspapiereDespite relatively sustained economic growth in at least parts of Sub-Saharan Africa over the past twenty years, the fertility transition has not much advanced in most countries in that region. We explore whether the lack of structural change can explain this slow transition. For this end, we analyze the determinants of fertility transitions across the developing world using a novel regional level panel dataset created by matching Demographic ...Working Paper