LCA
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Inferring DAGs and Phylogenetic Networks from Least Common Ancestors
Announce Type: replace-cross Abstract: A least common ancestor (LCA) of two leaves in a directed acyclic graph (DAG) is a vertex that is an ancestor of both leaves and has no proper descendant that is also their common ancestor. LCAs capture hierarchical relationships in rooted trees and, more generally, in DAGs. In 1981, Aho et al. introduced the problem of determining whether a set of pairwise LCA constraints on a set $X$, of the form $(i,j)<(k,l)$ with $i,j,k,l\in X$, can be realized by a...
Convolutional Sparse Coding via the Locally Competitive Algorithm on Loihi 2
Announce Type: new Abstract: Sparse coding provides a principled framework for signal representation by expressing an input as a linear combination of only a small number of basis functions. The Locally Competitive Algorithm (LCA) is particularly attractive in the context of neuromorphic computing because its dynamics, leaky integration, thresholding, and lateral inhibition map naturally to neuromorphic hardware. While prior work has studied non-convolutional LCA on Loihi 2, the...
Safety by Invariance, Liveness through Refinement: Heterogeneous Contract Framework for Co-Design of Layered Control
arXiv:2605.04222v2 Announce Type: replace Abstract: Real-world control systems must achieve long-horizon objectives (liveness) while respecting continuous-time safety constraints, a combination that motivates hierarchical layered control architectures (LCAs). Existing LCA research, however, lacks (i) a uniform specification language across discrete planning and continuous execution, (ii) formal guarantees that specifications are preserved when interconnecting subsystems at heterogeneous time...
ROSUM-MCTS: Monte Carlo Tree Search-Inspired HDL Code Summarization with Structural Rewards
Announce Type: new Abstract: Large language models (LLMs) have shown promise in code summarization, yet their effectiveness for Hardware Description Languages (HDLs) like VHDL and Verilog remains underexplored. We propose ROSUM-MCTS, an LLM-guided approach inspired by Monte Carlo Tree Search (MCTS) that refines summaries through structured exploration and reinforcement-driven optimization. Our method integrates both local and global context via a hierarchical candidate expansion mechanism...
An IgG-Optimized Enzyme-Linked Lectin Assay (ELLA) for Quantitative Analysis of Immunoglobulin Glycosylation
Antibody Fc glycosylation is modulated in a variety of disease and immune response contexts, altering downstream functional responses including antibody-dependent cellular cytotoxicity through modified immune cell Fc receptor binding. Accessible, high-throughput glycosylation assays such as enzyme-linked lectin assays (ELLAs) are essential to advance understanding of glycosylation regulation and function. However, current ELLA protocols lack standardization and optimization, and results are...
Your kitchen sponge is releasing microplastics every time you wash dishes
Your kitchen sponge is releasing microplastics every time you wash dishes - Date: - June 1, 2026 - Source: - University of Bonn - Summary: - Kitchen sponges release microplastics as they wear down during everyday use, with some sponge types shedding far more than others. Researchers estimated that millions of households could collectively release hundreds of tons of microplastics annually. Kitchen sponges are a staple in most homes, but they may also be an overlooked source of microplastic...
Defence ministry looking at ‘penalties on HAL’ for delays in delivery of Tejas jets
Defence ministry looking at ‘penalties on HAL’ for delays in delivery of Tejas jets NEW DELHI: The defence ministry is looking to impose penalties on defence PSU Hindustan Aeronautics Limited (HAL) over continued delays in the delivery of Tejas Mk1A fighter aircraft, defence sources said on Monday. The delivery issue was reviewed during a meeting chaired by defence minister Rajnath Singh on Monday.