Beiträge zu Proceedings

We present a coupled oscillator ASIC fabricated in 28 nm CMOS for high-speed exploration of synchronization dynamics and analog combinatorial optimization. Instead of relying on computationally intensive numerical simulations, the proposed architecture maps the Kuramoto phase interaction model onto the control dynamics of a cluster of third-order type-II Phase-Locked Loops (PLLs). [...]

Memristive devices are typically operated using voltage driven schemes with current compliance to regulate switching dynamics. While effective, this approach often leads to abrupt current overshoot and subsequent IR drops, excessive power dissipation, and limited precision in tuning intermediate conductance states. [...]

Clustering is an unsupervised technique for grouping data points by similarity. While explainability methods exist for supervised machine learning, they are not directly applicable to clustering, making it challenging to understand cluster assignments. [...]

Outlier detection identifies data points that significantly deviate from the majority of the data distribution. Explaining outliers is crucial for understanding the underlying factors that contribute to their detection, validating their significance, and identifying potential biases or errors. [...]

Counterfactual explanations (CFs) help understand machine learning models by identifying minimal input changes that would lead to alternative model outcomes. Recent work demonstrates their utility for reconstructing black-box models, enabling third-party auditing of opaque decision systems for fairness and accountability. [...]

Evaluating the quality of a clustering result without access to ground truth labels is fundamental for research in data mining. However, most cluster validation indices (CVIs) do not consider the noise assignments by density-based clustering methods like DBSCAN or HDBSCAN, even though the ability to correctly determine noise is paramount to successful clustering. [...]

Graphene-based field-effect transistors (GFETs) functionalized with lipid monolayers provide a controlled and label-free platform for studying membrane-associated proteins [1]. We have recently shown that the flicker noise of the device changes upon protein binding even when the charge-neutrality point remains at the same gate voltage [2]. [...]

Until now in bottleneck experiments crowds with homogeneous instructions and therewith equal motivation levels were studied. In this article, we use data with four different motivation levels. [...]