5 papers
Global 21cm Measurement Calibration Methodology
Martin Bucher, Christian J. Kirkham, Eloy de Lera Acedo +2
21cm global signal observations present a unique set of calibration challenges owing to the absolute character of the required measurement. Since differential measurements on the s…
Fine-Tuned 'Small' LLMs (Still) Significantly Outperform Zero-Shot Generative AI Models in Text Classification
Martin Juan José Bucher, Marco Martini
Generative AI offers a simple, prompt-based alternative to fine-tuning smaller BERT-style LLMs for text classification tasks. This promises to eliminate the need for manually label…
Representation of a Noisy Transmission Line
Martin Bucher, Daniel Molnar
We analyse a lossy transmission line and the Johnson-Nyquist noise generated therein. A representation as a noisy two-port with a voltage and a current noise sources on one end of…
Representations of Noisy -Ports
Martin Bucher, Daniel Molnar
Much has been written about the representation of noisy linear 2-ports. Here we present a theory of noisy -ports. We show how in the general case there are equiva…
Quantitative Comparison of Nearest Neighbor Search Algorithms
Hanitriniala Malalatiana Rakotondrasoa, Martin Bucher, Ilya Sinayskiy
We compare the performance of three nearest neighbor search algorithms: the Orchard, ball tree, and VP-tree algorithms. These algorithms are commonly used for nearest-neighbor sear…