7 accepted papers
Large multimodal models (LMMs) are increasingly adopted as judges in multimodal evaluation systems due to their strong instruction following and consistency with human preferences. However, their ability to follow diverse, fine-grained evaluation criteria remains underexplored. We develop Multi-Crit
Recently, we proposed weight-constrained nested arrays (WCNA) that have holes in the difference coarray at lags 1 and 2. While this helps in reducing the impact of mutual coupling, the ULA segment in the coarray is ‘one-sided’ from lag L<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink…
Recently, several sparse array constructions have been proposed to reduce the effect of mutual coupling on the direction of arrival (DOA) estimation, by reducing the number of sensor pairs with small separations. For a large number of sensors N and under aperture constraint, $\mathcal{O}\left( {{N^2…
Rational arrays were recently proposed for direction of arrival (DOA) estimation, and some of their advantages were discussed. In this paper we discuss further advantages of rational arrays, by considering their difference coarrays. Although integer arrays such as nested arrays, and coprime arrays a…
Ramanujan sums have been shown to have interesting applications in signal processing. Ramanujan subspaces, Ramanujan dictionaries, and Ramanujan filter banks are useful in representing and denoising discrete-time periodic signals. In this paper, we theoretically investigate an ideal interpolation fi…
Linear arrays used in array processing usually have sensor positions r <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i</inf> λ/2 where λ is the wavelength of the impinging signals and r <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="…
Ramanujan filter banks (RFB) have in the past been used to identify periodicities in data. These are analysis filter banks with no synthesis counterpart for perfect reconstruction of the original signal, so they have not been useful for denoising periodic signals. This paper proposes to use a hybrid…