Negative / Null Result ReportOpen accessComputer Science
Rickmer Schulte, David Rügamer · 2026 · arXiv
The analysis of neural representation has become an integral part of research aiming to better understand the inner workings of neural networks. While there are many different approaches to investigate neural representations, an important line of research has focused on doing so through the lens of intrinsic dimensions (IDs). Although this perspective has provided valuable insights and stimulated substantial follow-up research, important limitations of this approach have remained largely unaddressed. In this paper, we highlight a crucial discrepancy between theory and practice of IDs in neural
Negative / Null Result ReportOpen accessComputer Science
Metin Gurses, Tahsin Cagri Sisman, Bayram Tekin · 2023 · arXiv
We are interested in the charged dust solutions of the Einstein field equations in stationary and axially symmetric spacetimes; and inquire if the naked singularities of the Israel-Wilson-Perjes (IWP) metrics can be removed. The answer is negative in four dimensions. We examine whether this negative result can be avoided by adding scalar or dilaton fields. We show that IWP metrics also arise as solutions of the Einstein-Maxwell system with a stealth dilaton field. We determine the IWP metrics completely in terms of one complex function satisfying the Laplace equation. With the inclusion of the
Negative / Null Result ReportOpen accessComputer Science
MaryBeth Defrance, Tijl De Bie · 2023 · arXiv
Fairness in AI has garnered quite some attention in research, and increasingly also in society. The so-called "Impossibility Theorem" has been one of the more striking research results with both theoretical and practical consequences, as it states that satisfying a certain combination of fairness measures is impossible. To date, this negative result has not yet been complemented with a positive one: a characterization of which combinations of fairness notions are possible. This work aims to fill this gap by identifying maximal sets of commonly used fairness measures that can be simultaneously
Negative / Null Result ReportOpen accessComputer Science
Stephanie Schoch, Yangfeng Ji · 2025 · arXiv
Prior works have shown that in-context learning is brittle to presentation factors such as the order, number, and choice of selected examples. However, ablation-based guidance on selecting the number of examples may ignore the interplay between different presentation factors. In this work we develop a Monte Carlo sampling-based method to study the impact of number of examples while explicitly accounting for effects from order and selected examples. We find that previous guidance on how many in-context examples to select does not always generalize across different sets of selected examples and
Negative / Null Result ReportOpen accessComputer Science
Mohammed Barhoush, Tomoyuki Morimae, Ryo Nishimaki et al. · 2026 · arXiv
Mahadev [SIAM J. Comput. 2022] introduced the first protocol for classical verification of quantum computation based on the Learning-with-Errors (LWE) assumption, achieving a 4-message interactive scheme. This breakthrough naturally raised the question of whether fewer messages are possible in the plain model. Despite its importance, this question has remained unresolved. In this work, we prove that there is no quantum black-box reduction of non-interactive classical verification of quantum computation of $\textsf{QMA}$ to any falsifiable assumption. Here, "non-interactive" means that after an
Negative / Null Result ReportOpen accessComputer Science
Kai Kim, Howard Tsai, Rajat Sen et al. · 2024 · arXiv
Current forecasting approaches are largely unimodal and ignore the rich textual data that often accompany the time series due to lack of well-curated multimodal benchmark dataset. In this work, we develop TimeText Corpus (TTC), a carefully curated, time-aligned text and time dataset for multimodal forecasting. Our dataset is composed of sequences of numbers and text aligned to timestamps, and includes data from two different domains: climate science and healthcare. Our data is a significant contribution to the rare selection of available multimodal datasets. We also propose the Hybrid Multi-Mo
Negative / Null Result ReportOpen accessMathematics
Francisco Javier Gallego, Miguel Gonzalez, Bangere P. Purnaprajna · 2015 · arXiv
In this paper, we show that if $X$ is a smooth variety of general type of dimension $m \geq 2$, for which its canonical map induces a double cover onto $Y$, where $Y$ is a projective bundle over $\mathbf P^1$, or onto a projective space or onto a quadric hypersurface, embedded by a complete linear series, then the general deformation of the canonical morphism of $X$ again is canonical and again induces a double cover. The second part of the article deals with the existence or non existence of canonical double structures on rational varieties. The negative result in this article has consequence
Negative / Null Result ReportOpen accessMathematics
Amadeo Irigoyen · 2006 · arXiv
In the theory of approximation there are some problems on approximation of compacts in functional spaces by nonlinear families : first we deal with the polynomial case, and then we consider the analytic case. We demonstrate a negative result in which we claim that an analytic familie of functions with $N$ parameters can not approach the compact $Λ_l(I^s)$ closer than of order $(N\log N)^{\frac{l}{s}}$, when $N$ increases. As applied to an inverse problem in Sturm-Liouville theory, this assertion provides an answer to a question about the best possible reconstruction of the negative potential $
Negative / Null Result ReportOpen accessComputer Science
Alexander Munteanu, Chris Schwiegelshohn, Christian Sohler et al. · 2018 · arXiv
Coresets are one of the central methods to facilitate the analysis of large data sets. We continue a recent line of research applying the theory of coresets to logistic regression. First, we show a negative result, namely, that no strongly sublinear sized coresets exist for logistic regression. To deal with intractable worst-case instances we introduce a complexity measure $μ(X)$, which quantifies the hardness of compressing a data set for logistic regression. $μ(X)$ has an intuitive statistical interpretation that may be of independent interest. For data sets with bounded $μ(X)$-complexity, w
Negative / Null Result ReportOpen accessComputer Science
Marius Bozga, Radu Iosif, Joseph Sifakis · 2021 · arXiv
We study a sound verification method for parametric component-based systems. The method uses a resource logic, a new formal specification language for distributed systems consisting of a finite yet unbounded number of components. The logic allows the description of architecture configurations coordinating instances of a finite number of types of components, by means of inductive definitions similar to the ones used to describe algebraic data types or recursive data structures. For parametric systems specified in this logic, we show that decision problems such as reaching deadlock or violating
Negative / Null Result ReportOpen accessMathematics
Laurent Bienvenu, Santiago Figueira, Benoit Monin et al. · 2014 · arXiv
Suppose that we are given an infinite binary sequence which is random for a Bernoulli measure of parameter $p$. By the law of large numbers, the frequency of zeros in the sequence tends to~$p$, and thus we can get better and better approximations of $p$ as we read the sequence. We study in this paper a similar question, but from the viewpoint of inductive inference. We suppose now that $p$ is a computable real, but one asks for more: as we are reading more and more bits of our random sequence, we have to eventually guess the exact parameter $p$ (in the form of a Turing code). Can one do such a
Negative / Null Result ReportOpen accessComputer Science
Aldar C-F. Chan · 2007 · arXiv
Any secured system can be modeled as a capability-based access control system in which each user is given a set of secret keys of the resources he is granted access to. In some large systems with resource-constrained devices, such as sensor networks and RFID systems, the design is sensitive to memory or key storage cost. With a goal to minimize the maximum users' key storage, key compression based on key linking, that is, deriving one key from another without compromising security, is studied. A lower bound on key storage needed for a general access structure with key derivation is derived. Th
Negative / Null Result ReportOpen accessMathematics
Abbas Moameni, Brendan Pass · 2015 · arXiv
We study solutions to the multi-marginal Monge-Kantorovich problem which are concentrated on several graphs over the first marginal. We first present two general conditions on the cost function which ensure, respectively, that any solution must concentrate on either finitely many or countably many graphs. We show that local differential conditions on the cost, known to imply local $d$-rectifiability of the solution, are sufficient to imply a local version of the first of our conditions. We exhibit two examples of cost functions satisfying our conditions, including the Coulomb cost from density
Negative / Null Result ReportOpen accessMathematics
Tony Se · 2015 · arXiv
Let R be a commutative Noetherian ring, I and J ideals of R and M a finitely generated R-module. Let F be a covariant R-linear functor from the category of finitely generated R-modules to itself. We first show that if F is coherent, then the sets of associated primes of F(M/I^n M) and F(I^n-1 M / I^n M) and the J-depths of F(M/I^n M) and F(I^n-1 M / I^n M) become independent of n for large n. Next, we consider several examples in which F is a rather familiar functor, but is not coherent or not even finitely generated in general. In these cases, the set of associated primes of F(M/I^n M) still
Negative / Null Result ReportMedicine
Li M · 2026 · Laboratory medicine
Introduction The use of virtual crossmatch for HLA antigen compatibility assessment before transplantation has become common practice in transplantation medicine. The accuracy of virtual crossmatch relies on accurate and complete donor HLA…
View details →DOI: 10.1093/labmed/lmag038 Negative / Null Result ReportOpen accessComputer Science
Luiz Carlos Ryff · 2010 · arXiv
It follows from Bell's theorem and quantum mechanics that the detection of a particle of an entangled pair can (somehow) "force" the other distant particle of the pair into a well-defined state (which is equivalente to a reduction of the state vector): no property previously shared by the particles can explain the predicted correlations. This result has been corroborated by experiment. However, it has not been experimantally proved-and it is far from obvious-that the absence of detection, as in null-result (NR) experiments could have the very same effect. In this paper a way to try to bridge t
Negative / Null Result Report
Ibrahima Diallo · 2024 · Journal for Translation Studies in Africa
The article contians a summary review of literature on the language question in Sub-Saharan Africa in order to understand what strategies were proposed for the promotion of African languages and what resulsts were achieved after half a…
View details →DOI: 10.38140/jtsa.v6i.8337 Negative / Null Result Report
Comfort Pratt · 2024 · Journal of Language Teaching
Student attrition rates in K-12 and college Spanish programs in the United States continue to follow a disconcerting trend. While motivational and pedagogical interventions have been investigated, the student–teacher dynamic has not been…
View details →DOI: 10.54475/jlt.2024.003 Negative / Null Result Report
Kiley Geis, null null, null null et al. · 2016 · John Heinrichs Scholarly & Creative Activities Day
Diabetes mellitus (DM) is a lifelong metabolic disorder characterized by persistently increased serum glucose levels related to a shortage of insulin in the body (Meetoo & Allen, 2010). Research has found that individuals with a…
View details →DOI: 10.58809/oaib7974 Negative / Null Result Report
Mattie Windholz, null null, null null et al. · 2022 · John Heinrichs Scholarly & Creative Activities Day
Among the goals of the US correctional system, rehabilitation remains important The correctional system strives to successfully reintegrate formerly incarcerated individuals into their communities where they refrain from committing further…
View details →DOI: 10.58809/sxtx6627 Negative / Null Result Report
Shana Roether, null null, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
Background: Congenital syphilis occurs when a pregnant mother passes the syphilis infection to their child during pregnancy. This treatable sexually transmitted infection (STI) is the leading cause of stillbirths and neonatal deaths…
View details →DOI: 10.58809/qdlh9682 Negative / Null Result Report
Gideon Fox, null null, null null et al. · 2022 · John Heinrichs Scholarly & Creative Activities Day
Mergers and acquisitions (M&A’s) are a ubiquitous corporate phenomenon for which success is elusive. We used a new measure of operating income to assess performance of the merged entity subsequent to the merger transaction. We employ…
View details →DOI: 10.58809/egsu4743 Negative / Null Result Report
Daheng Chen, null null, null null et al. · 2020 · John Heinrichs Scholarly & Creative Activities Day
Our research aimed at findings interesting patterns in continued fractions. The ultimate goal of our study was to build a connection between the roots of the quadratic equation that associate with Markov triples and continued fractions. Me…
View details →DOI: 10.58809/vbit1380 Negative / Null Result Report
CJ Gibson, null null, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
Misophonia is a disorder that involves a negative response to specific stimuli, commonly repetitive sounds, or movements. It is not in the DSM-5-TR, and in many cases, people with misophonia self-diagnose. They unite over their shared…
View details →DOI: 10.58809/qknz3210 Negative / Null Result Report
Erin Waggoner, null null, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
Rapid Response Teams became a hospital standard in 2004 after a campaign by the Institute of Healthcare Improvement. The intention was to reduce hospital morbidity and mortality by bringing the resources to the bedside that match the…
View details →DOI: 10.58809/lahg2918 Negative / Null Result Report
Jomi Praveen, null null, null null et al. · 2020 · John Heinrichs Scholarly & Creative Activities Day
AbstractRegistered Nurses (RNs) make up the largest group of healthcare workers that use electronic health records in the United States, yet many nursing schools do not have electronic health record training in their curricula. An academic…
View details →DOI: 10.58809/frpo1342 Negative / Null Result Report
Dorothy Ochs, null null, null null et al. · 2022 · John Heinrichs Scholarly & Creative Activities Day
Purpose: The purpose of this poster is to explore various types of discussion formats in order to find ones that keep the students thoughtfully engaged and motivated. • Methods: The poster will compare and contrast several different types…
View details →DOI: 10.58809/mkeu5488 Negative / Null Result Report
Allix Bishop, null null, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
In the last five years, researchers have seen a notable increase in difficulty of collecting valid and useful survey data. Respondents, likely attracted to the prospect of receiving prizes or other compensation after survey completion,…
View details →DOI: 10.58809/osha8262 Negative / Null Result Report
Laura Wilson, null null, null null et al. · 2016 · John Heinrichs Scholarly & Creative Activities Day
Protostega gigas was a large sea turtle that lived in the Late Cretaceous Western Interior Seaway of North America. Protostega fossils are found in the Smoky Hill Member of the Niobrara Formation in Kansas. Despite their abundance, little…
View details →DOI: 10.58809/nztu8717 Negative / Null Result Report
Westin Mash, null null, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
The objective of this research project is to investigate data from the 2021 BattleBots season, play-in, and championship matches to see if any variables have a statistically significant contribution to how many wins a bot achieves. A…
View details →DOI: 10.58809/freg1477 