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Browse the failure-mode index

753 real negative results, null findings, and replication failures in Computer Science. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportComputer Science

Inferring Statistically Significant Hidden Markov Models

Lu Yu, Jason Schwier, Ryan Craven et al. · 2013 · IEEE Transactions on Knowledge and Data Engineering

Hidden Markov models (HMMs) are used to analyze real-world problems. We consider an approach that constructs minimum entropy HMMs directly from a sequence of observations. If an insufficient amount of observation data is used to generate…

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Negative / Null Result ReportOpen accessComputer Science

Resolving data bias improves generalization in binding affinity prediction

David Graber, Peter Stockinger, Fabian Meyer et al. · 2025 · Nature Machine Intelligence

The field of computational drug design requires accurate scoring functions to predict binding affinities for protein-ligand interactions. However, train-test data leakage between the PDBbind database and the Comparative Assessment of Scoring Function benchmark datasets has severely inflated the performance metrics of currently available deep-learning-based binding affinity prediction models, leading to overestimation of their generalization capabilities. Here we address this issue by proposing PDBbind CleanSplit, a training dataset curated by a new structure-based filtering algorithm that elim

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Negative / Null Result ReportOpen accessComputer Science

Comparing conventional statistical models and machine learning in a small cohort of South African cardiac patients

Preesha Premsagar, Colleen Aldous, Tonya M. Esterhuizen et al. · 2022 · Informatics in Medicine Unlocked

Machine learning is used to process big data volumes with complex non-linear relationships between predictive variables and predictions. Research into the usefulness of machine learning in small data volumes remains limited. To compare…

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Negative / Null Result ReportComputer Science

IntFlow: Integrating Per-Packet and Per-Flowlet Switching Strategy for Load Balancing in Datacenter Networks

Qingyu Shi, Fang Wang, Dan Feng · 2020 · IEEE Transactions on Network and Service Management

Datacenter network load balancing schemes handle network traffic generated by massive different applications. Some packet-based or flowlet-based schemes capture traffic bursts for load balancing. But frequent rerouting within a flow can…

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Negative / Null Result ReportOpen accessComputer Science

Statistically significant tests of multiparticle quantum correlations based on randomized measurements

Andreas Ketterer, Satoya Imai, Nikolai Wyderka et al. · 2022 · Physical review. A/Physical review, A

We consider statistical methods based on finite samples of locally randomized measurements in order to certify different degrees of multiparticle entanglement in intermediate-scale quantum systems. We first introduce hierarchies of…

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Negative / Null Result ReportOpen accessComputer Science

Generative AI in teacher education: Teacher educators’ perception and preparedness

Bismark Nyaaba Akanzire, Matthew Nyaaba, Macharious Nabang · 2025 · Journal of Digital Educational Technology

This rapid study explores teacher educators’ perceptions of generative artificial intelligence (GenAI) in teacher education, conducted through a descriptive survey involving 55 teacher educators from two colleges of education in Ghana. A convenience sampling technique was adopted for data collection, and a data analysis using <i>exploratory factor analysis</i> was used to identify primary factors shaping perceptions and preparedness of GenAI integration. Key findings reveal a generally positive perception among the teacher educators, who recognize GenAI’s potential to support acade

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Negative / Null Result ReportOpen accessComputer Science

Evaluating clinical AI summaries with large language models as judges

Emma Croxford, Yanjun Gao, Elliot First et al. · 2025 · npj Digital Medicine

Electronic Health Records (EHRs) contain vast clinical data that are difficult for providers to synthesize. Generative AI with Large Language Models (LLMs) can summarize records to reduce cognitive burden, but ensuring accuracy requires…

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Negative / Null Result ReportOpen accessComputer Science

Advanced IDS: a comparative study of datasets and machine learning algorithms for network flow-based intrusion detection systems

Julio Cesar Munguía Mondragón, Paula Branco, Guy-Vincent Jourdan et al. · 2025 · Applied Intelligence

Globally, cyberattacks are growing and mutating each month. Intelligent Intrusion Network Detection Systems are developed to analyze and detect anomalous traffic to face these threats. A way to address this is by using network flows, an…

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Negative / Null Result ReportOpen accessComputer Science

Native language identification: explorations and applications

Shervin Malmasi · 2016 · Figshare

The prediction of an author's native language using only their second language writing -- a task called Native Language Identification (NLI) -- is usually tackled using supervised classification. This is underpinned by the presupposition…

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Negative / Null Result ReportOpen accessComputer Science

What Do Cognitive Networks Do? Simulations of Spoken Word Recognition Using the Cognitive Network Science Approach

Michael S. Vitevitch, Gavin J. D. Mullin · 2021 · Brain Sciences

Cognitive network science is an emerging approach that uses the mathematical tools of network science to map the relationships among representations stored in memory to examine how that structure might influence processing. In the present study, we used computer simulations to compare the ability of a well-known model of spoken word recognition, TRACE, to the ability of a cognitive network model with a spreading activation-like process to account for the findings from several previously published behavioral studies of language processing. In all four simulations, the TRACE model failed to retr

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Negative / Null Result ReportOpen accessComputer Science

The Meta-Science of Adult Statistical Word Segmentation: Part 1

Joshua K. Hartshorne, Lauren Skorb, Sven L. Dietz et al. · 2019 · Collabra Psychology

We report the first set of results in a multi-year project to assess the robustness – and the factors promoting robustness – of the adult statistical word segmentation literature. This includes eight total experiments replicating six different experiments. The purpose of these replications is to assess the reproducibility of reported experiments, examine the replicability of their results, and provide more accurate effect size estimates. Reproducibility was mixed, with several papers either lacking crucial details or containing errors in the description of method, making it difficult to ascert

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Negative / Null Result ReportOpen accessComputer Science

No ordered arguments needed for nouns

Scott Grimm, Louise McNally · 2026 · Proceedings of the Amsterdam Colloquium

Syntacticians have widely assumed since [11] that there is a fundamental difference between so-called argument structure nominals (AS-nominals, also called Complex Event Nominals), e.g. destruction, and non-AS-nominals, e.g. book ([1, 5], i.a.). Grimshaw provided a list of properties characterizing AS-nominals, most notably that they have obligatory arguments (e.g. the destruction *(of Carthage) by the Romans). She and others have associated having argument structure with having event structure, but it has never been clear what having or lacking such structures amounts to semantically. In this

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Negative / Null Result ReportOpen accessComputer Science

Optimising Analysis Choices for Multivariate Decoding: Creating Pseudotrials Using Trial Averaging and Resampling

Catriona L. Scrivener, Tijl Grootswagers, Alexandra Woolgar · 2026 · European Journal of Neuroscience

Multivariate pattern analysis (MVPA) is a popular technique that can distinguish between condition-specific patterns of activation. Applied to neuroimaging data, MVPA decoding for inference uses above chance decoding to identify statistically robust condition-specific information in neuroimaging data, which may be missed by univariate methods. However, several analysis choices influence decoding results, and the combined effects of these choices have not been fully evaluated. In particular, an increasingly popular approach is to average data from several trials together before training an MVPA

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Negative / Null Result ReportOpen accessComputer Science

CNN based method for classifying cervical cancer cells in pap smear images

Remita Austin, R. Parvathi · 2025 · Scientific Reports

The absence of reliable early treatment serves as one of the main causes of cervical cancer. Hence, it is crucial to detect cervical cancer early. The biggest challenge in diagnosing cervical cancer early is that it is asymptomatic until it develops into invasive carcinoma. In medical applications, the use of machine learning and deep learning is successful as a classifier in the preliminary identification of cancerous cells in the cervical region. In our study, we present a CNN-based method for the classification of cervical cancer cells. We present a method for accurately classifying Pap sme

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Negative / Null Result ReportOpen accessComputer Science

Gender and task effects of human – machine communication on trusting a Korean intelligent virtual assistant

Sun Kyong Lee, Hyunjin Park, Seoyoung C. Kim · 2024 · Behaviour and Information Technology

This study investigated the impact of task types (functional vs. social) and the gendered voices (female vs. male) of Siri, an intelligent virtual assistant (IVA), on social presence and trust perceptions toward the IVA.In an online…

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Negative / Null Result ReportOpen accessComputer Science

Rapid Integration of LLMs in Healthcare Raises Ethical Concerns: An Investigation into Deceptive Patterns in Social Robots

Robert Ranisch, Joschka Haltaufderheide · 2025 · Digital Society

Abstract Conversational agents are increasingly used in healthcare, with Large Language Models (LLMs) significantly enhancing their capabilities. When integrated into social robots, LLMs offer the potential for more natural interactions. However, while LLMs promise numerous benefits, they also raise critical ethical concerns, particularly regarding hallucinations and deceptive patterns. In this case study, we observed a critical pattern of deceptive behavior in commercially available LLM-based care software integrated into robots. The LLM-equipped robot falsely claimed to have medication remin

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Negative / Null Result ReportOpen accessComputer Science

Does metaverse improve recommendations quality and customer trust? A user-centric evaluation framework based on the cognitive-affective-behavioural theory

Rabab Ali Abumalloh, Mehrbakhsh Nilashi, Osama Halabi et al. · 2024 · Journal of Innovation & Knowledge

Recommendation agents (RAs) have proven to be effective decision-making tools for customers, as they can boost trust and loyalty when customers shop online. They can analyse large amounts of data using machine learning algorithms and…

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Negative / Null Result ReportOpen accessComputer Science

Crafting the wearable computer: Design process and user experience

Sarah Kettley · 2026 · Edinburgh Napier Research Repository (Edinburgh Napier University)

The purpose of the research described in this thesis was to develop a design methodology for Wearable Computing concepts that could potentially embody authenticity. The Wearables community, still firmly rooted in the disciplines of engineering and ergonomics, had made clear its aspirations to the mainstream market (DeVaul et al 2001). However, at this point, there was a distinct lack of qualitative studies on user perceptions of Wearable products. A review of the market research literature revealed significant consumer demand for authenticity in goods and services, and it was this need that dr

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Negative / Null Result ReportOpen accessComputer Science

Prediction of breast cancer survivability using ensemble algorithms

Vincent Adegoke, Daqing Chen, Ebad Banissi et al. · 2017

In this paper, several ensemble cancer survivability predictive models are presented and tested based on three variants of AdaBoost algorithm. In the models we used Random Forest, Radial Basis Function Network and Neural Network algorithms…

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Negative / Null Result ReportComputer Science

Significant Association Rule Mining with High Associability

Subrata Datta, Kalyani Mali · 2021

Traditional support-confidence framework based association rule mining approaches often generate huge number of rules including the insignificant ones. These insignificant association rules are useless in knowledge discovery. One of the…

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Negative / Null Result ReportOpen accessComputer Science

Augmenting Immersive Telepresence Experience with a Virtual Body

Nikunj Arora, Markku Suomalainen, Matti Pouke et al. · 2022 · IEEE Transactions on Visualization and Computer Graphics

We propose augmenting immersive telepresence by adding a virtual body, representing the user's own arm motions, as realized through a head-mounted display and a 360-degree camera. Previous research has shown the effectiveness of having a virtual body in simulated environments; however, research on whether seeing one's own virtual arms increases presence or preference for the user in an immersive telepresence setup is limited. We conducted a study where a host introduced a research lab while participants wore a head-mounted display which allowed them to be telepresent at the host's physical loc

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