Kalamazoo
Learning Optimal Predictive Checklists
Checklists are simple decision aids that are often used to promote safety and reliability in clinical applications. In this paper, we present a method to learn checklists for clinical decision support. We represent predictive checklists as discrete linear classifiers with binary features and unit weights.
- North America > United States > California > Los Angeles County > Los Angeles (0.14)
- North America > United States > Massachusetts > Middlesex County > Cambridge (0.04)
- North America > United States > Hawaii (0.04)
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- North America > United States > California > Los Angeles County > Los Angeles (0.14)
- North America > United States > New York (0.04)
- North America > United States > Massachusetts > Middlesex County > Cambridge (0.04)
- (7 more...)
- Health & Medicine > Therapeutic Area > Psychiatry/Psychology (1.00)
- Government (0.93)
Enhancing Credit Default Prediction Using Boruta Feature Selection and DBSCAN Algorithm with Different Resampling Techniques
Ampomah, Obu-Amoah, Agyemang, Edmund, Acheampong, Kofi, Agyekum, Louis
This study examines credit default prediction by comparing three techniques, namely SMOTE, SMOTE-Tomek, and ADASYN, that are commonly used to address the class imbalance problem in credit default situations. Recognizing that credit default datasets are typically skewed, with defaulters comprising a much smaller proportion than non-defaulters, we began our analysis by evaluating machine learning (ML) models on the imbalanced data without any resampling to establish baseline performance. These baseline results provide a reference point for understanding the impact of subsequent balancing methods. In addition to traditional classifiers such as Naive Bayes and K-Nearest Neighbors (KNN), our study also explores the suitability of advanced ensemble boosting algorithms, including Extreme Gradient Boosting (XGBoost), AdaBoost, Gradient Boosting Machines (GBM), and Light GBM for credit default prediction using Boruta feature selection and DBSCAN-based outlier detection, both before and after resampling. A real-world credit default data set sourced from the University of Cleveland ML Repository was used to build ML classifiers, and their performances were tested. The criteria chosen to measure model performance are the area under the receiver operating characteristic curve (ROC-AUC), area under the precision-recall curve (PR-AUC), G-mean, and F1-scores. The results from this empirical study indicate that the Boruta+DBSCAN+SMOTE-Tomek+GBM classifier outperformed the other ML models (F1-score: 82.56%, G-mean: 82.98%, ROC-AUC: 90.90%, PR-AUC: 91.85%) in a credit default context. The findings establish a foundation for future progress in creating more resilient and adaptive credit default systems, which will be essential as credit-based transactions continue to rise worldwide.
- North America > United States > Michigan > Kalamazoo County > Kalamazoo (0.04)
- North America > United States > Texas > Hidalgo County > Edinburg (0.04)
- North America > United States > Louisiana > Orleans Parish > New Orleans (0.04)
- (2 more...)
- Banking & Finance > Credit (0.70)
- Information Technology (0.68)
- Banking & Finance > Loans (0.67)
- Information Technology > Artificial Intelligence > Machine Learning > Statistical Learning (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Performance Analysis > Accuracy (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Ensemble Learning (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Learning Graphical Models > Directed Networks > Bayesian Learning (0.69)
Construction of generalized samplets in Banach spaces
Balazs, Peter, Multerer, Michael
Recently, samplets have been introduced as localized discrete signed measures which are tailored to an underlying data set. Samplets exhibit vanishing moments, i.e., their measure integrals vanish for all polynomials up to a certain degree, which allows for feature detection and data compression. In the present article, we extend the different construction steps of samplets to functionals in Banach spaces more general than point evaluations. To obtain stable representations, we assume that these functionals form frames with square-summable coefficients or even Riesz bases with square-summable coefficients. In either case, the corresponding analysis operator is injective and we obtain samplet bases with the desired properties by means of constructing an isometry of the analysis operator's image. Making the assumption that the dual of the Banach space under consideration is imbedded into the space of compactly supported distributions, the multilevel hierarchy for the generalized samplet construction is obtained by spectral clustering of a similarity graph for the functionals' supports. Based on this multilevel hierarchy, generalized samplets exhibit vanishing moments with respect to a given set of primitives within the Banach space. We derive an abstract localization result for the generalized samplet coefficients with respect to the samplets' support sizes and the approximability of the Banach space elements by the chosen primitives. Finally, we present three examples showcasing the generalized samplet framework.
- North America > United States > New York (0.04)
- North America > United States > California > San Diego County > San Diego (0.04)
- North America > United States > Michigan > Kalamazoo County > Kalamazoo (0.04)
- (2 more...)
Reimagining partial thickness keratoplasty: An eye mountable robot for autonomous big bubble needle insertion
Wang, Y., Opfermann, J. D., Yu, J., Yi, H., Kaluna, J., Biswas, R., Zuo, R., Gensheimer, W., Krieger, A., Kang, J. U.
Autonomous surgical robots have demonstrated significant potential to standardize surgical outcomes, driving innovations that enhance safety and consistency regardless of individual surgeon experience. Deep anterior lamellar keratoplasty (DALK), a partial thickness corneal transplant surgery aimed at replacing the anterior part of cornea above Descemet membrane (DM), would greatly benefit from an autonomous surgical approach as it highly relies on surgeon skill with high perforation rates. In this study, we proposed a novel autonomous surgical robotic system (AUTO-DALK) based on a customized neural network capable of precise needle control and consistent big bubble demarcation on cadaver and live rabbit models. We demonstrate the feasibility of an AI-based image-guided vertical drilling approach for big bubble generation, in contrast to the conventional horizontal needle approach. Our system integrates an optical coherence tomography (OCT) fiber optic distal sensor into the eye-mountable micro robotic system, which automatically segments OCT M-mode depth signals to identify corneal layers using a custom deep learning algorithm. It enables the robot to autonomously guide the needle to targeted tissue layers via a depth-controlled feedback loop. We compared autonomous needle insertion performance and resulting pneumo-dissection using AUTO-DALK against 1) freehand insertion, 2) OCT sensor guided manual insertion, and 3) teleoperated robotic insertion, reporting significant improvements in insertion depth, pneumo-dissection depth, task completion time, and big bubble formation. Ex vivo and in vivo results indicate that the AI-driven, AUTO-DALK system, is a promising solution to standardize pneumo-dissection outcomes for partial thickness keratoplasty.
- North America > United States > Maryland > Baltimore (0.04)
- Europe > Germany (0.04)
- Asia > Middle East > Lebanon (0.04)
- (7 more...)
- Research Report > New Finding (1.00)
- Research Report > Experimental Study (1.00)
- Health & Medicine > Therapeutic Area > Ophthalmology/Optometry (1.00)
- Health & Medicine > Surgery (1.00)
- Health & Medicine > Diagnostic Medicine (0.67)
- Energy (0.67)
AI-powered bird feeder takes candid pics, identifies our feathered friends as they snack
Birda co-founders John and Natalie White shared details of their social birding network with Fox News Digital. An AI-powered bird feeder called Bird Buddy doesn't only feed the birds -- it takes candid photos and identifies the species of each bird as it lands for a snack. Bird Buddy CEO Franci Zidar, whose company is based in Kalamazoo, Michigan, told Fox News Digital that the product uses artificial intelligence technology to take clear and "interesting" snapshots of the birds that come to feed. WHAT IS ARTIFICIAL INTELLIGENCE (AI)? The smart bird feeder then detects the type of bird species -- and sends a notification with the photo and bird info to its owner's mobile device.
- North America > United States > Michigan > Kalamazoo County > Kalamazoo (0.25)
- South America > Chile (0.05)
- North America > United States > Hawaii (0.05)
- (3 more...)
Leveraging Explainable AI to Analyze Researchers' Aspect-Based Sentiment about ChatGPT
Lakhanpal, Shilpa, Gupta, Ajay, Agrawal, Rajeev
The groundbreaking invention of ChatGPT has triggered enormous discussion among users across all fields and domains. Among celebration around its various advantages, questions have been raised with regards to its correctness and ethics of its use. Efforts are already underway towards capturing user sentiments around it. But it begs the question as to how the research community is analyzing ChatGPT with regards to various aspects of its usage. It is this sentiment of the researchers that we analyze in our work. Since Aspect-Based Sentiment Analysis has usually only been applied on a few datasets, it gives limited success and that too only on short text data. We propose a methodology that uses Explainable AI to facilitate such analysis on research data. Our technique presents valuable insights into extending the state of the art of Aspect-Based Sentiment Analysis on newer datasets, where such analysis is not hampered by the length of the text data.
- North America > United States > Minnesota > Hennepin County > Minneapolis (0.14)
- North America > United States > California > Los Angeles County > Long Beach (0.04)
- North America > United States > Michigan > Kalamazoo County > Kalamazoo (0.04)
- (6 more...)
- Education (1.00)
- Information Technology > Services (0.46)
- Information Technology > Artificial Intelligence > Natural Language > Large Language Model (1.00)
- Information Technology > Artificial Intelligence > Natural Language > Information Extraction (1.00)
- Information Technology > Artificial Intelligence > Natural Language > Chatbot (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Neural Networks > Deep Learning (1.00)
New intelligent defense systems to reduce the risks of Selfish Mining and Double-Spending attacks using Learning Automata
Ghoreishi, Seyed Ardalan, Meybodi, Mohammad Reza
In this paper, we address the critical challenges of double-spending and selfish mining attacks in blockchain-based digital currencies. Double-spending is a problem where the same tender is spent multiple times during a digital currency transaction, while selfish mining is an intentional alteration of a blockchain to increase rewards to one miner or a group of miners. We introduce a new attack that combines both these attacks and propose a machine learning-based solution to mitigate the risks associated with them. Specifically, we use the learning automaton, a powerful online learning method, to develop two models, namely the SDTLA and WVBM, which can effectively defend against selfish mining attacks. Our experimental results show that the SDTLA method increases the profitability threshold of selfish mining up to 47$\%$, while the WVBM method performs even better and is very close to the ideal situation where each miner's revenue is proportional to their shared hash processing power. Additionally, we demonstrate that both methods can effectively reduce the risks of double-spending by tuning the $Z$ Parameter. Our findings highlight the potential of SDTLA and WVBM as promising solutions for enhancing the security and efficiency of blockchain networks.
- North America > United States > California > San Francisco County > San Francisco (0.14)
- Asia > Middle East > Iran > Tehran Province > Tehran (0.04)
- North America > United States > Oklahoma > Cleveland County > Norman (0.04)
- (5 more...)
- Information Technology > Security & Privacy (1.00)
- Government > Military (0.64)
- Education > Educational Setting > Online (0.34)
- Information Technology > e-Commerce > Financial Technology (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Reinforcement Learning (0.50)
- Information Technology > Artificial Intelligence > Machine Learning > Computational Learning Theory > Learning Automata (0.42)
- Information Technology > Enterprise Applications > Human Resources > Learning Management (0.34)
Motion Comfort Optimization for Autonomous Vehicles: Concepts, Methods, and Techniques
Aledhari, Mohammed, Rahouti, Mohamed, Qadir, Junaid, Qolomany, Basheer, Guizani, Mohsen, Al-Fuqaha, Ala
This article outlines the architecture of autonomous driving and related complementary frameworks from the perspective of human comfort. The technical elements for measuring Autonomous Vehicle (AV) user comfort and psychoanalysis are listed here. At the same time, this article introduces the technology related to the structure of automatic driving and the reaction time of automatic driving. We also discuss the technical details related to the automatic driving comfort system, the response time of the AV driver, the comfort level of the AV, motion sickness, and related optimization technologies. The function of the sensor is affected by various factors. Since the sensor of automatic driving mainly senses the environment around a vehicle, including "the weather" which introduces the challenges and limitations of second-hand sensors in autonomous vehicles under different weather conditions. The comfort and safety of autonomous driving are also factors that affect the development of autonomous driving technologies. This article further analyzes the impact of autonomous driving on the user's physical and psychological states and how the comfort factors of autonomous vehicles affect the automotive market. Also, part of our focus is on the benefits and shortcomings of autonomous driving. The goal is to present an exhaustive overview of the most relevant technical matters to help researchers and application developers comprehend the different comfort factors and systems of autonomous driving. Finally, we provide detailed automated driving comfort use cases to illustrate the comfort-related issues of autonomous driving. Then, we provide implications and insights for the future of autonomous driving.
- Asia > Middle East > UAE > Abu Dhabi Emirate > Abu Dhabi (0.14)
- North America > United States > Missouri > Jackson County > Kansas City (0.14)
- North America > United States > Texas > Denton County > Denton (0.14)
- (17 more...)
- Transportation > Ground > Road (1.00)
- Information Technology > Robotics & Automation (1.00)
- Automobiles & Trucks (1.00)
Topic Modeling Based on Two-Step Flow Theory: Application to Tweets about Bitcoin
Mulahuwaish, Aos, Loucks, Matthew, Qolomany, Basheer, Al-Fuqaha, Ala
Digital cryptocurrencies such as Bitcoin have exploded in recent years in both popularity and value. By their novelty, cryptocurrencies tend to be both volatile and highly speculative. The capricious nature of these coins is helped facilitated by social media networks such as Twitter. However, not everyone's opinion matters equally, with most posts garnering little to no attention. Additionally, the majority of tweets are retweeted from popular posts. We must determine whose opinion matters and the difference between influential and non-influential users. This study separates these two groups and analyzes the differences between them. It uses Hypertext-induced Topic Selection (HITS) algorithm, which segregates the dataset based on influence. Topic modeling is then employed to uncover differences in each group's speech types and what group may best represent the entire community. We found differences in language and interest between these two groups regarding Bitcoin and that the opinion leaders of Twitter are not aligned with the majority of users. There were 2559 opinion leaders (0.72% of users) who accounted for 80% of the authority and the majority (99.28%) users for the remaining 20% out of a total of 355,139 users.
- North America > United States > Missouri > Jackson County > Kansas City (0.14)
- North America > Canada > Ontario > Hamilton (0.14)
- North America > United States > Nebraska > Buffalo County > Kearney (0.04)
- (11 more...)
- Information Technology > Services (1.00)
- Banking & Finance > Trading (1.00)