Goto

Collaborating Authors

 Colorado County


How surveillance tech led police to accuse the wrong person

FOX News

A Colorado woman who spoke with Kurt "CyberGuy" Knutsson was wrongly accused of theft after police relied on surveillance technology that misidentified her vehicle.


From Perceptions to Decisions: Wildfire Evacuation Decision Prediction with Behavioral Theory-informed LLMs

arXiv.org Artificial Intelligence

Evacuation decision prediction is critical for efficient and effective wildfire response by helping emergency management anticipate traffic congestion and bottlenecks, allocate resources, and minimize negative impacts. Traditional statistical methods for evacuation decision prediction fail to capture the complex and diverse behavioral logic of different individuals. In this work, for the first time, we introduce FLARE, short for facilitating LLM for advanced reasoning on wildfire evacuation decision prediction, a Large Language Model (LLM)-based framework that integrates behavioral theories and models to streamline the Chain-of-Thought (CoT) reasoning and subsequently integrate with memory-based Reinforcement Learning (RL) module to provide accurate evacuation decision prediction and understanding. Our proposed method addresses the limitations of using existing LLMs for evacuation behavioral predictions, such as limited survey data, mismatching with behavioral theory, conflicting individual preferences, implicit and complex mental states, and intractable mental state-behavior mapping. Experiments on three post-wildfire survey datasets show an average of 20.47% performance improvement over traditional theory-informed behavioral models, with strong cross-event generalizability. Our complete code is publicly available at https://github.com/SusuXu-s-Lab/FLARE


Synthetic Time Series Data Generation for Healthcare Applications: A PCG Case Study

arXiv.org Artificial Intelligence

The generation of high-quality medical time series data is essential for advancing healthcare diagnostics and safeguarding patient privacy. Specifically, synthesizing realistic phonocardiogram (PCG) signals offers significant potential as a cost-effective and efficient tool for cardiac disease pre-screening. Despite its potential, the synthesis of PCG signals for this specific application received limited attention in research. In this study, we employ and compare three state-of-the-art generative models from different categories - WaveNet, DoppelGANger, and DiffWave - to generate high-quality PCG data. We use data from the George B. Moody PhysioNet Challenge 2022. Our methods are evaluated using various metrics widely used in the previous literature in the domain of time series data generation, such as mean absolute error and maximum mean discrepancy. Our results demonstrate that the generated PCG data closely resembles the original datasets, indicating the effectiveness of our generative models in producing realistic synthetic PCG data. In our future work, we plan to incorporate this method into a data augmentation pipeline to synthesize abnormal PCG signals with heart murmurs, in order to address the current scarcity of abnormal data. We hope to improve the robustness and accuracy of diagnostic tools in cardiology, enhancing their effectiveness in detecting heart murmurs.


Learning label-label correlations in Extreme Multi-label Classification via Label Features

arXiv.org Artificial Intelligence

Extreme Multi-label Text Classification (XMC) involves learning a classifier that can assign an input with a subset of most relevant labels from millions of label choices. Recent works in this domain have increasingly focused on a symmetric problem setting where both input instances and label features are short-text in nature. Short-text XMC with label features has found numerous applications in areas such as query-to-ad-phrase matching in search ads, title-based product recommendation, prediction of related searches. In this paper, we propose Gandalf, a novel approach which makes use of a label co-occurrence graph to leverage label features as additional data points to supplement the training distribution. By exploiting the characteristics of the short-text XMC problem, it leverages the label features to construct valid training instances, and uses the label graph for generating the corresponding soft-label targets, hence effectively capturing the label-label correlations. Surprisingly, models trained on these new training instances, although being less than half of the original dataset, can outperform models trained on the original dataset, particularly on the PSP@k metric for tail labels. With this insight, we aim to train existing XMC algorithms on both, the original and new training instances, leading to an average 5% relative improvements for 6 state-of-the-art algorithms across 4 benchmark datasets consisting of up to 1.3M labels. Gandalf can be applied in a plug-and-play manner to various methods and thus forwards the state-of-the-art in the domain, without incurring any additional computational overheads.


On the Promises and Challenges of Multimodal Foundation Models for Geographical, Environmental, Agricultural, and Urban Planning Applications

arXiv.org Artificial Intelligence

The advent of large language models (LLMs) has heightened interest in their potential for multimodal applications that integrate language and vision. This paper explores the capabilities of GPT-4V in the realms of geography, environmental science, agriculture, and urban planning by evaluating its performance across a variety of tasks. Data sources comprise satellite imagery, aerial photos, ground-level images, field images, and public datasets. The model is evaluated on a series of tasks including geo-localization, textual data extraction from maps, remote sensing image classification, visual question answering, crop type identification, disease/pest/weed recognition, chicken behavior analysis, agricultural object counting, urban planning knowledge question answering, and plan generation. The results indicate the potential of GPT-4V in geo-localization, land cover classification, visual question answering, and basic image understanding. However, there are limitations in several tasks requiring fine-grained recognition and precise counting. While zero-shot learning shows promise, performance varies across problem domains and image complexities. The work provides novel insights into GPT-4V's capabilities and limitations for real-world geospatial, environmental, agricultural, and urban planning challenges. Further research should focus on augmenting the model's knowledge and reasoning for specialized domains through expanded training. Overall, the analysis demonstrates foundational multimodal intelligence, highlighting the potential of multimodal foundation models (FMs) to advance interdisciplinary applications at the nexus of computer vision and language.


Small Area Estimation of Case Growths for Timely COVID-19 Outbreak Detection

arXiv.org Machine Learning

The COVID-19 pandemic has exerted a profound impact on the global economy and continues to exact a significant toll on human lives. The COVID-19 case growth rate stands as a key epidemiological parameter to estimate and monitor for effective detection and containment of the resurgence of outbreaks. A fundamental challenge in growth rate estimation and hence outbreak detection is balancing the accuracy-speed tradeoff, where accuracy typically degrades with shorter fitting windows. In this paper, we develop a machine learning (ML) algorithm, which we call Transfer Learning Generalized Random Forest (TLGRF), that balances this accuracy-speed tradeoff. Specifically, we estimate the instantaneous COVID-19 exponential growth rate for each U.S. county by using TLGRF that chooses an adaptive fitting window size based on relevant day-level and county-level features affecting the disease spread. Through transfer learning, TLGRF can accurately estimate case growth rates for counties with small sample sizes. Out-of-sample prediction analysis shows that TLGRF outperforms established growth rate estimation methods. Furthermore, we conducted a case study based on outbreak case data from the state of Colorado and showed that the timely detection of outbreaks could have been improved by up to 224% using TLGRF when compared to the decisions made by Colorado's Department of Health and Environment (CDPHE). To facilitate implementation, we have developed a publicly available outbreak detection tool for timely detection of COVID-19 outbreaks in each U.S. county, which received substantial attention from policymakers.


Fox News Politics: Sandbagged

FOX News

DOCTOR IN THE HOUSE: Former White House doctor and current Rep. Ronny Jackson said Biden's'lack of physical ability and his physical decline' highlight his'cognitive decline'โ€ฆ Read more: Former doctor for Trump, Obama slams White House's'malpractice' in allowing Biden to seek re-election TOPSHOT - US President Joe Biden is helped up after falling during the graduation ceremony at the United States Air Force Academy, just north of Colorado Springs in El Paso County, Colorado, on June 1, 2023. FLASHBACK: Many recalled how Biden during the 2020 campaign poked fun at former President Trump's apparent tottering down a rampโ€ฆ Read more: Biden, who just fell on stage, once mocked Trump for carefully walking down ramp at commencement THE TRUTH IS OUT THERE: The US government has vessels and parts of craft of "exotic origin" (potentially not human-made), according to a recently-revealed whistleblowerโ€ฆ Read more: Military whistleblower goes public with claims US has secret UFO retrieval ...


Investigation underway after AI tool may have misinterpreted a child's disability as parental neglect

FOX News

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. For the two weeks that the Hackneys' baby girl lay in a Pittsburgh hospital bed weak from dehydration, her parents rarely left her side, sometimes sleeping on the fold-out sofa in the room. They stayed with their daughter around the clock when she was moved to a rehab center to regain her strength. Finally, the 8-month-old stopped batting away her bottles and started putting on weight again. "She was doing well and we started to ask when can she go home," Lauren Hackney said.


Fulltime SAP openings in Los Angeles on August 14, 2022

#artificialintelligence

Role requiring'No experience data provided' months of experience in Los Angeles Accentures SAP practice in the West, and we bring the New to life using design thinking, agile development methodologies, and the latest smart tech for SAP when it comes to automation and AI. We help out clients apply intelligence to set their business apart and make them more proactive, predictive and productive the power of the intelligent enterprise. We have also announced our partnership with SAP to develop SAPs new Responsible Production and Design solution, which will help companies consume fewer resources and build sustainability into their design processes. We believe sustainability is going to be the next digital, says Julie Sweet. Im hopeful that by 2025, well be able to say every business is a sustainable business.


Google's Machine Learning Is Making You More Effective In 2020

#artificialintelligence

The collection of web-based software that Google offers to businesses and consumers is officially known as G Suite. Most people are familiar with Gmail and Google Docs, but quite a few do not realize that they offer a whole range of productivity and collaboration tools via your computer or mobile device. HONG KONG, HONG KONG - November 27: A woman using an Macbook Pro as she uses Google G Suite on ... [ ] November 27, 2017 in Hong Kong, Hong Kong. I have been working on another post about consumer-level uses of artificial intelligence (AI), not the media-hyped creepiness, but the practical, useful ways that AI is helping us do more and be more. Google started me thinking about this as I have watched it add various "smart" functions (think AI) to email as well as increasing ways to help me complete or enhance a document, spreadsheet, or presentation with the Explore function.