Government
Air raid sirens in Kyiv as Russia launches fresh drone attacks
Air raid sirens have blared across the Ukrainian capital, Kyiv, as Russia kept pounding the city for a second night in a row. The drone attacks early on Monday targeted critical infrastructure in Kyiv and the surrounding region, according to Ukrainian officials, and have wounded at least one person. "It is loud in the region and in the capital: night drone attacks," said Oleksiy Kuleba, the governor of the Kyiv region. "Russians launched several waves of [Iranian-made] Shahed drones. Targeting critical infrastructure facilities," he wrote on the Telegram messaging application.
Archaeological Sites Detection with a Human-AI Collaboration Workflow
Casini, Luca, Orrù, Valentina, Montanucci, Andrea, Marchetti, Nicolò, Roccetti, Marco
This paper illustrates the results obtained by using pre-trained semantic segmentation deep learning models for the detection of archaeological sites within the Mesopotamian floodplains environment. The models were fine-tuned using openly available satellite imagery and vector shapes coming from a large corpus of annotations (i.e., surveyed sites). A randomized test showed that the best model reaches a detection accuracy in the neighborhood of 80%. Integrating domain expertise was crucial to define how to build the dataset and how to evaluate the predictions, since defining if a proposed mask counts as a prediction is very subjective. Furthermore, even an inaccurate prediction can be useful when put into context and interpreted by a trained archaeologist. Coming from these considerations we close the paper with a vision for a Human-AI collaboration workflow. Starting with an annotated dataset that is refined by the human expert we obtain a model whose predictions can either be combined to create a heatmap, to be overlaid on satellite and/or aerial imagery, or alternatively can be vectorized to make further analysis in a GIS software easier and automatic. In turn, the archaeologists can analyze the predictions, organize their onsite surveys, and refine the dataset with new, corrected, annotation
Russia-Ukraine war: Modeling and Clustering the Sentiments Trends of Various Countries
Vahdat-Nejad, Hamed, Akbari, Mohammad Ghasem, Salmani, Fatemeh, Azizi, Faezeh, Nili-Sani, Hamid-Reza
With Twitter's growth and popularity, a huge number of views are shared by users on various topics, making this platform a valuable information source on various political, social, and economic issues. This paper investigates English tweets on the Russia-Ukraine war to analyze trends reflecting users' opinions and sentiments regarding the conflict. The tweets' positive and negative sentiments are analyzed using a BERT-based model, and the time series associated with the frequency of positive and negative tweets for various countries is calculated. Then, we propose a method based on the neighborhood average for modeling and clustering the time series of countries. The clustering results provide valuable insight into public opinion regarding this conflict. Among other things, we can mention the similar thoughts of users from the United States, Canada, the United Kingdom, and most Western European countries versus the shared views of Eastern European, Scandinavian, Asian, and South American nations toward the conflict.
Human-centered XAI for Burn Depth Characterization
Jacobson, Maxwell J., Arrubla, Daniela Chanci, Tricas, Maria Romeo, Gordillo, Gayle, Xue, Yexiang, Sen, Chandan, Wachs, Juan
Approximately 1.25 million people in the United States are treated each year for burn injuries. Precise burn injury classification is an important aspect of the medical AI field. In this work, we propose an explainable human-in-the-loop framework for improving burn ultrasound classification models. Our framework leverages an explanation system based on the LIME classification explainer to corroborate and integrate a burn expert's knowledge -- suggesting new features and ensuring the validity of the model. Using this framework, we discover that B-mode ultrasound classifiers can be enhanced by supplying textural features. More specifically, we confirm that texture features based on the Gray Level Co-occurance Matrix (GLCM) of ultrasound frames can increase the accuracy of transfer learned burn depth classifiers. We test our hypothesis on real data from porcine subjects. We show improvements in the accuracy of burn depth classification -- from ~88% to ~94% -- once modified according to our framework.
Understanding Political Polarisation using Language Models: A dataset and method
Gode, Samiran, Bare, Supreeth, Raj, Bhiksha, Yoo, Hyungon
Our paper aims to analyze political polarization in US political system using Language Models, and thereby help candidates make an informed decision. The availability of this information will help voters understand their candidates views on the economy, healthcare, education and other social issues. Our main contributions are a dataset extracted from Wikipedia that spans the past 120 years and a Language model based method that helps analyze how polarized a candidate is. Our data is divided into 2 parts, background information and political information about a candidate, since our hypothesis is that the political views of a candidate should be based on reason and be independent of factors such as birthplace, alma mater, etc. We further split this data into 4 phases chronologically, to help understand if and how the polarization amongst candidates changes. This data has been cleaned to remove biases. To understand the polarization we begin by showing results from some classical language models in Word2Vec and Doc2Vec. And then use more powerful techniques like the Longformer, a transformer based encoder, to assimilate more information and find the nearest neighbors of each candidate based on their political view and their background.
Sequence to sequence pretraining for a less-resourced Slovenian language
Ulčar, Matej, Robnik-Šikonja, Marko
Large pretrained language models have recently conquered the area of natural language processing. As an alternative to predominant masked language modelling introduced in BERT, the T5 model has introduced a more general training objective, namely sequence to sequence transformation, which includes masked language model but more naturally fits text generation tasks such as machine translation, summarization, question answering, text simplification, dialogue systems, etc. The monolingual variants of T5 models have been limited to well-resourced languages, while the massively multilingual T5 model supports 101 languages. In contrast, we trained two different sized T5-type sequence to sequence models for morphologically rich Slovene language with much less resources and analyzed their behavior on 11 tasks. Concerning classification tasks, the SloT5 models mostly lag behind the monolingual Slovene SloBERTa model but are useful for the generative tasks.
Bimanual Telemanipulation with Force and Haptic Feedback through an Anthropomorphic Avatar System
Robotic teleoperation is a key technology for a wide variety of applications. It allows sending robots instead of humans in remote, possibly dangerous locations while still using the human brain with its enormous knowledge and creativity, especially for solving unexpected problems. A main challenge in teleoperation consists of providing enough feedback to the human operator for situation awareness and thus create full immersion, as well as offering the operator suitable control interfaces to achieve efficient and robust task fulfillment. We present a bimanual telemanipulation system consisting of an anthropomorphic avatar robot and an operator station providing force and haptic feedback to the human operator. The avatar arms are controlled in Cartesian space with a direct mapping of the operator movements. The measured forces and torques on the avatar side are haptically displayed to the operator. We developed a predictive avatar model for limit avoidance which runs on the operator side, ensuring low latency. The system was successfully evaluated during the ANA Avatar XPRIZE competition semifinals. In addition, we performed in lab experiments and carried out a small user study with mostly untrained operators.
The Rise of AI in Cyber Attacks: Risks and Challenges
Artificial intelligence (AI) has the potential to revolutionize many aspects of our lives, including the way we conduct cyber attacks. While the use of AI for cyber attacks is still in its early stages, it is likely that it will become more prevalent in the near future. There are a number of ways in which AI could be used to enhance the capabilities of hackers and other malicious actors. For example, AI could be used to automate and speed up the process of identifying and exploiting vulnerabilities in computer systems. This could make it easier for hackers to gain access to sensitive information or disrupt critical systems.
Understanding Chatbots part1(Artificial Intelligence)
Abstract: Chatbots, or bots for short, are multi-modal collaborative assistants that can help people complete useful tasks. Usually, when chatbots are referenced in connection with elections, they often draw negative reactions due to the fear of mis-information and hacking. Instead, in this paper, we explore how chatbots may be used to promote voter participation in vulnerable segments of society like senior citizens and first-time voters. In particular, we build a system that amplifies official information while personalizing it to users' unique needs transparently. We discuss its design, build prototypes with frequently asked questions (FAQ) election information for two US states that are low on an ease-of-voting scale, and report on its initial evaluation in a focus group. Our approach can be a win-win for voters, election agencies trying to fulfill their mandate and democracy at large.
Is AI more Republican or Democrat? • AI Blog
The answer to this question may surprise you: AI is more Republican than Democrat. The study found that, when it comes to political values, AI is more closely aligned with the Republican Party than the Democratic Party. Specifically, the study found that AI is more likely to value individual liberty and free markets over government intervention and regulation. Additionally, AI is more likely to support traditional values such as patriotism and religion. Of course, it's important to remember that AI is not a person and cannot vote.