Government
Multi-Modal Framing Analysis of News
Arora, Arnav, Yadav, Srishti, Antoniak, Maria, Belongie, Serge, Augenstein, Isabelle
Automated frame analysis of political communication is a popular task in computational social science that is used to study how authors select aspects of a topic to frame its reception. So far, such studies have been narrow, in that they use a fixed set of pre-defined frames and focus only on the text, ignoring the visual contexts in which those texts appear. Especially for framing in the news, this leaves out valuable information about editorial choices, which include not just the written article but also accompanying photographs. To overcome such limitations, we present a method for conducting multi-modal, multi-label framing analysis at scale using large (vision-)language models. Grounding our work in framing theory, we extract latent meaning embedded in images used to convey a certain point and contrast that to the text by comparing the respective frames used. We also identify highly partisan framing of topics with issue-specific frame analysis found in prior qualitative work. We demonstrate a method for doing scalable integrative framing analysis of both text and image in news, providing a more complete picture for understanding media bias.
Optimal Invariant Bases for Atomistic Machine Learning
Allen, Alice E. A., Shinkle, Emily, Bujack, Roxana, Lubbers, Nicholas
The representation of atomic configurations for machine learning models has led to the development of numerous descriptors, often to describe the local environment of atoms. However, many of these representations are incomplete and/or functionally dependent. Incomplete descriptor sets are unable to represent all meaningful changes in the atomic environment. Complete constructions of atomic environment descriptors, on the other hand, often suffer from a high degree of functional dependence, where some descriptors can be written as functions of the others. These redundant descriptors do not provide additional power to discriminate between different atomic environments and increase the computational burden. By employing techniques from the pattern recognition literature to existing atomistic representations, we remove descriptors that are functions of other descriptors to produce the smallest possible set that satisfies completeness. We apply this in two ways: first we refine an existing description, the Atomistic Cluster Expansion. We show that this yields a more efficient subset of descriptors. Second, we augment an incomplete construction based on a scalar neural network, yielding a new message-passing network architecture that can recognize up to 5-body patterns in each neuron by taking advantage of an optimal set of Cartesian tensor invariants. This architecture shows strong accuracy on state-of-the-art benchmarks while retaining low computational cost. Our results not only yield improved models, but point the way to classes of invariant bases that minimize cost while maximizing expressivity for a host of applications.
Elon Musk Lost His Big Bet
Last night, X's "For You" algorithm offered me up what felt like a dispatch from an alternate universe. It was a post from Elon Musk, originally published hours earlier. "This is the first time humans have been in orbit around the poles of the Earth!" he wrote. Underneath his post was a video shared by SpaceX--footage of craggy ice caps, taken by the company's Dragon spacecraft during a private mission. Taken on its own, the video is genuinely captivating.
Wikipedia is struggling with voracious AI bot crawlers
Wikimedia has seen a 50 percent increase in bandwidth used for downloading multimedia content since January 2024, the foundation said in an update. But it's not because human readers have suddenly developed a voracious appetite for consuming Wikipedia articles and for watching videos or downloading files from Wikimedia Commons. No, the spike in usage came from AI crawlers, or automated programs scraping Wikimedia's openly licensed images, videos, articles and other files to train generative artificial intelligence models. This sudden increase in traffic from bots could slow down access to Wikimedia's pages and assets, especially during high-interest events. When Jimmy Carter died in December, for instance, people's heightened interest in the video of his presidential debate with Ronald Reagan caused slow page load times for some users.
An Investigation into the Causal Mechanism of Political Opinion Dynamics: A Model of Hierarchical Coarse-Graining with Community-Bounded Social Influence
Widler, Valeria, Kaminska, Barbara, Martins, Andre C. R., Puga-Gonzalez, Ivan
The increasing polarization in democratic societies is an emergent outcome of political opinion dynamics. Yet, the fundamental mechanisms behind the formation of political opinions, from individual beliefs to collective consensus, remain unknown. Understanding that a causal mechanism must account for both bottom-up and top-down influences, we conceptualize political opinion dynamics as hierarchical coarse-graining, where microscale opinions integrate into a macro-scale state variable. Using the CODA (Continuous Opinions Discrete Actions) model, we simulate Bayesian opinion updating, social identity-based information integration, and migration between social identity groups to represent higher-level connectivity. This results in coarse-graining across micro, meso, and macro levels. Our findings show that higher-level connectivity shapes information integration, yielding three regimes: independent (disconnected, local convergence), parallel (fast, global convergence), and iterative (slow, stepwise convergence). In the iterative regime, low connectivity fosters transient diversity, indicating an informed consensus. In all regimes, time-scale separation leads to downward causation, where agents converge on the aggregate majority choice, driving consensus. Critically, any degree of coherent higher-level information integration can overcome misalignment via global downward causation. The results highlight how emergent properties of the causal mechanism, such as downward causation, are essential for consensus and may inform more precise investigations into polarized political discourse.
EEG-EyeTrack: A Benchmark for Time Series and Functional Data Analysis with Open Challenges and Baselines
Afonso, Tiago Vasconcelos, Heinrichs, Florian
A new benchmark dataset for functional data analysis (FDA) is presented, focusing on the reconstruction of eye movements from EEG data. The contribution is twofold: first, open challenges and evaluation metrics tailored to FDA applications are proposed. Second, functional neural networks are used to establish baseline results for the primary regression task of reconstructing eye movements from EEG signals. Baseline results are reported for the new dataset, based on consumer-grade hardware, and the EEGEyeNet dataset, based on research-grade hardware.
UK needs to relax AI laws or risk transatlantic ties, thinktank warns
To enforce a strict licensing model, the UK would also need to restrict access to models that have been trained on such content, which could include US-owned AI systems. With the Trump administration signalling it will not pursue strict AI regulations and China pursuing AI growth at "breakneck speed", the UK could weaken its economic and national security interests by lagging in the AI race, said TBI. "If the UK imposes laws that are too strict, it risks falling behind in the AI-driven economy and weakening its capacity to protect national security interests," said TBI. The report said arguing that commercial AI models cannot be trained on content from the open web was close to saying knowledge workers โ a broad category of professionals ranging from lawyers to researchers โ cannot profit from insights they get when reading the same content. Rather than fighting to uphold outdated regulations, said TBI, rights holders and policymakers should help build a future where creativity is valued alongside AI innovation. Fernando Garibay, a record producer who has worked with artists including Lady Gaga and U2, said history has been dotted with "end-of-time claims" related to technological breakthroughs, from the printing press to music streaming.
How Tesla became a battleground for political protest
Over the weekend, protesters gathered at Tesla showrooms in hundreds of cities across the world to demonstrate against Elon Musk laying waste to the US government in alliance with Donald Trump. One sign in Manhattan read: "Burn a Tesla, save democracy." Protesters are using the commercial democracy of consumer products to influence US political democracy. In New York City, several hundred anti-Tesla protesters gathered outside the EV company's Manhattan showroom on Saturday. Sophie Shepherd, 23, an organizer with Planet Over Profit, explained that the rally was not about protesting electric cars.
Yuval Noah Harari: 'How Do We Share the Planet With This New Superintelligence?'
Israeli historian and philosopher Yuval Noah Harari's book Sapiens became an international bestseller by presenting a view of history driven by the fictions created by mankind. His later work Homo Deus then depicted the a future for mankind brought about by the emergence of superintelligence. His latest book, Nexus: A Brief History of Information Networks From the Stone Age to AI, is a warning against the unparalleled threat of AI. A rising trend of techno-fascism driven by populism and artificial intelligence has been visible since the US presidential election in November. Nexus, which was published just a few months earlier, is a timely explainer of the potential consequences of AI on democracy and totalitarianism.
Science Autonomy using Machine Learning for Astrobiology
Da Poian, Victoria, Theiling, Bethany, Lyness, Eric, Burtt, David, Azari, Abigail R., Pasterski, Joey, Chou, Luoth, Trainer, Melissa, Danell, Ryan, Kaplan, Desmond, Li, Xiang, Clough, Lily, McKinney, Brett, Mandrake, Lukas, Diamond, Bill, Freissinet, Caroline
AI and ML enable rapid processing of large datasets, and offer advanced feature extraction and pattern recognition capabilities that deliver meaningful insights, enhancing human analysts' ability to identify correlations within complex, multi - variable datasets. This is especially needed for astrobiology, where m odels must distinguish complex biotic patterns fro m intricate abiotic backgrounds. As data volume outpaces the capacity for timely data analysis, AI and ML become essential for data processing. They could also prove invaluable for the complex data analysis that will accompany flight instruments ' advancements. ML has been widely applied in image processing of large datasets in astrophysics and Earth observation ( e.g., crater identification [2 - 4], sample targeting [5]). Similar techniques that share methodology but are improved for onboard computational rest rictions could be leveraged for astrobiology missions to identify key features [6].