Goto

Collaborating Authors

 photography


Meet your descendants – and your future self! A trip to Venice film festival's extended reality island

The Guardian

In the largest cinema at the Venice film festival, guests gather for the premiere of Frankenstein, Guillermo del Toro's lavish account of a man who dared to play God and created a monster. When the young scientist reanimates a dead body for his colleagues, some see it as a trick while others are outraged. "It's an abomination, an obscenity," shouts one hide-bound old timer, and his alarm is partly justified. Every technological breakthrough opens Pandora's box. You don't know what's going to crawl out or where it will then choose to go.


StealthRank: LLM Ranking Manipulation via Stealthy Prompt Optimization

Tang, Yiming, Fan, Yi, Yu, Chenxiao, Yang, Tiankai, Zhao, Yue, Hu, Xiyang

arXiv.org Machine Learning

The integration of large language models (LLMs) into information retrieval systems introduces new attack surfaces, particularly for adversarial ranking manipulations. We present StealthRank, a novel adversarial ranking attack that manipulates LLM-driven product recommendation systems while maintaining textual fluency and stealth. Unlike existing methods that often introduce detectable anomalies, StealthRank employs an energy-based optimization framework combined with Langevin dynamics to generate StealthRank Prompts (SRPs)-adversarial text sequences embedded within product descriptions that subtly yet effectively influence LLM ranking mechanisms. We evaluate StealthRank across multiple LLMs, demonstrating its ability to covertly boost the ranking of target products while avoiding explicit manipulation traces that can be easily detected. Our results show that StealthRank consistently outperforms state-of-the-art adversarial ranking baselines in both effectiveness and stealth, highlighting critical vulnerabilities in LLM-driven recommendation systems.


User Profile with Large Language Models: Construction, Updating, and Benchmarking

Prottasha, Nusrat Jahan, Kowsher, Md, Raman, Hafijur, Anny, Israt Jahan, Bhat, Prakash, Garibay, Ivan, Garibay, Ozlem

arXiv.org Artificial Intelligence

User profile modeling plays a key role in personalized systems, as it requires building accurate profiles and updating them with new information. In this paper, we present two high-quality open-source user profile datasets: one for profile construction and another for profile updating. These datasets offer a strong basis for evaluating user profile modeling techniques in dynamic settings. We also show a methodology that uses large language models (LLMs) to tackle both profile construction and updating. Our method uses a probabilistic framework to predict user profiles from input text, allowing for precise and context-aware profile generation. Our experiments demonstrate that models like Mistral-7b and Llama2-7b perform strongly in both tasks. LLMs improve the precision and recall of the generated profiles, and high evaluation scores confirm the effectiveness of our approach.


In 2024, the camera of the year was a drone

Engadget

Aside from the global shutter on Sony's A9 III and some cool mirrorless options -- the Fujifilm X100 VI, Panasonic S9 and Canon EOS R5 II come to mind -- 2024 was a dull year for cameras full of small tweaks and minor improvements. For 200, aerial photography is now finally in reach for just about anyone. DJI released its product lineup this year with a sword of Damocles hanging over its head: the US government was planning to ban sales of the company's products by the end of 2024 over potential fears of spying. It was only at the last minute that DJI gained a reprieve, thanks in large part to lobbying by public safety groups that heavily rely on its drones. It now has until the end of 2025 to prove that its products don't pose a risk.


Google's generative AI video model is available in private preview

Engadget

Google has begun rolling out private access to its Veo and Imagen 3 generative AI models. Starting today, customers of the company's Vertex AI Google Cloud package can begin using Veo to generate videos from text prompts and images. Then, as of next week, Google will make Imagen 3, its latest text-to-image framework, available to those same users. To that point, OpenAI's Sora model is still only available to select artists, academics and researchers -- though that could change quickly with the company teasing 12 days of product demos starting December 5. Of Veo, Google says the model creates 1080p footage "that's consistent and coherent" and can run "beyond a minute." The tool is also capable of working with both text prompts and images.


Is Virginia Tracy the First Great American Film Critic?

The New Yorker

Indeed, many of Tracy's pieces of film criticism aren't reviews--they're movie-centered essays, in which she develops in detail her probingly comprehensive view of the art form over all. She may even be the cinema's first major theoretician. Her body of work cries out for a complete reissue in book form. Tracy, born in 1874, was the daughter of actors, and she began her career on the stage, in the eighteen-nineties. In 1909, she published a book of short stories about the lives of theatre people, "Merely Players." In her love of movies, she was fighting an uphill battle against the intellectual orthodoxies of the time, which revered theatre as a serious art form and disparaged movies as merely popular entertainment.


How I Fell Back in Love with iPhone Photography

The New Yorker

There's a Japanese word, komorebi, that describes beams of light and dappled shadows that result when the sun shines through trees. When I take my dog on walks around my leafy neighborhood in Washington, D.C., komorebi is what most often catches my eye, especially in this autumnal moment when dense, green summer foliage is starting to thin and turn golden. As the sun sets and the shadows grow long on the edge of a precipitous valley near my apartment, the foliage creates fluttering patterns of warm and cool colors. I try to photograph these apparitions with my iPhone camera, but I'm always disappointed in the results: the device's automated image processing treats contrast as a problem to be solved, aggressively darkening the highlights and lightening up the shadows to achieve a bland flatness. Little of the lambent atmosphere I see in real life survives in the image.


The best drones for kids in 2024

Popular Science

We may earn revenue from the products available on this page and participate in affiliate programs. As a former elementary school teacher, I'm on board with any plaything that not only entertains but also increases skills, such as hand-eye coordination, or imparts knowledge on a potentially difficult subject like, say, physics. Our picks include a well-rounded quadcopter with a camera that's capable of tricks (our best overall, the DEERC D20 Mini Drone for Kids) all the way to a tiny but fun cameraless beginner's copter to get the little ones up to speed with flying at speed at a price. Here, then, are our picks for the best drones for kids of all ages … and a few adults, too. When choosing these drones, we considered various factors.


What Is Privacy For?

The New Yorker

I belong to the last generation of Americans who grew up without the Internet in our pocket. We went online, but also, miraculously, we went offline. The clunky things we called computers didn't come with us. There were disadvantages, to be sure. Factual disputes could not be resolved by consulting Wikipedia on our phones; people remained wrong for hours, even days.


Why A.I. Isn't Going to Make Art

The New Yorker

In 1953, Roald Dahl published "The Great Automatic Grammatizator," a short story about an electrical engineer who secretly desires to be a writer. One day, after completing construction of the world's fastest calculating machine, the engineer realizes that "English grammar is governed by rules that are almost mathematical in their strictness." He constructs a fiction-writing machine that can produce a five-thousand-word short story in thirty seconds; a novel takes fifteen minutes and requires the operator to manipulate handles and foot pedals, as if he were driving a car or playing an organ, to regulate the levels of humor and pathos. The resulting novels are so popular that, within a year, half the fiction published in English is a product of the engineer's invention. Is there anything about art that makes us think it can't be created by pushing a button, as in Dahl's imagination?