Knowledge hallucination have raised widespread concerns for the security and reliability of deployed LLMs. Previous efforts in detecting hallucinations have been employed at logit-level uncertainty estimation or language-level self-consistency evaluation, where the semantic information is inevitably lost during the tokendecoding procedure. Thus, we propose to explore the dense semantic information retained within LLMs' INternal States for hallucInation DEtection (INSIDE). In particular, a simple yet effective EigenScore metric is proposed to better evaluate responses' self-consistency, which exploits the eigenvalues of responses' covariance matrix to measure the semantic consistency/diversity in the dense embedding space. Furthermore, from the perspective of self-consistent hallucination detection, a test time feature clipping approach is explored to truncate extreme activations in the internal states, which reduces overconfident generations and potentially benefits the detection of overconfident hallucinations. Extensive experiments and ablation studies are performed on several popular LLMs and questionanswering (QA) benchmarks, showing the effectiveness of our proposal. Large Language Models (LLMs) have recently achieved a milestone breakthrough and demonstrated impressive abilities in various applications (Ouyang et al., 2022; OpenAI, 2023). However, it has been widely observed that even the state-of-the-art LLMs often make factually incorrect or nonsense generations (Cohen et al., 2023; Ren et al., 2022; Kuhn et al., 2022), which is also known as knowledge hallucination (Ji et al., 2023). The potentially unreliable generations make it risky to deploy LLMs in practical scenarios.

A photographer used artificial intelligence to bring stars who left us too soon back to life - creating eerie portraits of Princess Diana, Kurt Cobain, John Lennon, Janis Joplin, Freddie Mercury and others. The haunting and realistic images are the work of Alper Yesiltas, a photographer based in Turkey, created the portraits for a project titled'As If Nothing Happened.' He used artificial intelligence photo enhancer software and photo editing programs to create the pictures. 'With the development of AI technology, I've been excited for a while, thinking that "anything imaginable can be shown in reality,"' Yesiltas wrote about the project. The haunting and realistic images are the work of Alper Yesiltas, a photographer based in Turkey, created the portraits for a project titled'As If Nothing Happened.' 'With the development of AI technology, I've been excited for a while, thinking that "anything imaginable can be shown in reality,"' Yesiltas wrote about the project.

People love singing with Freddie Mercury, but can you sing like Freddie too? We made an AI-powered singing challenge to find out. This experiment uses new, on-device machine learning models developed by Google Research to see how close your timbre, pitch, and melody are to Freddie's. Your audio doesn't get uploaded to servers to be analyzed, so your vocals stay private. FreddieMeter was made with The Mercury Phoenix Trust, a charity founded by Brian May, Roger Taylor, and their manager Jim Beach in memory of Freddie Mercury, who died in 1991 from AIDS-related causes.

Bohemian Rhapsody is one of the most well-known rock songs in the western world, and has been watched more than a billion times on YouTube alone. It's likely that pretty much everyone has had at least one crack at aping singer Freddie Mercury's unique vocal delivery. Now, Google, Queen and UMG have teamed up to build the FreddieMeter, an system to determine how close you can get to Mercury's voice. FreddieMeter is a collaboration between the band, Google's Creative Lab and the various record labels involved. It's been designed to analyze a person's voice to see how their pitch, timbre and melody comes in comparison to Mercury's own. At the end, you'll get a score between 0 and 100 to show off (or not) about how close you are to becoming one of rock's most enduring figures.

Robot" Rami Malek has been nominated as best male actor in a drama series for his performance as Elliot Alderson in the hit USA Network series at the 23rd SAG Awards. The actor took to Twitter to share his delight over the nomination. "Gotta thank my peers for the love and respect they've showed me with this @SAGawards nomination," Malek said. Fans will know if Malek won the award when the ceremony airs on Jan. 29, 2017. Aside from a possible win from Malek, fans can also expect to see the actor in a project that has been waiting to be made for years now. The actor was tapped to replace Sasha Baron Cohen in the long-gestating Queen biopic titled "Bohemian Rhapsody," according to Variety. During an appearance on "Jimmy Kimmel Live," Malek opened up for the first time about playing the legendary musician Freddie Mercury. Who doesn't know that music? Of course I have to prepare," Malek said about the status of the film.

Robot" star Rami Malek has been tapped to play Queen frontman Freddie Mercury in a biopic about the band entitled "Bohemian Rhapsody." The actor will replace Sasha Baron Cohen, who left the project due to creative differences, according to Entertainment Weekly. The screenplay for the film was written by Anthony McCarten. The movie will be directed by Bryan Singer. Original Queen members Brian May and Roger Taylor will serve as the movie's music producers. Cohen was tapped to play Mercury in 2010. He eventually dropped out of the project in 2013 because of creative differences from the members of the band. In an interview Howard Stern, the actor explained the reason behind the departure, saying: "The problem is -- and I think it's with any biopic, and I fully understand why Queen wanted to do this -- if you're in control of your rights and your life story, why wouldn't you depict yourself as great as possible?" Cohen also said he had an issue about the living members of the group wanting to end the movie with the band carrying on after Mercury died of AIDS. Aside from the upcoming film, fans can also look forward to seeing Malek in the thriller "Buster's Mal Heart." The film, which debuted at the Toronto International Film Festival, will hit theaters early 2017, according to Deadline. The film follows the story of Buster, a mountain man who squats in empty homes. Before he became what he is, Buster was a family guy. The movie explores how the shift from one life to another happened. The USA TV show will return next year, although an air date has not been announced. Rami Malek will play Freddie Mercury in the upcoming Queen biopic. Robot" arrives at the 68th Primetime Emmy Awards in Los Angeles, California U.S., September 18, 2016.