Language Log

When I first encountered AI Overview (AIO) about half a year ago, I was amazed by how it would whirl and swirl while searching for an answer to whatever query I had entered into the Google search engine.  It would usually find a helpful answer within a second.

As the months passed, the response time became more rapid (usually instantaneous), the answers better organized and almost always helpful, but sometimes AIO would simply not answer.

About a week ago, I was stunned when occasionally AIO — after thinking for a split second — would declare that it didn't have an answer for what I had asked about.

The first four panels of today's SMBC:

In this comment to "'Neutrino Evidence Revisited (AI Debates)' | Is Mozart's K297b authentic?" (11/13/24), I questioned whether John Searle's "Chinese room" argument was intelligently designed and encouraged those who encounter it to reflect on what it did — and did not — demonstrate.

In the same comment, I also queried the meaning of "understand" and its synonyms ("comprehend", and so forth).

Both the "Chinese room" and "understanding" had been raised by skeptics of AI, so here I'm treating them together.

[This is a guest post by Conal Boyce]

For basic facts, see below.

Thanks to AI and our Japanese colleagues, the study of Peru's mysterious Nazca lines has made a quantum leap forward.

AI Revealed a New Trove of Massive Ancient Symbols
The 2,000-year-old geoglyphs offer clues to ancient Nazca people and their rituals
By Aylin Woodward, Science Shorts, WSJ (Nov. 6, 2024)

Anthropologists have spent decades documenting a mysterious collection of symbols etched into the Peruvian desert, depicting everything from human decapitation and domesticated animals to knife-wielding orcas.

In the past century or so, 430 of these geoglyphs have been found. Now, an analysis using artificial intelligence has nearly doubled the number in just six months.

Constructed primarily by ancient South American people known as the Nazca millennia ago, the geoglyphs, which can be as long as a football field, are concentrated on a roughly 150-mile-square area called the Nazca Pampa. The Nazca people created the geoglyphs in an area unsuitable for farming, removing the black stones that pepper the desert to reveal a layer of white sand beneath. The contrast between tones yielded the geoglyphs.

Much of their mystery lies in how challenging it is to spot them.

“These geoglyphs have been around for at least 2,000 years, during which time dust has accumulated on the white lines and areas, causing their colors to fade,” said Masato Sakai, a professor of anthropology at Yamagata University in Japan and lead author of a study published in the journal Proceedings of the National Academy of Sciences detailing the new discoveries.

The symbols fall into two categories. Larger figurative geoglyphs, known as the Nazca Lines, average about 300 feet in length, Sakai said, while smaller ones, akin to marble reliefs, average just 30 feet.

Whisper is a widely-used speech-to-text system from OpenAI — and it turns out that generative AI's hallucination problem afflicts Whisper to a surprisingly serious extent, as documented by Allison Koenecke, Anna Seo Gyeong Choi, Katelyn X. Mei, Hilke Schellmann, and Mona Sloane,"Careless Whisper: Speech-to-Text Hallucination Harms", In The 2024 ACM Conference on Fairness, Accountability, and Transparency,  2024:

Abstract: Speech-to-text services aim to transcribe input audio as accurately as possible. They increasingly play a role in everyday life, for example in personal voice assistants or in customer-company interactions. We evaluate Open AI’s Whisper, a state-of-the-art automated speech recognition service outperforming industry competitors, as of 2023. While many of Whisper’s transcriptions were highly accurate, we find that roughly 1% of audio transcriptions contained entire hallucinated phrases or sentences which did not exist in any form in the underlying audio. We thematically analyze the Whisper-hallucinated content, finding that 38% of hallucinations include explicit harms such as perpetuating violence, making up inaccurate associations, or implying false authority. We then study why hallucinations occur by observing the disparities in hallucination rates between speakers with aphasia (who have a lowered ability to express themselves using speech and voice) and a control group. We find that hallucinations disproportionately occur for individuals who speak with longer shares of non-vocal durations—a common symptom of aphasia. We call on industry practitioners to ameliorate these language-model-based hallucinations in Whisper, and to raise awareness of potential biases amplified by hallucinations in downstream applications of speech-to-text models.

This paper's content is interesting — Mirzadeh, Iman, Keivan Alizadeh, Hooman Shahrokhi, Oncel Tuzel, Samy Bengio, and Mehrdad Farajtabar. "GSM-Symbolic: Understanding the Limitations of Mathematical Reasoning in Large Language Models." arXiv preprint arXiv:2410.05229 (2024). In short, the authors found that small changes in Grade-School Mathematics benchmark questions, like substituting different numerical values or adding irrelevant clauses, caused all the tested LLMs to do worse. You should read the whole thing for the details, to which I'll return another time.

Things are happening very fast with this "experimental" internet search tool.  I realize that it is a new technology, so naturally there are bugs and kinks that have to be worked out, and I don't want to be too harsh with it.  Moreover, at a certain level, it is already serving a yeomanly purpose.

For instance, I asked Google, "should ich be capitalized in the middle of a sentence".  AI Overview (henceforth AIO) promptly stepped in and provided the following straightforward response:

No, ich should not be capitalized in the middle of a sentence in German. In German, the first-person singular pronoun ich (I) is only capitalized when it is the first word in a sentence.

In English, the singular “I” is always capitalized when used as a first-person personal pronoun. This includes all contractions of “I”, such as “I'm” and “I'll”.

Other things to capitalize in the middle of a sentence include…. [details omitted here]

[N.B.:  If you don't have time to read through this long and complicated post, cut to the "Closing note" at the bottom.]

Lately when I do Google searches, especially on obscure and challenging subjects, AI Overview leaps into the fray and takes precedence at the very top, displacing Wikipedia down below, and even Google's own responses, which have been increasingly frequent in recent months, are pushed over to the top right.

AI Overview, on first glance, seems convenient and useful, but — when I start to dig deeper, I find that there are problems.  As an example, I will give the case of the name of the Snake River, and maybe mention a few other instances of AI Overview falling short, but still being swiftly, though superficially, helpful.

Google has created an experimental — and free — system called NotebookLM. Here's its current welcome page:

Elle Cordova offers an update from ChatGPT on the number of Rs in "strawberry":

Daysia Tolentino, "Trump shares fake photo of Harris with Diddy in now-deleted Truth Social post", NBC News 9/20/2024:

Amid the recent news of Sean “Diddy” Combs’ arrest, former President Donald Trump reposted a doctored image falsely showing Vice President Kamala Harris with Combs with text questioning if she was involved in his alleged “freak offs.”

The image, which Trump reposted to his Truth Social profile, is an edited version of a 2001 photo of Harris with former talk show host Montel Williams, whom she briefly dated, and his daughter Ashley. The edit replaced Montel Williams’ face with a photo of Combs.

This is not the first time the Republican presidential nominee has posted a fake image in an effort to bolster his campaign. Trump has posted several AI-generated images, including some falsely depicting Taylor Swift and her fans endorsing him, and one of Harris speaking to a crowd of communists in Chicago during the Democratic National Convention.

Apparently not. Given this recent tweet, in which Google AI Overview explains that "October 21 is not a Libra, as the Libra zodiac sign is from September 23 to October 22", I thought I'd try for myself. The result had a different format but the same problem: