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Kyoto University center launches memorial website for 'genius' chimpanzee

The Japan Times

Kyoto University center launches memorial website for'genius' chimpanzee Ai, a chimpanzee known as a genius for her cognitive abilities, died on Jan. 9 at Kyoto University's Center for the Evolutionary Origins of Human Behavior. Ai was a research partner who taught me many things about the minds and existence of chimpanzees, as well as about humans, said Ikuma Adachi, 47, associate professor at the university, who worked with the chimpanzee for 18 years. Born in Africa, Ai arrived at the center in Inuyama, Aichi Prefecture, in 1977 at the age of 1. Adachi said she was curious and adapted well to a human-made environment. The Ai Project started in 1978 to investigate chimpanzees' thinking and language abilities. In 1985, a paper on Ai was published in the British scientific journal Nature. In 1989, she left the center using a key found nearby, drawing public attention.


ChimpACT: A Longitudinal Dataset for Understanding Chimpanzee Behaviors

Neural Information Processing Systems

Studying the behavior of non-human primates is essential for gaining evolutionary insights (Langer-graber et al., 2012), conducting biomedical research (Schapiro et al., 2005), and improving animal


Watch: Cow astonishes scientists with rare use of tools

BBC News

Scientists are rethinking what cattle are capable of after an Austrian cow named Veronika was found to use tools with impressive skill. The discovery, reported by researchers in Vienna, suggests cows may have far greater cognitive abilities than previously assumed. Veronika, a cow living in a mountain village in the Austrian countryside, has spent years perfecting the art of scratching herself using sticks, rakes, and brooms. Word of her behaviour eventually reached animal intelligence specialists in Vienna, who found Veronika used both ends of the same object for different tasks. If it were her back or another tough area that warranted a good scratch, she would use the bristle end of a broom.


Baby chimpanzees like to free fall through trees

Popular Science

Chimp infants are three times more likely to take risks than adults. Breakthroughs, discoveries, and DIY tips sent six days a week. Given the many similarities between humans and chimpanzees, one might assume that both species similarly engage in risky behavior within the same age range. However, according to a study recently published in the journal, it turns out that in chimps, it's the infants you have to watch out for. After studying videos of 119 wild chimpanzees, researchers found that chimpanzees' risky behavior peaks in their infancy, and then lessens as they get older.


'Genius' chimpanzee Ai dies in Japan at 49

The Japan Times

'Genius' chimpanzee Ai dies in Japan at 49 Studies involving Ai, a genius chimpanzee who has died at the age of 49, are said to have revealed various aspects of the chimpanzee mind. Ai, a genius chimpanzee that could recognize more than 100 Chinese characters and the English alphabet, has died at the age of 49, Japanese researchers have said. Ai, whose name meant love in Japanese, took part in studies on perception, learning and memory that advanced our understanding of primate intelligence, the Center for the Evolutionary Origins of Human Behavior at Kyoto University said in a statement. She died Friday from multiple organ failure and ailments related to old age, the school said. Aside from mastering Chinese characters and the alphabet, Ai could also identify the Arabic numerals from zero to nine and 11 colors, primatologist Tetsuro Matsuzawa said in 2014.


Ai, Japanese chimpanzee who counted and painted, dies at 49

BBC News

Ai, a female chimpanzee famous for her cognitive skills has died at 49, according to the Japanese institute where she lived. The Kyoto University's Center for the Evolutionary Origins of Human Behavior said Ai died on 9 January of old age and organ failure and that she was surrounded by staff when she died. Ai was born in western Africa and arrived at the Japanese institute in 1977. There, she became the namesake of the Ai Project, a research programme into the chimpanzee mind. Among the institute's noteable findings were the fact that Ai was able to use numbers and identify colours.


ChimpACT: A Longitudinal Dataset for Understanding Chimpanzee Behaviors

Neural Information Processing Systems

Understanding the behavior of non-human primates is crucial for improving animal welfare, modeling social behavior, and gaining insights into distinctively human and phylogenetically shared behaviors. However, the lack of datasets on non-human primate behavior hinders in-depth exploration of primate social interactions, posing challenges to research on our closest living relatives. To address these limitations, we present ChimpACT, a comprehensive dataset for quantifying the longitudinal behavior and social relations of chimpanzees within a social group. Spanning from 2015 to 2018, ChimpACT features videos of a group of over 20 chimpanzees residing at the Leipzig Zoo, Germany, with a particular focus on documenting the developmental trajectory of one young male, Azibo. ChimpACT is both comprehensive and challenging, consisting of 163 videos with a cumulative 160,500 frames, each richly annotated with detection, identification, pose estimation, and fine-grained spatiotemporal behavior labels. We benchmark representative methods of three tracks on ChimpACT: (i) tracking and identification, (ii) pose estimation, and (iii) spatiotemporal action detection of the chimpanzees. Our experiments reveal that ChimpACT offers ample opportunities for both devising new methods and adapting existing ones to solve fundamental computer vision tasks applied to chimpanzee groups, such as detection, pose estimation, and behavior analysis, ultimately deepening our comprehension of communication and sociality in non-human primates.


A Computable Game-Theoretic Framework for Multi-Agent Theory of Mind

Zhu, Fengming, Pan, Yuxin, Zhu, Xiaomeng, Lin, Fangzhen

arXiv.org Artificial Intelligence

Originating in psychology, $\textit{Theory of Mind}$ (ToM) has attracted significant attention across multiple research communities, especially logic, economics, and robotics. Most psychological work does not aim at formalizing those central concepts, namely $\textit{goals}$, $\textit{intentions}$, and $\textit{beliefs}$, to automate a ToM-based computational process, which, by contrast, has been extensively studied by logicians. In this paper, we offer a different perspective by proposing a computational framework viewed through the lens of game theory. On the one hand, the framework prescribes how to make boudedly rational decisions while maintaining a theory of mind about others (and recursively, each of the others holding a theory of mind about the rest); on the other hand, it employs statistical techniques and approximate solutions to retain computability of the inherent computational problem.


Chimpanzees shock biologists with rational thinking

Popular Science

The primates appear to change their minds based on the strength of evidence, just like humans. Breakthroughs, discoveries, and DIY tips sent every weekday. The human capacity for rational thinking makes us unique among the animal kingdom, according to wise, old Aristotle . However, an ever-growing body of research suggests that rationality might not be quite as distinctive a human quality as we might have thought. In a study recently published in the journal, researchers at the Ngamba Island Chimpanzee Sanctuary in Uganda presented chimpanzees with two boxes: one with food and one without a snack.


Simulating Extinct Species

Communications of the ACM

How did extinct animals move? Paleontologists are interested in figuring this out since it can tell us more about their ways of life, such as whether they were agile enough to hunt prey. It can also provide clues about how locomotion evolved; for example, when our ancestors started to walk upright. Researchers have come up with hypotheses about the movement of long-gone species by examining evidence such as fossilized bones or well-preserved footprints. Extinct animals can also be compared to similar living ones: comparing their limb length, for example, can give an idea of their speed of movement.