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Jul 16, 2023

Machine learning-based guilt detection in text

Posted by in categories: futurism, robotics/AI

We introduce a novel Natural Language Processing (NLP) task called guilt detection, which focuses on detecting guilt in text. We identify guilt as a complex and vital emotion that has not been previously studied in NLP, and we aim to provide a more fine-grained analysis of it. To address the lack of publicly available corpora for guilt detection, we created VIC, a dataset containing 4,622 texts from three existing emotion detection datasets that we binarized into guilt and no-guilt classes. We experimented with traditional machine learning methods using bag-of-words and term frequency-inverse document frequency features, achieving a 72% f1 score with the highest-performing model. Our study provides a first step towards understanding guilt in text and opens the door for future research in this area.

Jul 16, 2023

Squeeze Your Hands for Sharper Memory

Posted by in category: health

Unveiling the memory-enhancing power of isometric handgrip exercise.

Jul 16, 2023

Quantifying Biological Age: Blood Test #4 In 2023

Posted by in categories: biotech/medical, genetics, life extension

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Jul 16, 2023

Generative AI ‘fools’ scientists with artificial data, bringing automated data analysis closer

Posted by in categories: materials, robotics/AI

The same AI technology used to mimic human art can now synthesize artificial scientific data, advancing efforts toward fully automated data analysis.

Researchers at the University of Illinois Urbana-Champaign have developed an AI that generates artificial data from microscopy experiments commonly used to characterize atomic-level material structures. Drawing from the technology underlying art generators, the AI allows the researchers to incorporate and experimental imperfections into the generated data, allowing material features to be detected much faster and more efficiently than before.

The study, “Leveraging generative adversarial networks to create realistic scanning transmission electron microscopy images,” was published in the journal npj Computational Materials.

Jul 16, 2023

Revealing the invisible: Detecting variations in extragalactic magnetic fields

Posted by in categories: cosmology, evolution, particle physics

Magnetic fields are common throughout the universe but incredibly challenging to study. They don’t directly emit or reflect light, and light from all along the electromagnetic spectrum remains the primary purveyor of astrophysical data. Instead, researchers have had to find the equivalent of cosmic iron filings—matter in galaxies that is sensitive to magnetic fields and also emits light marked by the fields’ structure and intensity.

In a new study published in The Astrophysical Journal, several Stanford astrophysicists have studied infrared signals from just such a material—magnetically aligned dust grains embedded in the cold, dense clouds of star-forming regions. A comparison to light from cosmic ray electrons that has been marked by magnetic fields in warmer, more diffuse material showed surprising differences in the measured magnetic fields of .

Stanford astrophysicist and member of the Kavli Institute for Particle Acceleration and Cosmology (KIPAC) Enrique Lopez-Rodriguez explains the differences and what they could mean for galactic growth and evolution.

Jul 16, 2023

How body’s immune response offers alternative approach to neuropathic pain therapies: Study

Posted by in category: futurism

The study explores the possibility of natural killer cells as an alternative for treating neuropathic pain.

Jul 16, 2023

Doctors re-attach boy’s head post-car accident with ‘amazing’ surgery

Posted by in category: biotech/medical

Doctors in Israel have re-attached a boy’s head after he was hit by a car while riding his bike.

Twelve-year-old Palestinian Suleiman Hassan, from the West Bank, suffered an internal decapitation — where the base of the skull and the top of the spine become detached, but the skin is still intact.

Decapitation is the total separation of the head from the body. Internal decapitation occurs when sudden impact to the head causes the ligaments and muscles holding the skull in position on the top vertebrae of the spine to tear.

Jul 16, 2023

We can’t predict the future, but appreciating its uncertainties will make us happier

Posted by in categories: biological, evolution, mathematics, neuroscience

In it, he explores how we can make better, scientifically informed predictions about the world around us, using maths. “Mathematics can provide us with the objective tools to bypass the foibles of our own biology – the limitations imposed by our own thought processes, the compulsions that ultimately make us human, but let us down when it comes to making inferences about the world around us,” he writes. “They are humanity’s shortcuts: the preconceptions and cognitive biases, refined over millennia of evolution, that all too often lead us astray when we try to apply our brain’s old rules to our society’s new environments.”

No matter how tempting it is to think, “Ooh, that’s a bit spooky” when faced with a completely random coincidence or chance occurrence, we should all be expecting unusual things to happen all the time, he says.

Yates describes a person who, when browsing in a secondhand bookshop far from where they grew up, opens a copy of their favourite children’s book, only to find their own name inscribed inside. Yet, he says, “the law of truly large numbers” dictates that, just as someone wins the lottery almost every week, with enough opportunities, such extraordinary coincidences are far more likely to happen than you might think. “There are so many different types of coincidences that make us say: ‘Well, that’s extraordinary.’ But it’s not unlikely that some of them happen to us every so often.”

Jul 16, 2023

Even the scientists who build AI can’t tell you how it works

Posted by in category: robotics/AI

‘We built it, we trained it, but we don’t know what it’s doing.’

Jul 16, 2023

You studied computer science but big tech no longer wants you. Now what?

Posted by in categories: computing, science

Students at the Bay Area’s best universities once dreamed of working for Apple, Google and Meta. Then the lay-offs happened | 1843 magazine.