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Happy, sad or angry? AI can detect emotions in text according to new research

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Happy, sad or angry? AI can detect emotions in text according to new research


texting
Credit: Pixabay/CC0 Public Domain

Artificial intelligence (AI) has begun to permeate many facets of the human experience. AI is not just a tool for analyzing data—it’s transforming the way we communicate, work and live. From ChatGPT through to AI video generators, the lines between technology and parts of our lives have become increasingly blurred.

But do these technological advances mean AI can identify our feelings online?

In our research published in the International Journal of Market Research, we examined whether AI could detect human emotions in posts on X (formerly Twitter).

Our research focused on how emotions expressed in used posts about certain non-profit organizations can influence actions such as the decision to make donations to them at a later point.

Using emotions to drive a response

Traditionally, researchers have relied on sentiment analysis, which categorizes messages as positive, negative or neutral. While this method is simple and intuitive, it has limitations.

Human emotions are far more nuanced. For example, anger and disappointment are both negative emotions, but they can provoke very different reactions. Angry customers may react much more strongly than disappointed ones in a business context.

To address these limitations, we applied an AI model that could detect specific emotions—such as joy, anger, sadness and disgust—expressed in tweets.

Our research found emotions expressed on X could serve as a representation of the public’s general sentiments about specific non-profit organizations. These feelings had a direct impact on donation behavior.

Detecting emotions

We used the “transformer transfer learning” model to detect emotions in text. Pre-trained on massive datasets by companies such as Google and Facebook, transformers are highly sophisticated AI algorithms that excel at understanding natural language (languages that have developed naturally as opposed to computer languages or code).

We fine-tuned the model on a combination of four self-reported emotion datasets (over 3.6 million sentences) and seven other datasets (over 60,000 sentences). This allowed us to map out a wide range of emotions expressed online.

For example, the model would detect joy as the dominant emotion when reading a X post such as, “Starting our mornings in schools is the best! All smiles at #purpose #kids.”

Conversely, the model would pick up on sadness in a tweet saying, “I feel I have lost part of myself. I lost Mum over a month ago, Dad 13 years ago. I’m lost and scared.”

The model achieved an impressive 84% accuracy in detecting emotions from text, a noteworthy accomplishment in the field of AI.

We then looked at tweets about two New Zealand-based organizations—the Fred Hollows Foundation and the University of Auckland. We found tweets expressing sadness were more likely to drive donations to the Fred Hollows Foundation, while anger was linked to an increase in donations to the University of Auckland.

Ethical questions as AI evolves

Identifying specific emotions has significant implications for sectors such as marketing, education and health care.

Being able to identify people’s emotional responses in specific contexts online can support decision makers in responding to their individual customers or their broader market. Each specific emotion being expressed in social media posts online requires a different reaction from a company or organization.

Our research demonstrated that different emotions lead to different outcomes when it comes to donations.

Knowing sadness in marketing messages can increase donations to non-profit organizations allows for more effective, emotionally resonant campaigns. Anger can motivate people to act in response to perceived injustice.

While the transformer transfer learning model excels at detecting emotions in text, the next major breakthrough will come from integrating it with other data sources, such as voice tone or facial expressions, to create a more complete emotional profile.

Imagine an AI that not only understands what you’re writing but also how you’re feeling. Clearly, such advances come with ethical challenges.

If AI can read our emotions, how do we ensure this capability is used responsibly? How do we protect privacy? These are crucial questions that must be addressed as the technology continues to evolve.

More information:
Sanghyub John Lee et al, The power of specific emotion analysis in predicting donations: A comparative empirical study between sentiment and specific emotion analysis in social media, International Journal of Market Research (2024). DOI: 10.1177/14707853241261248

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Happy, sad or angry? AI can detect emotions in text according to new research (2024, October 1)
retrieved 1 October 2024
from https://techxplore.com/news/2024-10-happy-sad-angry-ai-emotions.html

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Discovery of a new North American parasitic worm in snakes from the Kanto region

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Discovery of a new North American parasitic worm in snakes from the Kanto region


Are snakes in Honshu facing tough times?
A. The Japanese striped snake E. quadrivirgata infected with O. elongatum (dark arrows). B. The freshwater snail Physella acuta. C. Ochetosoma elongatum. Credit: Dr. Tsukasa Waki

A research group has discovered a new North American trematode, Ochetosoma elongatum, for the first time in Japan in the oral cavities of three native snake species in the Kanto region.

In addition to investigating its life cycle in the wild, the authors conducted a comprehensive literature review to explore the route of invasion of this parasite. The findings of this study were published in Parasitology International.

Ochetosoma elongatum is a snake trematode which is distributed in North America. However, the adult was discovered for the first time in Japan in the mouths of three native snake species in the Kanto region. A previous study reported the presence of a related North American trematode (Ochetosoma kansense) in western Japan, indicating that the two North American trematodes are now infecting native snakes in Japan.

Are snakes in Honshu facing tough times?
Life cycle of Ochetosoma elongatum in Japan. Credit: Dr. Tsukasa Waki

The sporocysts and cercariae were detected in the North American freshwater snail Physella acuta, which has introduced and established its population in Japan. The cercarae is thought to infect frogs and develop into metacercariae. The metacercariae develop into adults after the host frog was fed by the Japanese snakes, the definitive host.

The snail Physella acuta are thought to be introduced to Japan with imported freshwater plants for aquariums. The increased demand for ornamental fish and exotic pets likely led to the introduction of infected Physella acuta snails and/or North American snakes, resulting in the introduction of this parasite to Japan.

The study’s authors included Harushige Seo (an undergraduate student), Eriko Ansai (a graduate student), Tetsuya Sase (an undergraduate student), Associate Professor Tsukasa Waki, and Lecturer Yosuke Kojima from the Faculty of Science, Toho University.

More information:
Harushige Seo et al, Introduction of a snake trematode of the genus Ochetosoma in eastern Japan, Parasitology International (2024). DOI: 10.1016/j.parint.2024.102947

Provided by
Toho University


Citation:
Discovery of a new North American parasitic worm in snakes from the Kanto region (2024, October 1)
retrieved 1 October 2024
from https://phys.org/news/2024-10-discovery-north-american-parasitic-worm.html

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Farmer sentiment reaches lowest levels since 2016 as income expectations weaken

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Farmer sentiment reaches lowest levels since 2016 as income expectations weaken


Farmer sentiment reaches lowest levels since 2016 as income expectations weaken
Farmer sentiment reaches lowest levels since 2016 as income expectations weaken. Credit: Purdue/CME Group Ag Economy Barometer/James Mintert

In September, the Purdue University/CME Group Ag Economy Barometer recorded its lowest readings since March 2016. Declining income expectations pushed farmer sentiment down as the barometer fell 12 points to 88, and the Index of Future Expectations dropped 14 points to 94. The Index of Current Conditions also fell 7 points to 76, which nearly matched levels seen in April 2020, during the height of COVID-19 concerns for farmers. This month’s survey was conducted from Sept. 9–13, 2024.

September’s survey revealed that farmers are increasingly worried about commodity prices, input costs, agricultural trade prospects and the potential impact of the upcoming election on their farm operations. When asked to identify their top concerns for the coming year, low commodity prices and high input costs were nearly tied, with 34% of farmers citing input prices and 33% pointing to lower output prices as their primary concerns. Interest rates trailed behind as a top concern for 17% of respondents.

Producers’ apprehensions about commodity prices matched up with their lack of confidence in the future of U.S. agricultural exports; only 26% of respondents expect exports to rise over the next five years, the most pessimistic response to this question since it was first introduced in 2019. Additionally, 78% of producers expressed concern that government policy changes following the fall 2024 elections could impact their farms.

“The continued drop in the barometer reflects deepening concerns among farmers regarding expectations for farm income in 2024 and 2025,” said James Mintert, the barometer’s principal investigator and director of Purdue University’s Center for Commercial Agriculture.

“It’s notable that producer sentiment dropped back to levels last seen in 2016 when the U.S. farm economy was in the early stages of an economic downturn. In addition to commodity prices and input costs weighing heavily on their operations, producers are also facing considerable uncertainty about what lies ahead for their farms with the possible government policy changes following the upcoming 2024 elections.”

The Farm Financial Performance Index fell for the third consecutive month, dropping to 68 in September from 72 in August. Farmers’ financial expectations have declined markedly compared to a year ago, as the index was at 86 in September 2023—an 18-point difference. While the Farm Capital Investment Index increased by 4 points from August to a reading of 35, it sits just above its all-time low, indicating that many producers believe it is not an opportune time for making large investments.

The Short-Term Farmland Value Expectations Index dropped by 10 points to 95. This is the first time since 2020 that the index fell below 100, indicating that more farmers are expecting a decline in farmland values over the next year than those who anticipate an increase. This month’s shift from a positive to a weaker outlook is attributable to a significant decrease in the percentage of producers forecasting rising values and a rise in those who expect values to remain steady.

The September survey marks the fourth consecutive year that the barometer has included questions regarding cover crop usage among corn and soybean producers. Consistent with prior years’ surveys, more than half of the respondents indicated that they currently plant cover crops on part of their farms, while an additional 1 in 5 farmers reported planting cover crops sometime in the past.

Interestingly, farmers who currently use cover crops say they are devoting a larger proportion of their farm’s acreage to cover crops than in the past. In 2021, 41% of cover crop users noted planting them on more than 25% of their farm’s acreage. This figure rose to 50% in 2023, and in this year’s survey, 68% of cover crop users indicated planting cover crops on more than one-fourth of their farms.

More information:
Ag Economy Barometer: ag.purdue.edu/commercialag/ageconomybarometer/

Provided by
Purdue University


Citation:
Farmer sentiment reaches lowest levels since 2016 as income expectations weaken (2024, October 1)
retrieved 1 October 2024
from https://phys.org/news/2024-10-farmer-sentiment-lowest-income-weaken.html

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Biohybrid swimming robot uses motor neurons and cardiomyocytes to emulate muscle tissue

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Biohybrid swimming robot uses motor neurons and cardiomyocytes to emulate muscle tissue


A bioelectronic, neuromuscular swimming robot
Wirelessly controllable bioelectronic neuromuscular robots for steering actuation behavior. (A) Dynamic control of the heart via the neural innervation of cardiomyocytes (CMs). (B) Schematic of a bioelectronic neuromuscular robot with selective motor innervation of CMs driven by a wireless frequency multiplexing bioelectronic device. Credit: Hiroyuki Tetsuka

A combined team of bio researchers and roboticists from Brigham and Women’s Hospital, in the U.S., and the iPrint Institute, in Switzerland, has developed a tiny swimming robot using human motor neurons and cardiomyocytes grown to emulate muscle tissue.

Their paper is published in the journal Science Robotics. Nicole Xu, a mechanical engineer at the University of Colorado Boulder, has published a Focus piece in the same journal issue outlining ongoing work to create bioinspired robots using animal tissue.

For many years, science fiction writers and movie makers have used the idea of combining electronics, computers and animal tissue to create robots with unique and sometimes terrifying attributes. In the real world, Xu describes such work as ongoing.

Animals, including humans, have abilities that far surpass anything robots can do. Doing laundry, for example, requires a myriad of skills, including sorting dirty clothes, choosing washer and dryer settings, and folding or hanging clothes.

Such activities require both dexterity and mental processing. Because of that, roboticists are exploring the development of biohybrid robots. The research team created a ray-like swimming robot with a computer brain that controls human muscle cells activated by human motor neurons.






Credit: Hiroyuki Tetsuka

To create the robot, the researchers cultured both motor neurons and cardiomyocytes that were produced using human pluripotent stem cells. The cardiomyocytes were programmed to grow into muscle cell tissue on a scaffolding that resembled ray fins in a way that allowed them to junction with the motor neurons.

This allowed for the creation of electrical synapses. Some of the motor neurons were then connected to an electronic processor that served as the robot’s brain. It housed Wi-Fi circuitry that transferred signals from human controllers to either the left or right fin, or both.

A bioelectronic, neuromuscular swimming robot
Fabrication process for the flexible PCB-based wireless bi-frequency bioelectronic device. Credit: Hiroyuki Tetsuka

In this way, the researchers were able to control the movement of their robot, eventually giving it the ability to swim.

Over time, the research team found they could maneuver the robot with precision, including making sharp turns. They also found they could make it swim at speeds of up to 0.52 ± 0.22 mm/s.

More information:
Hiroyuki Tetsuka et al, Wirelessly steerable bioelectronic neuromuscular robots adapting neurocardiac junctions, Science Robotics (2024). DOI: 10.1126/scirobotics.ado0051

Nicole W. Xu, Float like a butterfly, swim like a biohybrid neuromuscular robot, Science Robotics (2024). DOI: 10.1126/scirobotics.ads4127

© 2024 Science X Network

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Biohybrid swimming robot uses motor neurons and cardiomyocytes to emulate muscle tissue (2024, October 1)
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Study shows that wild animals also get accustomed to humans

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Study shows that wild animals also get accustomed to humans


Study shows that wild animals also get accustomed to humans
Springbok with tracking collar. Credit: Robert Hering

The tagging of wildlife provides important insights into their movements, physiology, and behavior amid globally changing ecosystems. However, the stress caused by capture, handling, and tagging can have an effect on the locomotion and activity of the animals and thus also affect the validity of the collected data. Therefore, Potsdam researchers led by Jonas Stiegler and Niels Blaum, in collaboration with over 100 other scientists worldwide, analyzed the data of 1,585 individuals from 42 species that had been fitted with GPS collars.

The research is published in the journal Nature Communications.

“Over a period of 20 days after release, we analyzed how active the animals were and what distances they covered in order to see how much the animals deviated from their normal behavior and how long it took them to recover from the disturbance,” explains Stiegler, the lead author of the study.

30 of the 42 species studied changed their behavior significantly in the first few days after release, although there were noticeable differences between the species. For example, predators covered shorter distances on average after release, while most herbivores covered longer distances than normal. Moose (63% further than the long-term average) and eland (+52%) had the largest increase in displacement distance, while leopards (-65%) and wolves (-44%) exhibited the largest decrease.

In general, omnivores and carnivores were less active in the first few days, while herbivores showed both increased and decreased activity rates. However, the data also revealed that the animals “recovered” at different rates: All species basically returned to their normal behavior within four to seven days.

Study shows that wild animals also get accustomed to humans
A hare fitted with a tracking collar jumps out of a transport box. Credit: Carolin Scholz

Omnivores and carnivores went back to a normal degree of activity and movement within five to six days. Herbivores exhibited a normal range of movement more quickly (four to five days), but only returned to their usual degree of activity at a later stage (six to eight days). In addition, larger animals recovered more quickly than smaller ones.

“However, it was particularly noteworthy that animals whose habitat is more strongly influenced by humans were the first to return to normal behavior,” Stiegler said. “Our evaluation clearly shows that the periods over which wild animals are tracked should be longer than one week in order to obtain meaningful results and to actually be able to study their natural behavior.”

More information:
Jonas Stiegler et al, Mammals show faster recovery from capture and tagging in human-disturbed landscapes, Nature Communications (2024). DOI: 10.1038/s41467-024-52381-8

Citation:
Study shows that wild animals also get accustomed to humans (2024, October 1)
retrieved 1 October 2024
from https://phys.org/news/2024-10-wild-animals-accustomed-humans.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.





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