What Is ChatGPT?

ChatGPT is a large language model chatbot developed by OpenAI based on GPT=3. 5 (Click to learn more). It has a remarkable ability to interact in a conversational dialogue form and provide responses that can appear surprisingly human. Large language models perform the task of predicting the next word in a series of words.

Is ChatGPT Free To Use?

The use of ChatGPT is currently free during the “research preview” time. The chatbot is currently open for users to try out and provide feedback on the responses so that the AI can become better at answering questions and to learn from its mistakes. However, ChatGPT is envisioned as a tool that the public will eventually have to pay to use.

How Can ChatGPT Be Used?

ChatGPT can write code, poems, songs, and even short stories in the style of a specific author. The expertise in following directions elevates ChatGPT from an information source to a tool that can be asked to accomplish a task. This makes it useful for writing an essay on virtually any topic. ChatGPT can function as a tool for generating outlines for articles or even entire novels. It will provide a response for virtually any task that can be answered with written text.

Limitations

●ChatGPT sometimes writes plausible-sounding but incorrect or nonsensical answers. Fixing this issue is challenging, as: (1) during RL training, there’s currently no source of truth; (2) training the model to be more cautious causes it to decline questions that it can answer correctly; and (3) supervised training misleads the model because the ideal answer depends on what the model knows, rather than what the human demonstrator knows.

●ChatGPT is sensitive to tweaks (微调) to the input phrasing or attempting the same prompt multiple times. For example, given one phrasing of a question, the model can claim to not know the answer, but given a slight rephrase (重新措辞), it can answer correctly.

●While we’ve made efforts to make the model refuse inappropriate requests, it will sometimes respond to harmful instructions or exhibit biased behavior. We’re using the Moderation API to warn or block certain types of unsafe content, but we expect it to have some false negatives and positives for now. We’re eager to collect user feedback to aid our ongoing work to improve this system.

Every holiday season, Patricia Gallagher fills her car with stuffed animals and drives around Philadelphia. She gives them not to kids but to seniors.

Patricia’s holiday tradition started in 2009. “I just got this idea to call two nursing homes at random and ask if I could come and read It was the Night Before Christmas,” she said. She brought some of her kids’ stuffed animals for the seniors to hold while she read. “But when I went to gather them and take them back to go to the next nursing home, nobody wanted to give up their stuffed animals,” she added. It was then and there that she realized the power of a simple holiday gift.

Patricia wanted to continue her tradition of giving, so she put an ad online, asking for gently used stuffed animals. In her first two years of collecting, she received more than 11,000 donated stuffed animals. She said sometimes local schools would hold stuffed animal collections on her behalf, or a child who outgrew their toys would donate. After receiving too many, Patricia started capping how many she would collect at a time, and said she could only take in about 250 stuffed animals each week during the holiday season. Then, she took them to nursing homes.

“The elderly want stuffed animals not only for comfort, but they were conversation starters. It reminded them of their childhood,” she said. And she recalled one man said, “You know, I never wanted to go to school. And my father said if I would go that day, he would take me to the Brooklyn Zoo. And you know what? This was the first animal I saw there and it looked just like this giraffe.”

Spreading joy isn’t just a holiday pastime for Patricia. She is also known as the “Happy Flower Lady” around Philadelphia, because she collects old flowers from stores and passes them out to anyone who needs a pick-me-up.

“When you give, you really do get more back,” Patricia said. “Every morning, whether it’s the flowers or the stuffed animals, I have a purpose.”

Water poisoning is caused by too much consumption of water during a short period of time. Water in and of itself is not poisonous by any means, but rapid intake of a large quantity of water can break the careful balance of sodium(钠)in the body fluids(体液). This contributes to a swelling of the cells, often in the central nervous system, including the brain.

When the cells can no longer bear the pressure, they can begin to die. This is indicated in serious forms of water poisoning. Symptoms of this condition include vomiting, headache and unresponsiveness. When the sodium in the blood falls to dangerous levels, brain damage and possibly death may occur.

What is a fatal(致命的)amount of water can vary from person to person, depending on one’s state of health, his or her physical activity at the time, the temperature and the amount of time in which the person consumes the water. For some, a one-time consumption of three liters can prove deadly. Although the person consuming the water may lose a lot of fluid during heavy labor or exercise, the electrolytes(电解质)are not replaced fast enough to avoid water poisoning.

Those particularly at risk for water poisoning are athletes engaged in long distance running like a marathon. Due to the need to replace large quantities of lost fluid, runners must drink a lot of water. This can lead to poisoning, so runners must replace their fluids with sports drinks that have added electrolytes. Other factors that contribute to water poisoning include activities that stimulate heavy sweating. The person working under extreme heat or intense humidity(湿气)must be careful when consuming water in order to maintain electrolyte balance. Mental diseases can also lead to water poisoning. Psychogenic polydipsia is a condition in which the affected person feels a need to drink a lot of water for unknown reasons.

One Chinese startup has apparently developed technology that allows it to identify individuals by their walk, even if their face is covered or they have their back to the camera.

Known as “gait recognition”, the technology invented by artificial intelligence startup Watrix analyses thousands of metrics (指标) about a person’s walk, from their body shape and the angle of arm movement to their posture and whether they have a toe-in or toe-out gait. All these individual features go into database that the software then goes through when attempting to identify people. According to an official statement from Watrix, the accuracy rate of gait technology at the laboratory level exceeds 96 percent.

Facial recognition technology has come a long way in recent years, but it still has a fundamental weakness — it needs to “see” people’s faces in order to identify them, so if someone’s face is covered their back is to the camera, it’s basically useless. Gait recognition, on the other hand, is much more reliable works from virtually any angle, and because it analyses so many metrics, it can identify subjects even if attempt to cover their legs. Disguises or fake limps are not very effective in fooling the technology either.

“Covering your legs would reduce the recognition score but we analyse all of a person’s body,” Huang Yongzhen, co-founder and chief executive of Watrix, said in an interview. “With facial recognition probably need to look into a camera-cooperation is not needed for them to be recognized by our technology.”

Watrix revealed the first version of their gait recognition technology in October of last year and since been in talks with security companies from Singapore, India, Russia, the Netherlands and Czech Republic for contracts. The technology has also been tested by public security officials for thousands of hours and used to solve dozens of police cases. Authorities in Shanghai and Beijing are already using recognition to detect wanted criminals and identify jaywalkers (乱穿马路的人).

The current version of gait recognition software isn’t yet capable of detecting people in real time the Chinese startup claims that it’s able to analyze an hour’s worth of video footage in just 10 minutes over 94% accuracy.