从12306的余票查询谈数据库的承载问题
编程、算法、数据库技术的分享
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Hot Topics
AI startups collectively switched jobs to OpenAI, and the security team regrouped after Ilya left!
Jun 08, 2024 pm 01:00 PM
Last week, amid the internal wave of resignations and external criticism, OpenAI was plagued by internal and external troubles: - The infringement of the widow sister sparked global heated discussions - Employees signing "overlord clauses" were exposed one after another - Netizens listed Ultraman's "seven deadly sins" Rumors refuting: According to leaked information and documents obtained by Vox, OpenAI’s senior leadership, including Altman, was well aware of these equity recovery provisions and signed off on them. In addition, there is a serious and urgent issue facing OpenAI - AI safety. The recent departures of five security-related employees, including two of its most prominent employees, and the dissolution of the "Super Alignment" team have once again put OpenAI's security issues in the spotlight. Fortune magazine reported that OpenA
Improved detection algorithm: for target detection in high-resolution optical remote sensing images
Jun 06, 2024 pm 12:33 PM
01 Outlook Summary Currently, it is difficult to achieve an appropriate balance between detection efficiency and detection results. We have developed an enhanced YOLOv5 algorithm for target detection in high-resolution optical remote sensing images, using multi-layer feature pyramids, multi-detection head strategies and hybrid attention modules to improve the effect of the target detection network in optical remote sensing images. According to the SIMD data set, the mAP of the new algorithm is 2.2% better than YOLOv5 and 8.48% better than YOLOX, achieving a better balance between detection results and speed. 02 Background & Motivation With the rapid development of remote sensing technology, high-resolution optical remote sensing images have been used to describe many objects on the earth’s surface, including aircraft, cars, buildings, etc. Object detection in the interpretation of remote sensing images
iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos
Jul 18, 2024 am 05:48 AM
Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps
How to handle database connection errors in PHP
Jun 05, 2024 pm 02:16 PM
To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.
70B model generates 1,000 tokens in seconds, code rewriting surpasses GPT-4o, from the Cursor team, a code artifact invested by OpenAI
Jun 13, 2024 pm 03:47 PM
70B model, 1000 tokens can be generated in seconds, which translates into nearly 4000 characters! The researchers fine-tuned Llama3 and introduced an acceleration algorithm. Compared with the native version, the speed is 13 times faster! Not only is it fast, its performance on code rewriting tasks even surpasses GPT-4o. This achievement comes from anysphere, the team behind the popular AI programming artifact Cursor, and OpenAI also participated in the investment. You must know that on Groq, a well-known fast inference acceleration framework, the inference speed of 70BLlama3 is only more than 300 tokens per second. With the speed of Cursor, it can be said that it achieves near-instant complete code file editing. Some people call it a good guy, if you put Curs
China Mobile: Humanity is entering the fourth industrial revolution and officially announced 'three plans”
Jun 27, 2024 am 10:29 AM
According to news on June 26, at the opening ceremony of the 2024 World Mobile Communications Conference Shanghai (MWC Shanghai), China Mobile Chairman Yang Jie delivered a speech. He said that currently, human society is entering the fourth industrial revolution, which is dominated by information and deeply integrated with information and energy, that is, the "digital intelligence revolution", and the formation of new productive forces is accelerating. Yang Jie believes that from the "mechanization revolution" driven by steam engines, to the "electrification revolution" driven by electricity, internal combustion engines, etc., to the "information revolution" driven by computers and the Internet, each round of industrial revolution is based on "information and "Energy" is the main line, bringing productivity development
Problem-Solving with Python: Unlock Powerful Solutions as a Beginner Coder
Oct 11, 2024 pm 08:58 PM
Pythonempowersbeginnersinproblem-solving.Itsuser-friendlysyntax,extensivelibrary,andfeaturessuchasvariables,conditionalstatements,andloopsenableefficientcodedevelopment.Frommanagingdatatocontrollingprogramflowandperformingrepetitivetasks,Pythonprovid
Groundbreaking CVM algorithm solves more than 40 years of counting problems! Computer scientist flips coin to figure out unique word for 'Hamlet'
Jun 07, 2024 pm 03:44 PM
Counting sounds simple, but in practice it is very difficult. Imagine you are transported to a pristine rainforest to conduct a wildlife census. Whenever you see an animal, take a photo. Digital cameras only record the total number of animals tracked, but you are interested in the number of unique animals, but there is no statistics. So what's the best way to access this unique animal population? At this point, you must be saying, start counting now and finally compare each new species from the photo to the list. However, this common counting method is sometimes not suitable for information amounts up to billions of entries. Computer scientists from the Indian Statistical Institute, UNL, and the National University of Singapore have proposed a new algorithm - CVM. It can approximate the calculation of different items in a long list.
