Machine learning & AI
You may not be able to teach an old dog new tricks, but Cornell researchers have found a way to train physical systems, ranging from computer speakers and lasers to simple electronic circuits, to perform machine-learning ...
Jan 26, 2022
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326
Consumer & Gadgets
Privacy measures that are meant to preserve the anonymity of smartphone users are no longer suitable for the digital age, a study suggested on Tuesday.
Jan 25, 2022
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281
Business
The Swiss army has told its ranks to stop using foreign instant-messaging services like WhatsApp, Signal and Telegram for official communications. Instead, it's opting for a Swiss alternative—in part over concerns about ...
Jan 5, 2022
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4
Internet
A piece of research undertaken by scientists at the Universidad Carlos III de Madrid (UC3M) and the Graz University of Technology (Austria) shows that an advertising campaign on Facebook can target a specific person, with ...
Dec 2, 2021
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9
Business
Hong Kongers travelling to China will need to download a tracking app similar to those used on the mainland, local officials said Thursday as they try to meet Beijing's strict coronavirus demands.
Dec 2, 2021
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26
Internet
Twitter launched new rules Tuesday blocking users from sharing private images of other people without their consent, in a tightening of the network's policy just a day after it changed CEOs.
Nov 30, 2021
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13
Business
The number of airline passengers traveling for Thanksgiving this year is expected to rebound to pre-coronavirus pandemic levels, but the Transportation Security Administration says it is ready to handle the surge.
Nov 17, 2021
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3
Business
Popular investing app Robinhood said Monday that it suffered a security breach last week where hackers accessed some personal information for roughly 7 million users and demanded a ransom payment.
Nov 9, 2021
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19
Security
A March cyberattack that shut down systems at Chicago-based insurance giant CNA exposed the personal information of thousands of employees, contractors and policyholders, the company revealed in a Securities and Exchange ...
Nov 3, 2021
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4
Business
Facebook is suing a Ukrainian programmer for allegedly scraping and selling publicly accessible information from millions of Facebook users.
Oct 25, 2021
0
5
A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational numbers, irrational numbers, and complex numbers.
Mathematical operations are certain procedures that take one or more numbers as input and produce a number as output. Unary operations take a single input number and produce a single output number. For example, the successor operation adds one to an integer, thus the successor of 4 is 5. Binary operations take two input numbers and produce a single output number. Examples of binary operations include addition, subtraction, multiplication, division, and exponentiation. The study of numerical operations is called arithmetic.
A notational symbol that represents a number is called a numeral. In addition to their use in counting and measuring, numerals are often used for labels (telephone numbers), for ordering (serial numbers), and for codes (e.g., ISBNs).
In common use, the word number can mean the abstract object, the symbol, or the word for the number.
This text uses material from Wikipedia, licensed under CC BY-SA
