Computer Sciences

Can we trust scientific discoveries made using machine learning?

Rice University statistician Genevera Allen says scientists must keep questioning the accuracy and reproducibility of scientific discoveries made by machine-learning techniques until researchers develop new computational ...

Computer Sciences

DeepCrack: a new hierarchical CNN-based method for crack segmentation

Detecting and analyzing cracks in man-made structures is an important task that can help to ensure that buildings are safe and well-maintained. As employing human workers to inspect buildings regularly can be very expensive, ...

Engineering

GPU news: Time for another go at waferscale computer

Researchers at the University of Illinois at Urbana-Champaign and the University of California, Los Angeles, are behind the recent development for a wafer-scale computer that aims to be faster, more energy efficient, than ...

Security

VeryMal: Campaign in image-based malware spotted

By this time, news stories have made words like bugs, viruses and malware familiar and by all means frequent, as computer users scramble to self-educate on how to avoid falling victim to a range of security invasions.

Engineering

New digital-camera-based system can 'see' around corners

What if your car possessed technology that warned you not only about objects in clear view of your vehicle—the way that cameras, radar, and laser can do now in many standard and autonomous vehicles—but also warned you ...

Engineering

Reinforcement learning expedites 'tuning' of robotic prosthetics

Researchers from North Carolina State University, the University of North Carolina and Arizona State University have developed an intelligent system for "tuning" powered prosthetic knees, allowing patients to walk comfortably ...

Software

Where is George? Ask this software to look at the crowd

George is a zebrafish. Along with Tom and 98 other mates, George swims freely in a laboratory tank at the Champalimaud Centre for the Unknown (CCU), in Lisbon, Portugal. A camera records from above a video of all the animals' ...

Machine Learning & AI

A new algorithm for solving archaeological puzzles

A team of researchers at Technion and the University of Haifa have developed a new computer vision approach for solving archaeological puzzles. In their paper, pre-published on arXiv, they introduce a general algorithm that ...

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Computer

A computer is a machine that manipulates data according to a set of instructions.

Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs). Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.

The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a mobile phone to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.

This text uses material from Wikipedia, licensed under CC BY-SA