SciDevNet: The variety of data generated every day -- from satellite images to people's geotagged photos of their breakfast -- is astonishing. The sheer quantity now being produced is hard to fathom: experts estimate that 90 per cent of all the digital data in the world has been generated over the last two years.
The term 'big data' refers to the information generated by the everyday use of digital services, produced so frequently, in such diverse ways and at scales so large that it cannot be stored or analysed...