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How Much Information? 2009

How Much Information? 2009. Roger E. Bohn James E. Short Presented by Eun -Sol Kim. 1. Introduction - notation. 1. Introduction – the scope of the information . 1.3 How many hours?. INFO H : hours spent receiving information

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How Much Information? 2009

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  1. How Much Information? 2009 Roger E. Bohn James E. Short Presented by Eun-Sol Kim

  2. 1. Introduction - notation

  3. 1. Introduction – the scope of the information

  4. 1.3 How many hours? INFOH : hours spent receiving information How much time Americans spend with different sources of information. An average American on an average day receives 11.8 hours of information a day.

  5. 1.4 How many words? • 4,500 trillion words consumed in 1980 (Pool) • 10,845 trillion words consumed in 2008 • 100,000 words per American per day

  6. 1.5 How many bytes? • Moving pictures dominate all other types of consumer information. • Only three activities contribute a significant amount of information based on INFOC : • TV, Computer games, Movies in theaters • 34 gigabytes (3.4*10^10 bytes) per day in 2008, • 34 gigabytes = 7 DVD disks = 1.5 Blu-ray disks

  7. 1.5 How many bytes?

  8. 1.6 Storage vs. Consumption • This paper measured data as information each time consumers use it. • Stored data is not necessarily information. • The data ‘footprint’ of a storage device is not just how many bytes it holds, but how many bytes are created over time.

  9. 2. Traditional information in U.S. households • Information • In households and mobile uses • Information for consumption • In workplaces and between machines • Information for production

  10. 2.1 Television • TV is the largest source. • TV usage measured in hours per person is rising only slowly.

  11. 2.2 Radio • Thriving on new technology • HD audio, satellite transmission, online radio.. • But audio requires very low data rates in census. • HDTV requires 30 times more than audio. • 233 million radio listeners • 10 exabytes of information in 2008

  12. 2.3 Telephone • 143 million wired lines in 2008 • 263 million wireless users • Average wired lines : twice as many minutes per day • > information words are slightly higher for fixed lines. • Total time consuming information • Wire : wireless = 3.2 percent : 2.9 percent • 1 household uses home phone for 22.5 hours each month • Total voice traffic by wired phone in 2008: 1.2 exabytes • Total voice traffic with wire and wireless : 1.4 exabytes

  13. 2.4 Print • 5% in INFOH, 9% in INFOW, 0.02% in INFOC • E-book have already taken over for paper

  14. 3. Computer information in U.S. households • 10 years ago • 40% had a PC, 24% had Internet access • Now • 70% had a PC with Internet access • 80% with smartphone devices • One households has dozens of digital devices for entertainment, information and so on. • 3G phones, PDAs, MP3 players, TV, PC, game devices….

  15. 3.1 Communicating and browsing the internet • In 1980s • No email, fax • Today • 220 million Americans spend 14% of their INFOH on the internet • Email : the most widely used application (35%) • Americans spent fewer hours on web browsing ( 30% of the Internet time) • Most users spend 8-9 seconds looking at most web pages. • Find the page of interest, change their minds, get bored/shift to another task.

  16. 3.2 Internet video • This article measured internet video such as YouTube • 95 million viewers • Average viewing time : less than 2 hours per months • Internet video is still small • INFOH : 0.2% of the total • INFOC : under 1 exabyte • Because the speed of the pope into the house limits how much can be received while the consumer is actively trying to watch.

  17. 3.3 Computer Gaming • Computer gaming has come to dominate the total number of information bytes : nearly 2 zettabytes in 2008 (55%) • Total of consuming hours less than 8% • Total of consuming words about 2.5 % • 70% of adults played computer games, less than one hour a day

  18. 3.4 Off-internet home computer use3.5 Smart phones • Off-line use • Updating a resume, editing photos, running a household finance program • Only 17 minutes per day per average American. • Almost text based, 0.7 exabytes per year • Smart phones • In 2008, 263 millions American carry cell phones • 50 millions American carry smartphones • American spent 7 billion hours text messaging

  19. 4. Trends, Perspectives and the future of U.S. information consumption 4.1 Analyzing the growth of information • In INFOC point of view • 5-fold increase from 1980 to 2008 • Annual growth rate : 5.4% • cf ) the Moore’s Law • Three components of the information consumption • Population : grew at 0.95% per year • Average hours per person spent consuming info : grew at 1.7% per year ( 7.4 h to 11.8 h ) • Average information per hour • Average bandwidth ( information intensity ): grew at 2.8 % per year ( 2.9 Mbps to 6.4 Mbps ) • Gigabytes per person per day : grew at 4.4 %

  20. 4.2 Where are the missing bytes?

  21. 4.3 Analyzing information consumption

  22. 4.4 The future of consumer information • The most visible is shifts in TV • To digital broadcasting, the mass acceptance of high definition TV sets, digital video recorders • Mobile TV, video over the internet • Computer games

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