Data ( /ˈdeɪtə/ DAY-tə, /ˈdætə/ DA-tə, or /ˈdɑːtə/ DAH-tə) are values of qualitative or quantitative variables, belonging to a set of items. Data in computing (or data processing) are often represented by a combination of items organized in rows and multiple variables organized in columns. Data are typically the results of measurements and can be visualised using graphs or images. Data as an abstract concept can be viewed as the lowest level of abstraction from which information and then knowledge are derived. Raw data, i.e., unprocessed data, refers to a collection of numbers, characters and is a relative term; data processing commonly occurs by stages, and the "processed data" from one stage may be considered the "raw data" of the next. Field data refers to raw data collected in an uncontrolled in situ environment. Experimental data refers to data generated within the context of a scientific investigation by observation and recording.

The word data is the plural of datum, neuter past participle of the Latin dare, "to give", hence "something given". In discussions of problems in geometry, mathematics, engineering, and so on, the terms givens and data are used interchangeably. Such usage is the origin of data as a concept in computer science or data processing: data are numbers, words, images, etc., accepted as they stand.

Usage in English[link]

In English, the word datum is still used in the general sense of "an item given". In cartography, geography, nuclear magnetic resonance and technical drawing it is often used to refer to a single specific reference datum from which distances to all other data are measured. Any measurement or result is a datum, but data point is more usual,^[1] albeit tautological. Both datums (see usage in datum article) and the originally Latin plural data are used as the plural of datum in English, but data is commonly treated as a mass noun and used with a verb in the singular form, especially in day-to-day usage. For example, This is all the data from the experiment. This usage is inconsistent with the rules of Latin grammar and traditional English (These are all the data from the experiment). Even when a very small quantity of data is referenced (one number, for example) the phrase piece of data is often used, as opposed to datum. The debate over appropriate usage is ongoing.^[2][3][4]

The IEEE Computer Society, allows usage of data as either a mass noun or plural based on author preference.^[5] Other professional organizations and style guides^[6] require that authors treat data as a plural noun. For example, the Air Force Flight Test Center specifically states that the word data is always plural, never singular.^[7]

Data is most often used as a singular mass noun in educated everyday usage.^[8][9] Some major newspapers such as The New York Times use it either in the singular or plural. In the New York Times the phrases "the survey data are still being analyzed" and "the first year for which data is available" have appeared within one day.^[10] In scientific writing data is often treated as a plural, as in These data do not support the conclusions, but it is also used as a singular mass entity like information. British usage now widely accepts treating data as singular in standard English,^[11] including everyday newspaper usage^[12] at least in non-scientific use.^[13] UK scientific publishing still prefers treating it as a plural.^[14] Some UK university style guides recommend using data for both singular and plural use^[15] and some recommend treating it only as a singular in connection with computers.^[16]

Meaning of data, information and knowledge[link]

The terms data, information and knowledge are frequently used for overlapping concepts. The main difference is in the level of abstraction being considered. Data is the lowest level of abstraction, information is the next level, and finally, knowledge is the highest level among all three.^[17] Data on its own carries no meaning. For data to become information, it must be interpreted and take on a meaning. For example, the height of Mt. Everest is generally considered as "data", a book on Mt. Everest geological characteristics may be considered as "information", and a report containing practical information on the best way to reach Mt. Everest's peak may be considered as "knowledge".

Information as a concept bears a diversity of meanings, from everyday usage to technical settings. Generally speaking, the concept of information is closely related to notions of constraint, communication, control, data, form, instruction, knowledge, meaning, mental stimulus, pattern, perception, and representation.

Beynon-Davies uses the concept of a sign to distinguish between data and information; data are symbols while information occurs when symbols are used to refer to something.^[18]

It is people and computers who collect data and impose patterns on it. These patterns are seen as information which can be used to enhance knowledge. These patterns can be interpreted as truth, and are authorized as aesthetic and ethical criteria. Events that leave behind perceivable physical or virtual remains can be traced back through data. Marks are no longer considered data once the link between the mark and observation is broken.^[19]

Mechanical computing devices are classified according to the means by which they represent data. An analog computer represents a datum as a voltage, distance, position, or other physical quantity. A digital computer represents a datum as a sequence of symbols drawn from a fixed alphabet. The most common digital computers use a binary alphabet, that is, an alphabet of two characters, typically denoted "0" and "1". More familiar representations, such as numbers or letters, are then constructed from the binary alphabet.

Some special forms of data are distinguished. A computer program is a collection of data, which can be interpreted as instructions. Most computer languages make a distinction between programs and the other data on which programs operate, but in some languages, notably Lisp and similar languages, programs are essentially indistinguishable from other data. It is also useful to distinguish metadata, that is, a description of other data. A similar yet earlier term for metadata is "ancillary data." The prototypical example of metadata is the library catalog, which is a description of the contents of books.

See also[link]

References[link]

This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.

External links[link]

Look up data in Wiktionary, the free dictionary.

• Data is a singular noun (a detailed assessment)

Hans Rosling
Rosling at the 2012 Time 100 gala
Born	(1948-07-27) July 27, 1948 (age 63)
Institutions	Karolinska Institute
Alma mater	Uppsala University, St. John's Medical College
Known for	Gapminder Foundation and Trendalyzer

Hans Rosling (born 27 July 1948^[1] in Uppsala, Sweden) is a Swedish medical doctor, academic, statistician and public speaker. He is Professor of International Health at Karolinska Institute^[2] and co-founder and chairman of the Gapminder Foundation, which developed the Trendalyzer software system.

Study and career[link]

From 1967 to 1974 Rosling studied statistics and medicine at Uppsala University, and in 1972 he studied public health at St. John's Medical College, Bangalore. He became a licenced physician in 1976 and from 1979 to 1981 he served as District Medical Officer in Nacala in northern Mozambique.

On 21 August 1981, Rosling discovered an outbreak of konzo, a paralytic disease,^[3][4] and the investigations that followed earned him a Ph.D. degree at Uppsala University in 1986. He spent two decades studying outbreaks of this disease in remote rural areas across Africa and supervised more than ten Ph.D. students^{[citation needed]}. Outbreaks occur among hunger-stricken rural populations in Africa where a diet dominated by insufficiently processed cassava results in simultaneous malnutrition and high dietary cyanide intake.^[4]

Rosling's research has also focused on other links between economic development, agriculture, poverty and health^[5] in Africa, Asia and Latin America. He has been health adviser to WHO, UNICEF and several aid agencies. In 1993 he was one of the initiators of Médecins Sans Frontières in Sweden. At Karolinska Institutet he was head of the Division of International Health (IHCAR) from 2001 to 2007. As chairman of Karolinska International Research and Training Committee (1998–2004) he started health research collaborations with universities in Asia, Africa, the Middle East and Latin America. He started new courses on Global Health and co-authored a textbook on Global Health that promotes a fact-based world view.

Rosling presented the television documentary The Joy of Stats, which was broadcast in the United Kingdom by BBC Four in December 2010.^[6]

Gapminder[link]

Rosling co-founded the Gapminder Foundation together with his son Ola Rosling and daughter-in-law Anna Rosling Rönnlund. Gapminder developed the Trendalyzer software that converts international statistics into moving, interactive graphics. His lectures using Gapminder graphics to visualise world development have won awards.^[7] The interactive animations are freely available from the Foundation's website. On 16 March 2007 Google acquired the Trendalyzer software with the intention to scale it up and make it freely available for public statistics. In 2008 Google made available a Motion Chart Google Gadget and in 2009 the Public Data Explorer.^[8]

Rosling is also a sword swallower, as demonstrated in the final moments of his second talk at the TED conference.^[9] In 2009 he was listed as one of 100 leading global thinkers by Foreign Policy Magazine,^[10] and in 2011 as one of 100 most creative people in business by the Fast Company Magazine.^[11] In 2011 he was elected member of the Swedish Academy of Engineering Sciences.

Awards[link]

Hans Rosling at the Swedish pavilion of Expo 2010 in Shanghai

• 2007 – Statistician of the Year Award from the Swedish Association for Statistics
• 2007 – Jubilee Prize from the Swedish Medical Society
• 2007 – Knowledge Prize from the National Encyclopaedia of Sweden
• 2008 – Speaker of the Year from the Swedish Event Academy
• 2008 – The Big Debate Award from Dagens Medicine
• 2009 – Georg and Greta Borgstrom Award from the Swedish Royal Academy of Agriculture and Forestry
• 2010 – Illis Quorum, Highest Award conferred by the Government of Sweden
• 2010 – The Grand Prize from the Royal Institute of Technology, Stockholm, Sweden
• 2010 – Gold Medal from Royal Swedish Academy of Engineering Sciences
• 2010 – World Technology Award in Design together with Ola Rosling & Anna Rosling Rönnlund
• 2010 – The Gannon Award for the Continued Pursuit of Human Advancement (US)^[12]
• 2011 - Grierson 2011 Award for the Best British Science Documentary, presenter in "The Joy of Stats"
• 2012 - Time 100 most influential people list

Selected publications[link]

• Thorson, A.; Ragnarsson, A.; Rosling, H.; Ekström, A. (2010). "Male circumcision reduces HIV transmission. The risk of transmission from woman to man is halved". Lakartidningen 107 (46): 2881–2883. PMID 21197783.  edit
• Hanson, S.; Thorson, A.; Rosling, H.; Örtendahl, C.; Hanson, C.; Killewo, J.; Ekström, A. M. (2009). Husereau, Don. ed. "Estimating the Capacity for ART Provision in Tanzania with the Use of Data on Staff Productivity and Patient Losses". PLoS ONE 4 (4): e5294. DOI:10.1371/journal.pone.0005294. PMC 2667213. PMID 19381270. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2667213.  edit
• Von Schreeb, J.; Riddez, L.; Samnegård, H.; Rosling, H. (2008). "Foreign field hospitals in the recent sudden-onset disasters in Iran, Haiti, Indonesia, and Pakistan". Prehospital and disaster medicine : the official journal of the National Association of EMS Physicians and the World Association for Emergency and Disaster Medicine in association with the Acute Care Foundation 23 (2): 144–151; discussion 151–3. PMID 18557294.  edit
• Schell, C. O.; Reilly, M.; Rosling, H.; Peterson, S.; Ekström, A. M. (2007). "Socioeconomic determinants of infant mortality: A worldwide study of 152 low-, middle-, and high-income countries". Scandinavian Journal of Public Health 35 (3): 288–297. DOI:10.1080/14034940600979171. PMID 17530551.  edit
• Von Schreeb, J.; Rosling, H.; Garfield, R. (2007). "Mortality in Iraq". The Lancet 369 (9556): 101. DOI:10.1016/S0140-6736(07)60058-0. PMID 17223462.  edit
• Elrayah, H.; Eltom, M.; Bedri, A.; Belal, A.; Rosling, H.; Ostenson, C. (2005). "Economic burden on families of childhood type 1 diabetes in urban Sudan". Diabetes Research and Clinical Practice 70 (2): 159–165. DOI:10.1016/j.diabres.2005.03.034. PMID 15919129.  edit
• Thanh, H. T. T.; Jiang, G. X.; Van, T. N.; Minh, D. P. T.; Rosling, H.; Wasserman, D. (2005). "Attempted suicide in Hanoi, Vietnam". Social Psychiatry and Psychiatric Epidemiology 40 (1): 64–71. DOI:10.1007/s00127-005-0849-6. PMID 15624077.  edit
• Rosling, H. (2004). "New map of world health is needed. North and South is changed to healthy and ill and West to rich and poor". Lakartidningen 101 (3): 198–201. PMID 14763091.  edit

References[link]

Wikiquote has a collection of quotations related to: Hans Rosling

External links[link]

• Hans Rosling on Twitter
• Hans Rosling shows the best stats you've ever seen at the 2006 TED Conference in Monterey, CA highlighting novel ways of presenting global statistics.
• Hans Rosling's new insights on poverty, from TED2007, featuring a surprise ending. (video)
• Video of Hans Rosling speech at the OECD World Forum in Istanbul
• Hans Rosling's blog
• Ola Rosling giving a Gapminder presentation at Google (video)
• Motion Chart Google Gadget
• Hans Rosling: Global health expert; data visionary profile on TED.com

Dan Bull
Dan Bull at the Digital Economy Bill demonstrations in London, 24 March 2010
Background information
Birth name	Daniel Bull
Also known as	Douglby, Dan Bull
Born	(1986-03-27) March 27, 1986 (age 26) Bromsgrove, Worcestershire, England
Origin	Bromsgrove, Worcestershire, England
Genres	Hip hop
Occupations	Rapper, songwriter
Years active	2006–present
Labels	Unsigned
Website	itsdanbull.com

Dan Bull is an English rapper and songwriter known for his politically orientated lyrics and specific addressing of high profile figures in his music. His music has been featured in the British press as part of attempts to save BBC Radio 6,^[1][2] campaign against the Digital Economy Bill,^[3] and protest in favour of filesharing.^[4]

Musical career[link]

[edit] 2006 - Present: Other Work (Youtube)

Dan Bull has released songs on subjects such as digital rights, the music industry, and gaming.^[5][6][7] Bull's actions have gained attention, specifically from the TalkTalk Group who requested to team up with him against the Digital Economy Bill.^[8]

Gaming Raps

Dan has acquired many of his fans through the creation of gaming raps. He has created songs about Grand Theft Auto V, Minecraft, Assassin's Creed, Star Wars: The Old Republic, Modern Warfare, Mass Effect, League of Legends, and Skyrim. The Epic Skyrim Rap is his most popular video, with over 4.5 million views.

[edit] 2009: Safe

Safe tells the story of a young man who attempts suicide at the same time as a global thermonuclear holocaust and awakens in a new, ambiguous nirvana. Along the way, Dan Bull covers such topics as summer sunshine, friendship, love and loss, alienation, politics, death, religion, suicide and insanity.^{[9][unreliable source?]}

[edit] 2011: Face

Bull announced via his blog that the upcoming album would be available in early 2011. Stating that: "It’s going to be a continuation of the narrative of my first album, but will have a very different feel and mood overall."^[10] The album focuses on topics such as medical recovery, war, love, Asperger's syndrome, alcoholism, and pride. Face was released in December 2011. The 12-track album includes ten brand new songs as well as the 2010 tracks America and John Lennon.

[edit] 2012: Sharing is caring

Dan Bull announced via his website that he was aiming to get into the UK and Global charts with his new track "Sharing is caring." He offered it on iTunes, Play.com, Amazon and on torrent via The Pirate Bay. To people who bought all 10 versions of his track, they would be thanked in a music video of his, given that they notify him with sufficient proof. The lyrical content in the different versions of his track were targeted at popular social networking sites, Facebook, Twitter. and Google+. He also offered the instrumental by itself, voice only versions, and remixes of each track.^[11] The Animal Circus remix reached the top of the Reggae charts on Amazon UK, and second place in the World category.^[12]

Discography[link]

Studio albums

• Safe (2009)
• Face (2011)

Videos[link]

• Dear Lily (2009)
• Doorways (2009)
• Free Gary (2009)
• Generation Gaming (2009)
• Dear Andy (2010)
• Dear Mandy (2010)
• Death of ACTA (2010)
• Dear Auntie (2010)
• SOPA Cabana (2011)
• Bye Bye BPI (2012)

References[link]

External links[link]

• Official website
• YouTube