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Reference is a relation between objects in which one object designates, or acts as a means by which to connect to or link to, another object. The first object in this relation is said to refer to the second object. The second object – the one to which the first object refers – is called the referent of the first object.

The term reference is used in many spheres of human knowledge, adopting shades of meaning particular to the contexts in which it is used.

References can take on many forms, including: a thought, a sensory perception that is audible (onomatopoeia), visual (text), olfactory, or tactile, emotional state, relationship with other,^[1] spacetime coordinate, symbolic or alpha-numeric, a physical object or an energy projection; but, other concrete and abstract contexts exist as methods of defining references within the scope of the various fields that require an origin, point of departure, or an original form. This includes methods that intentionally hide the reference from some observers, as in cryptography.

The following sections give specific usages of reference in different subjects.

Etymology[link]

The word reference is derived from Middle English referren, from Middle French référer, from Latin referre, "to carry back", formed from the prefix re- and ferre, "to bear".^[2] A large number of words derive from this root, including referee, referent, referendum, all retaining the basic meaning of the original Latin as "a point, place or source of origin" in terms of which something of comparable nature can be defined. A referee is the provider of this source of origin, and a referent is the possessor of the source of origin, whether it is knowledge, matter or energy.

Computer science[link]

In computer science, references are data types that refer to an object elsewhere in memory and are used to construct a wide variety of data structures, such as linked lists. Generally, a reference is a value that enables a program to directly access the particular data item. Most programming languages support some form of reference.

The C++ programming language has a specific type of reference also referred to as a "reference"; see reference (C++).

Bibliographies[link]

Bibliographies are special reference works that are used to identify as many published works on a given subject as possible, and serve as compilations for other authors or researchers.

Library and information sciences[link]

In a library, "reference" may refer to a dictionary, an encyclopedia or other reference work, that contains many brief articles that cover a broad scope of knowledge in one book, or a set of books. However, the word reference is also used to mean a book that cannot be taken from the room, or from the building. Many of the books in the reference department of a library are reference works, but some are books that are simply too large or valuable to loan out. Conversely, selected reference works may be shelved with other circulating books, and may be loaned out.

References to many types of printed matter may come in an electronic or machine-readable form. For books, there exists the ISBN and for journal articles, the Digital object identifier (DOI) is gaining relevance. Information on the Internet may be referred to by a Uniform Resource Identifier (URI).

Librarians also conduct reference interviews at the library reference desks, to help people find the information they seek. Help may also be available outside the library though virtual reference and digital reference services.

Encyclopedias & books of facts[link]

Some published sources are produced as reference works that allow quick access to essential information about given subjects, sometimes compiled as topical collections, and sometimes as general collections of entries.

Psychology[link]

In terms of mental processing, a self-reference is used in psychology to establish identification with a mental state during self-analysis. This seeks to allow the individual to develop own frames of reference in a greater state of immediate awareness. However, it can laso lead to circular reasoning, preventing evolution of thought.^[3]

Economics and business[link]

In the labour market, potential employers often ask job applicants for references or recommendations, so that their suitability can be verified independently. The references can be a written letter, but are often just a contact telephone number. Employers can ask for professional references, which are from former employers, or for character references, which are from people of distinction such as doctors or teachers. The source of the reference must be well known to the applicant and able to vouch for their abilities during employment.

In business administration, terms of reference describe the purpose and structure of a project, committee, meeting, negotiation, or any similar collection of people who have agreed to work together to accomplish a shared goal. The terms of reference of a project are often referred to as the project charter.

Education[link]

In academics and scholarship, an author-title-date information in bibliographies and footnotes, specifying complete works of other people. Copying of material by another author without proper citation or without required permissions is plagiarism.

Keeping a diary allows an individual to use references for personal organization, whether or not anyone else understands the systems of reference used. However, scholars have studied methods of reference because of their key role in communication and co-operation between different people, and also because of misunderstandings that can arise. Modern academic study of reference has been developing since the 19th Century.^[4]

In scholarship, a reference may be a citation of a text that has been used in the creation of a piece of work such as an essay, report, or oration. Its primary purpose is to allow people who read such work to examine the author's sources, either for validity or to learn more about the subject. Such items are often listed at the end of an article or book in a section marked "Bibliography" or "References". A bibliographical section often contains works not cited by the author, but used as background reading or listed as potentially useful to the reader. A reference section contains all of the works and only those works cited by the author(s) in the main text.

Law[link]

In law, references are documents or people providing witness to character. This connotation is also used in employment.

In patent law, a reference is a document that can be used to show the state of knowledge at a given time and that therefore may make a claimed invention obvious or anticipated. Examples of references are patents of any country, magazine articles, Ph.D. theses that are indexed and thus accessible to those interested in finding information about the subject matter, and to some extent Internet material that is similarly accessible.

In Canadian law, a reference question is a procedure through which the government can submit legal questions to the Supreme Court of Canada and provincial governments to the provincial courts of appeal.

Semantics[link]

In semantics, reference is generally construed as the relationships between nouns or pronouns and objects that are named by them. Hence, the word "John" refers to John. The word "it" refers to some previously specified object. The object referred to is called the "referent" of the word.^[5] Sometimes the word-object relation is called "denotation"; the word denotes the object. The converse relation, the relation from object to word, is called "exemplification"; the object exemplifies what the word denotes. In syntactic analysis, if a word refers to a previous word, the previous word is called the "antecedent".

Meaning[link]

Gottlob Frege argued that reference cannot be treated as identical with meaning: "Hesperus" (an ancient Greek name for the evening star) and "Phosphorus" (an ancient Greek name for the morning star) both refer to Venus, but the astronomical fact that '"Hesperus" is "Phosphorus"' can still be informative, even if the "meanings" of "Hesperus" and "Phosphorus" are already known. This problem led Frege to distinguish between the sense and reference of a word. Some cases seem to be too complicated to be classified within this framework; the acceptance of the notion of secondary reference may be necessary to fill the gap.

Absent referent[link]

Words can often be meaningful without having a concrete here-and-now referent. Fictional and mythological names such as "Bo-Peep" and "Hercules" illustrate this possibility. Sign links with absent referents also allow for discussing abstract ideas ("love," "peace") as well as people and events of the past and future.

For those who argue that one cannot directly experience the divine (e.g. God), the sign "God" can serve as an example of a reference with an absent referent. Additionally, certain sects of Judaism and other religions consider it sinful to write, discard, or deface the name of the divine. To avoid this problem, the signifier G-d is sometimes used, though this could be seen as a sign that refers to another sign with an absent referent.

Linguistic sign[link]

Certain parts of speech exist only to express reference, namely anaphora such as pronouns. The subset of reflexives expresses co-reference of agent (actor) and patient (acted on), as in "The man washed himself".

Mathematics[link]

In mathematics, the absent referent can be seen with the symbol for zero, "0" or the empty set, "{ }".

A reference point in Geometry is a location used to describe another point, by giving the relative position. Similarly there is the concept of frame of reference (both in physics and figuratively) and benchmark (in surveying and figuratively).

Engineering[link]

In engineering a reference design is often used during the pre-production phase of design development to test design features against original specifications.

Arts[link]

In Art, a reference is an item from which a work is based. This may include:

• an existing artwork,
• a reproduction (i.e., photo),
• directly observed object (i.e., person), or
• the artist's memory.

Another example of reference is samples of various musical works being incorporated into a new one.

Literature and rhetoric[link]

In academic literature, a reference is a previously published written work within academic publishing that has been used as a source for theory or claims referred to that are used in the text. References contain complete bibliographic information so the interested reader can find them in a library. References can be added either at the end of the publication or as footnotes.

In publishing, a reference is citation of a work, in a footnote, from which an idea was taken.

See also[link]

• Antecedent (grammar)
• Exemplification
• Generic antecedent
• Hyperlink
• ISO 690

References[link]

External links[link]

Look up reference in Wiktionary, the free dictionary.

• Reference.com – a multi-source encyclopedia search service, and language reference products provider
• References.net – a directory of multidisciplinary reference resources on the web
• Reference Resources – reference related websites in the Yahoo! Directory
• Refmuseum.com - The online museum of references

Mobb Deep is an American Hip-Hop duo from Queensbridge, Queens, New York, U.S.,^[1] that consists of Havoc and Prodigy. The duo is "one of the most critically acclaimed hardcore East Coast Hip-Hop groups".^[2] The group is best known for its dark, hardcore delivery as exemplified by the single "Shook Ones Pt. II".^[3] Mobb Deep have become one of the most successful rap duos in Hip Hop having sold over three million records.^[2] The majority of their albums have been critically acclaimed, in particular The Infamous in which is considered to be classic among avid Hip-Hop listeners and general fans.^[4][5] They are partially credited for the resurgence of East Coast rap in the early to mid-'90s. Havoc and Prodigy were also judges for the 7th Annual Independent Music Awards to support independent artists' careers and breakthroughs.^[6]

Biography[link]

Origins[link]

Havoc and Prodigy supposedly started their career in music in 1986 and they both attended the High School of Art and Design in New York City. Havoc took the role of kurwa and as secondary musician/rapper while Prodigy assumed the position of primary musician/rapper. Originally dubbing themselves the Poetical Profits, the duo later changed its name to Mobb Deep in order to "reflect their reputation on the streets."^[7] It is rumored that before the groups initial career beginnings, Prodigy was at the age of fifteen when he was featured on the classic movie soundtrack Boyz In The Hood in a track call Too Young. In June 1991, when Havoc and Prodigy were at the age of seventeen they released their debut album as they self-titled, Juvenile Hell which was promoted by the single "Peer Pressure." The album sold poorly and eventually met with harsh reviews that dismissed the duo as just another hardcore group with little to distinguish it from the rest of the hip-hop world, despite production by DJ Premier and Large Professor. However, a few songs from Juvenile Hell had gain recognition such as; "Hit It from the Back," "Locked in Spofford" and "Me and My Crew." Moreover, in 1993 Havoc attended a show as a guest appearance on the critically acclaimed Black Moon album Enta Da Stage on a song titled "U Da Man." In 1994 the duo released a single titled "Shook Ones Part 1", which contained verses that later were incorporated into their most commercially successful song, "Shook Ones Part 2".

Rise to Success[link]

The group saw its first major success with their second album, The Infamous released in 1995. Mobb Deep catapulted to the top of the hardcore hip-hop scene through Havoc and Prodigy's straightforward narration of street life. In this album, Mobb Deep portrayed the struggles of living in New York City's Queensbridge Houses where they grew up. Following the release of The Infamous, Mobb Deep became some of the most prolific artists of the East Coast in regards to the hardcore Hip Hop sub-genre. The production of this album was very dark and sample-based thanks to Havoc, who produced the beats almost exclusively throughout Mobb Deep's career.^[8] Furthermore, the smash hit single "Shook Ones Pt. II" received critical acclaim and was well-received within the Hip Hop community.

Mobb Deep's third album, Hell on Earth was released in 1996 debuting at number six on the Billboard Album Chart; the album continued the duo's portrayal of harsh street life while further pushing them to the forefront of the hardcore Hip Hop scene along with contemporary East Coast Rappers like The Notorious B.I.G., Wu-Tang Clan collective, Jay-Z and fellow Queensbridge Associate Nas. Both Method Man and Raekwon of the Wu Tang Clan appear on 'Hell on Earth'.

In 1996, they appeared on the Red Hot Organization's compilation CD, America is Dying Slowly alongside Biz Markie, Wu-Tang Clan and Fat Joe among many other prominent Hip Hop artists. This compilation was solely meant to raise awareness of the AIDS epidemic among African American men and this compilation was heralded as "a masterpiece" by The Source Magazine, a Hip Hop Publication. In 1998, the duo collaborated with a reggae dancehall rapper named, Bounty Killer on the track "Deadly Zone" for the soundtrack to Blade. In 1999, they released the highly anticipated Murda Muzik album in which despite extensive bootlegging, the majority of its songs were unintentionally leaked which resulted in delays in the official album release. When the album officially released it eventually debuted at number three on the Billboard 200 and quickly received Platinum Certification and further promoted by the popular single "Quiet Storm." Shortly afterward, Prodigy released his long-awaited solo album H.N.I.C in which the artist collaborated with fellow artist on the likes of, (B.G. and N.O.R.E.) and lastly, producers (including The Alchemist, Rockwilder, and Just Blaze).

East Coast vs. West Coast National Feud[link]

Mobb Deep was part of the infamous East Coast vs West Coast Hip Hop rivalry that was fueled and increasingly promoted by the private media. The beef started when Snoop Dogg and the West Coast group, Tha Dogg Pound released "New York, New York" which Mobb Deep, along with Capone-N-Noreaga and Tragedy Khadafi responded with the song "L.A L.A" (This song can be found on Capone-N-Noreaga's debut album The War Report). This song was released during rapper 2Pac's final days of incarceration. Members of 2Pac's group, Outlawz, allegedly attended a Mobb Deep concert; they then visited with 2Pac over public rumoring that the duo had snubbed them at the concert. 2Pac dissed Mobb Deep on multiple tracks, including: "Hit 'Em Up" and "When We Ride on Our Enemies" in which 2Pac makes light of Prodigy's sickle-cell disease. Additional 2Pac diss tracks include: "Bomb First (My Second Reply)" and "Against All Odds", both of which were released on 2Pac's posthumous studio album, The Don Killuminati: The 7 Day Theory. Mobb Deep retaliated on their 1996 release of Hell on Earth, which contains a diss track entitled "Drop A Gem On 'Em."

2000 to 2010[link]

Mobb Deep released Infamy while in 2001 the song "Burn" (featuring Vita) was perceived as a response to Jay-Z's diss song "Takeover" on The Blueprint, as was "Crawlin'," in which Prodigy's two verses both mention Jay-Z. The album marked a major stylistic change in which the duo moved away from a raw, minimalist, stripped-down beat toward a commercial friendly in terms with such songs as "Hey Luv (Anything)." This transition fostered accusations of "selling out". The eventually led the group's fanbase upset and many long-time fans who did not wish to see them veer away from their original style eventually lost some interest in their music. Although these stylistic adjustments opened up by Mobb Deep to a wider audience, many critics and fans consider their style change as a detriment to Mobb Deep's street image and record sales (most evident when comparing the platinum-selling Murda Muzik to Infamy which struggled to attain gold-record status). In 2003, the group split with Loud Records and released Free Agents: The Murda Mix Tape, in which Havoc and Prodigy proclaimed themselves "free agents" and addressed the group's split with its old label and its search for a new label. Jive Records signed the duo later in the year through a deal with the group’s own imprint. Mobb Deep then released Amerikaz Nightmare in 2004 which was seen by the general hip-hop audience as an "weaker release"; this resulted in poor sales and the group’s subsequent departure from the label.^[9] Today, as a result of various mergers, all of Mobb Deep's studio albums from 1995 to 2004 are owned by Sony Music Entertainment.

G-Unit Records[link]

In June 2005, Prodigy and Havoc announced they had signed with 50 Cent's label G-Unit Records. The move was surprising among Hip Hop fans because 50 Cent had ridiculed the group in his song "Piggy Bank". 50 Cent had a connection to Mobb Deep as he grew up in Queens and Havoc had provided production on projects by G-Unit, Lloyd Banks and Tony Yayo. The relationship strengthened as Prodigy and 50 Cent each received tattoos to pledge their loyalty to each other. Prodigy has the word "G-Unit" tattooed on the side of his right hand and 50 Cent has "Mobb Deep" tattooed on his wrist. As part of their contract with G-Unit, both Prodigy and Havoc were given new Porsches. Later, Mobb Deep signed different artists onto Infamous/G-Unit Records including Nyce, 40 Glocc and Gail Gotti. Mobb Deep released their eighth album, Blood Money in 2006. It features G-Unit members 50 Cent, Lloyd Banks, Tony Yayo and Young Buck as well as Mary J. Blige and Nate Dogg. In 2006, Mobb Deep became the first American hip-hop duo to perform in India, via VH1's Hip Hop Hustle. It performed in a nightclub called Enigma. In late 2009, Mobb Deep were released from their contract with 50 Cent's G-Unit label.

2011 to Present Day[link]

On April 4, 2011 a possible new Mobb Deep single leaked on the internet named "Dog Shit", this song features rapper Nas as its collaborator. This is the first official song by Mobb Deep since Prodigy made his return from jail and their first consensual collaboration with Nas in nearly ten years due to their feud (Except member Prodigy & Nas appearing on producer The Alchemist's album 1st Infantry, on song "Tick Tock"). It is produced by Havoc and Alchemist. In the longrun of their relationship, they are also recording an upcoming, self titled album (which will be their ninth studio album) with production from Havoc, The Alchemist, Sid Roams, DJ Premier, MTK, Cardiak and the J.U.S.T.I.C.E. League as well as other guest artists such as; Rick Ross, Lil' Kim, Wiz Khalifa, Odd Future and Nas on their new album.^[10] On November 21, 2011, the duo released an EP called Black Cocaine which is an EP promoting their LP which is rumored to be released in the Year of 2012.^[11]

Discography[link]

References[link]

External links[link]

• Mobb Deep on Myspace
• Interview with Prodigy - Prodigy Interview of 2006, Hip Hop Publication
• Prodigy Interview of 2007, Hip Hop Publication