NationMaster - Encyclopedia: Frank Rosenblatt

Frank Rosenblatt (1928–1969) was a New York City born computer scientist who completed the Perceptron, or MARK 1, computer at Cornell University in 1960. This was the first computer that could learn new skills by trial and error, using a type of neural network that simulates human thought processes. 1928 (MCMXXVIII) was a leap year starting on Sunday (link will take you to calendar). ... 1969 (MCMLXIX) was a common year starting on Wednesday (the link is to a full 1969 calendar). ... Nickname: Big Apple Location in the state of New York Coordinates: Country United States State New York Boroughs Bronx (The Bronx) New York (Manhattan) Queens (Queens) Kings (Brooklyn) Richmond (Staten Island) Mayor Michael Bloomberg (R) Area - City 1,214. ... The perceptron is a type of artificial neural network invented in 1957 at the Cornell Aeronautical Laboratory by Frank Rosenblatt. ... Cornell redirects here. ... 1960 (MCMLX) was a leap year starting on Friday (the link is to a full 1960 calendar). ... A Lego RCX Computer is an example of an embedded computer used to control mechanical devices. ... Simplified view of an artificial neural network A neural network is a system of interconnecting neurons in a network working together to produce an output function. ...

Rosenblatt’s perceptrons were initially simulated on an IBM 704 computer at Cornell Aeronautical Laboratory in 1957. By the study of neural networks such as the Perceptron, Rosenblatt hoped that "the fundamental laws of organization which are common to all information handling systems, machines and men included, may eventually be understood." Cornell Aeronautical Laboratory (now Calspan Corporation) was originally founded in 1943 as part of the Research Laboratory of the Curtiss-Wright Airplane Division at Buffalo, N.Y. It operated as the Cornell Aeronautical Laboratory from 1946 until 1972 when Cornell University sold public stock in the lab and set it...

Rosenblatt was a colorful character at Cornell in the early 1960s. A handsome bachelor, he drove a classic MGA sports car and was often seen with his cat named Tobermory. He enjoyed mixing with undergraduates, and for several years taught an interdisciplinary undergraduate honors course entitled "Theory of Brain Mechanisms" that drew students equally from Cornell's Engineering and Liberal Arts colleges. Tobermory is the name of several towns. ...

This course was a melange of ideas drawn from a huge variety of sources: results from experimental brain surgery on epileptic patients while conscious, experiments on measuring the activity of individual neurons in the visual cortex of cats, studies of loss of particular kinds of mental function as a result of trauma to specific areas of the brain, and various analog and digital electronic circuits that modeled various details of neuronal behavior (i.e. the perceptron itself, as a machine). In medicine, a trauma patient has suffered serious and life-threatening physical injury resulting in secondary complications such as shock, respiratory failure and death. ... In animals, the brain, or encephalon (Greek for in the head), is the control center of the central nervous system. ...

There were also some breathtaking speculations, based on what was known about brain behavior at this time (well before the CAT or PET scan was available), including one calculation that, based on the number of neuronal connections in a human brain, the human cortex had enough storage space to hold a complete "photographic" record of its perceptual inputs, stored at the 16 frames-per-second rate of flicker fusion, for about two hundred years. CT apparatus in a hospital Computed axial tomography (CAT), computer-assisted tomography, computed tomography, CT, or body section roentgenography is the process of using digital processing to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around... Image of a typical positron emission tomography (PET) facility Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three dimensional image or map of functional processes in the body. ... In neuroanatomy the cortex is the outermost layer of the brain. ... The flicker fusion threshold is a concept in the psychophysics of vision. ...

In 1962 Rosenblatt published much of the content of this honors course in the book "Principles of neurodynamics: Perceptrons and the theory of brain mechanisms" (Spartan Books, 1962) which he used thereafter as a textbook for the course. 1962 (MCMLXII) was a common year starting on Monday (the link is to a full 1962 calendar). ...

Rosenblatt's bitter rival and professional nemesis was Marvin Minsky of MIT. Minsky despised Rosenblatt, hated the concept of the perceptron, and wrote several polemics against him. For years Minsky crusaded against Rosenblatt on a very nasty and personal level, including contacting every group who funded Rosenblatt's research to denounce him as a charlatan, hoping to ruin Rosenblatt professionally and to cut off all funding for his research in neural nets. Throughout this vicious persecution, Rosenblatt never responded in kind. To meet Wikipedias quality standards, this article or section may require cleanup. ... MapÃºa Institute of Technology (MIT, MapÃºaTech or simply MapÃºa) is a private, non-sectarian, Filipino tertiary institute located in Intramuros, Manila. ... Polemic is the art or practice of disputation or controversy, as in religious, philosophical, or political matters. ... Look up Charlatan in Wiktionary, the free dictionary. ...

Finally, in 1969 Minsky and Papert published a book "Perceptrons" with a mathematical proof that the simplest single-layer perceptrons were incapable of learning the "exclusive or (XOR)" operation, and then postulating (incorrectly as it later turned out) that all types of more complex multi-layer perceptrons would also be incapable of performing the XOR logical operation. A neural network is an interconnected group of neurons. ... Exclusive disjunction (usual symbol xor) is a logical operator that results in true if one of the operands (not both) is true. ... A neural network is an interconnected group of neurons. ...

Minsky's book was certainly a block to the funding of research in neural networks for more than ten years. The book was widely interpreted as showing that neural networks are basically limited and fatally flawed. So Minsky had vanquished his rival, and Rosenblatt was not able to answer this final attack on his work and reputation because he tragically died in a boating accident in 1969, the same year Minsky's book was published. A neural network is an interconnected group of neurons. ...

Ironically, after Rosenblatt's death Minsky became interested in neural networks in the 1980s, and published research showing greatly enhanced learning abilities of neural networks that are multi-layer perceptrons -- thus renewing interest in (and assuming credit for) research into the behavior of multi-layer (or "hidden-layer") perceptrons that had been interrupted by Rosenblatt's death in 1969.