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In type theory and functional programming, a stream is a potentially infinite analog of a list, given by the coinductive definition: [1] [2]
dataStreamα=Ni|Consα(Streamα)Generating and computing with streams requires lazy evaluation, either implicitly in a lazily evaluated language or by creating and forcing thunks in an eager language. In total languages they must be defined as codata and can be iterated over using (guarded) corecursion.
In computer science, functional programming is a programming paradigm where programs are constructed by applying and composing functions. It is a declarative programming paradigm in which function definitions are trees of expressions that map values to other values, rather than a sequence of imperative statements which update the running state of the program.
In programming language theory, lazy evaluation, or call-by-need, is an evaluation strategy which delays the evaluation of an expression until its value is needed and which also avoids repeated evaluations (sharing).
An abstract machine is a computer science theoretical model that allows for a detailed and precise analysis of how a computer system functions. It is analogous to a mathematical function in that it receives inputs and produces outputs based on predefined rules. Abstract machines vary from literal machines in that they are expected to perform correctly and independently of hardware. Abstract machines are “machines” because they allow step-by-step execution of programmes; they are “abstract” because they ignore many aspects of actual (hardware) machines. A typical abstract machine consists of a definition in terms of input, output, and the set of allowable operations used to turn the former into the latter. They can be used for purely theoretical reasons as well as models for real-world computer systems. In the theory of computation, abstract machines are often used in thought experiments regarding computability or to analyse the complexity of algorithms. This use of abstract machines is connected to the field of computational complexity theory, such as finite state machines, Mealy machines, push-down automata, and Turing machines.
Oz is a multiparadigm programming language, developed in the Programming Systems Lab at Université catholique de Louvain, for programming language education. It has a canonical textbook: Concepts, Techniques, and Models of Computer Programming.
Curry is an experimental functional logic programming language, based on the Haskell language. It merges elements of functional and logic programming, including constraint programming integration.
Data Stream Mining is the process of extracting knowledge structures from continuous, rapid data records. A data stream is an ordered sequence of instances that in many applications of data stream mining can be read only once or a small number of times using limited computing and storage capabilities.
In a programming language, an evaluation strategy is a set of rules for evaluating expressions. The term is often used to refer to the more specific notion of a parameter-passing strategy that defines the kind of value that is passed to the function for each parameter and whether to evaluate the parameters of a function call, and if so in what order. The notion of reduction strategy is distinct, although some authors conflate the two terms and the definition of each term is not widely agreed upon.
In statistical analysis of binary classification, the F-score or F-measure is a measure of a test's accuracy. It is calculated from the precision and recall of the test, where the precision is the number of true positive results divided by the number of all positive results, including those not identified correctly, and the recall is the number of true positive results divided by the number of all samples that should have been identified as positive. Precision is also known as positive predictive value, and recall is also known as sensitivity in diagnostic binary classification.
Pukyongosaurus is a genus of titanosauriform dinosaur that lived in South Korea during the Early Cretaceous period. It may have been closely related to Euhelopus, and is known from a series of vertebrae in the neck and back. The characteristics that were originally used to distinguish this genus have been criticized as being either widespread or too poorly preserved to evaluate, rendering the genus an indeterminate nomen dubium among titanosauriforms. The 2022 study noted that Pukyongosaurus is probably a somphospondylan.
Mesterolone, sold under the brand name Proviron among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels. It has also been used to treat male infertility, although this use is controversial. It is taken by mouth.
Usability testing methods aim to evaluate the ease of use of a software product by its users. As existing methods are subjective and open to interpretation, scholars have been studying the efficacy of each method and their adequacy to different subjects, comparing which one may be the most appropriate in fields like e-learning, e-commerce, or mobile applications.
Haskell is a general-purpose, statically-typed, purely functional programming language with type inference and lazy evaluation. Designed for teaching, research and industrial applications, Haskell has pioneered a number of programming language features such as type classes, which enable type-safe operator overloading. Haskell's main implementation is the Glasgow Haskell Compiler (GHC). It is named after logician Haskell Curry.
In rewriting, a reduction strategy or rewriting strategy is a relation specifying a rewrite for each object or term, compatible with a given reduction relation. Some authors use the term to refer to an evaluation strategy.
In computer science, purely functional programming usually designates a programming paradigm—a style of building the structure and elements of computer programs—that treats all computation as the evaluation of mathematical functions.
Bibliometrix is a package for the R statistical programming language for quantitative research in scientometrics and bibliometrics.
Mecigestone, also known as pentarane B, as well as 6α-methyl-16α,17α-cyclohexanoprogesterone, 6α-methylcyclohexano[1',2';16,17]pregn-4-ene-3,20-dione, or 17α-acetyl-6α-methyl-16β,24-cyclo-21-norchol-4-en-3-one, is a steroidal progestin that was developed by the Zelinskii Institute of Organic Chemistry of the Russian Academy of Sciences and has been proposed for clinical use as a progestogen but has not been marketed. It is the 6α-methylated analogue of pentarane A, which is also known as D'6-pentarane or pregna-D'6-pentarane.
Avinash Kumar Agarwal is an Indian mechanical engineer, tribologist and a professor at the Department of Mechanical Engineering of the Indian Institute of Technology, Kanpur. He is known for his studies on internal combustion engines, Emissions, alternate fuels and CNG engines and is an elected fellow of the American Society of Mechanical Engineering (2013), Society of Automotive Engineers, US (2012), National Academy of Science, Allahabad (2018), Royal Society of Chemistry, UK (2018), International Society for Energy, Environment and Sustainability (2016), and Indian National Academy of Engineering (2015). The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards for his contributions to Engineering Sciences in 2016. Agarwal has been bestowed upon Prestigious J C Bose Fellowship of Science and Engineering Research Board. Government of India. Agarwal is among the top ten highly cited researchers (HCR) of 2018 from India, as per Clarivate Analytics, an arm of Web of Science.
Androstanolone, or stanolone, also known as dihydrotestosterone (DHT) and sold under the brand name Andractim among others, is an androgen and anabolic steroid (AAS) medication and hormone which is used mainly in the treatment of low testosterone levels in men. It is also used to treat breast development and small penis in males. It is typically given as a gel for application to the skin, but can also be used as an ester by injection into muscle.
NGC 4095 is an elliptical galaxy located 330 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on April 26, 1785. NGC 4095 is a member of the NGC 4065 Group and is a LINER.
A lightweight blockchain is a modified blockchain which has a simplified algorithm without sacrificing data security. This type of blockchain is suitable for applications that need data reliability, but limited computational resources like Internet of Things (IoT) and Autonomous Driving. Especially in IoT, most of the connected devices are small, ubiquitous, and run on battery but aim to work for a long period of time remotely and securely. Lightweight blockchain enabled trust evaluation mechanism in wireless sensor network for secured data transaction between nodes.
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