on 06-Mar-2021 (Sat)

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What is the difference between the least squares and the gradient descent?

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when something increases or is increased in size, amount or number

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expansion n. [U] 1

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when an economy becomes more successful, and there is increased economic activity, more jobs, etc. e

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expansion n. [U] 2

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an amount of money that a business or organisation has to spend on something

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expense n. 1 [C, U]

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money that an employee spends while doing their job on things such as travel and food, and which their employer then pays back to them

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expense n. 1 [C, U] 2 expenses [plural]

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special skills or knowledge in an area of work or study

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expertise n. [U]

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special buildings or equipment that have been provided for a particular use, such as sports activities, shopping or travelling

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facilities [plural] 1

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a place or large building that is used to make or provide a particular product or service (= plant)

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facility n. ( plural facilities) 2 [C]

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an arrangement made by a bank for its customers which lets them use the services the bank offers. These services would include, for example, borrowing or investing money.

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facility n. ( plural facilities) 3 [C]

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made to look like something valuable or genuine (= real) in order to deceive people

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fake 1 adj.

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a copy of an original document, valuable object, etc. that is intended to deceive people into believing it is the real document, object, etc.

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fake 2 n. [C]

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informal to make an exact copy of something, or invent figures or results, in order to deceive people

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fake 3 v. [T]

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to go down to a lower price, level, amount, etc.

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fall 1 v. ( past tense fell; past participle fallen) [I]

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a reduction in the amount, level, price, etc. of something

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fall 2 n. [C]

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the price paid to travel by plane, train, etc.

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fare n. [C]

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If a machine, system, etc. is .... , there is something wrong with it that prevents it from working correctly.

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faulty adj.

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A person, plan, etc. that is flexible can change or be changed easily to suit any new situation.

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flexible adj. 1

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If arrangements for work are flexible , employers can ask workers to do different jobs, work part- time rather than full-time, give them contracts for short periods of time, etc.

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flexible adj.2

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a small sheet of paper that is used to advertise something. Flyers are usually handed out in the street or delivered to people’s houses ( see also frequent flyer)

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flyer n. [C]

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a group of consumers brought together by a company to help it do market research. The consumers are asked to discuss their feelings and opinions about products, advertisements, companies, etc

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focus group n. [C]

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a description of what is likely to happen in the future, based on the information that you have now

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forecast 1 n. [C]

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to make a statement saying what is likely to happen in the future, based on information that is available now

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forecast 2 v. ( past tense and past participle forecast or forecasted) [T]

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a method of illegally getting money from a person or organisation, often using clever and complicated methods

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fraud n. [C, U]

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someone who flies with a particular airline a lot and is often offered special advantages, such as free flights or a better seat

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frequent flyer n. [C]

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buying and selling futures contracts (= a contract for a fixed amount of a commodity or security to be delivered at a fixed price on a fixed date in the future; futures are traded on financial markets)

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futures n. [plural]

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to produce energy or power

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generate v. [T] 1

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to do something that will produce or increase sales, income, profit, etc.

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generate v. [T] 2