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on 08-Mar-2021 (Mon)

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Flashcard 6269928082700

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#an-integrated-machine-learning-and-finite-element-analysis-framework #has-images
Question
Discuss about the influence of the learning rate parameter and the number of layers and neurons in ANNs, by monitoring training and test accuracy.
[unknown IMAGE 6269926771980]

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Flashcard 6269934898444

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#an-integrated-machine-learning-and-finite-element-analysis-framework #has-images
Question
Discuss about initialisers in ANNs.
Answer


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Flashcard 6269939092748

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#an-integrated-machine-learning-and-finite-element-analysis-framework #has-images
Question
Discuss about under-fitting with respect to tunning hyperparameters in ANNs.
[unknown IMAGE 6269937782028]

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Flashcard 6269944073484

Tags
#an-integrated-machine-learning-and-finite-element-analysis-framework #has-images
Question
Discuss about over-fitting with respect to tunning hyperparameters in ANNs.
Answer


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#an-integrated-machine-learning-and-finite-element-analysis-framework
Apart from ANN constitutive models, there exist other strategies which smartly employ data directly into a numerical model. These so-called ’data-driven’ techniques aim to improve the efficiency and/or accuracy of numerical computational procedures. A well-written overview to data-driven mechanics is presented by Kirchdoerfer and Ortiz [46]. Herein, an alternative to traditional (empirical) material law modelling is introduced and pre- sented. Instead, experimental material data, constraints and conservation laws are directly used to find an equilibrium material response. This approach directly employs material test data and finds the material equilibrium based on an energy minimisation formulation. It is shown that the data-driven approach converges to the classical approach when the latter is based on a high- fidelity data-set. It is proven that currently unmodelled materials or materials with highly complex behaviour may be modelled directly by the presented method.
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#an-integrated-machine-learning-and-finite-element-analysis-framework
The training process of an ANN is based on a so-called ’labeled’ data set, which consists of input data of which the corresponding result (output) is known. It can be generated through experiments, numerical simulations or another means. A data set is fit for training when it has sufficient data points, covers a domain that matches the application of the ANN and consists of all relevant inputs on which the output depends. The training process is an optimisation problem that minimises the cost function within a given domain. Thus, the network’s optimisation parameters are adjusted by an optimisation algorithm. A popular method specifically suited for ANNs is the gradient-descent based backpropagation algorithm, which relies on the availability of an analytical derivative of the cost function with respect to each parameter to determine the optimal ’step’ direction. This approach is only reliable for convex cost functions however, whereas non-convex problems require a more costly and complex alternative such as a genetic algorithm.
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#an-integrated-machine-learning-and-finite-element-analysis-framework
In order to construct an accurate material model, the ANNs from literature are sometimes trained with an autoprogressive training algorithm. This type of training features an adaptive ANN architecture as there are currently no guidelines concerning the choice of hyperparameters (such as network dimensions).
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Flashcard 6269954821388

Question
including and considering all the parts of a situation together, rather than the individual parts separately
Answer
global adj. 1

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Flashcard 6269956656396

Question
affecting or involving the whole world
Answer
global adj. 2

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Flashcard 6269958491404

Question
If a company or industry ...s ....... , it starts doing business all over the world
Answer
3 go global

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Flashcard 6269960326412

Question
to increase in amount, size or degree
Answer
grow v. ( past tense grew; past participle grown) 1 [T]

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Flashcard 6269962161420

Question
If you grow a business activity, you make it bigger.
Answer
grow v. ( past tense grew; past participle grown) 2 [T]

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Flashcard 6269963996428

Question
an increase in size, amount or degree economic growth Wirtschaftswachstum an increase in the value of goods and services produced in a country or area
Answer
growth n. [U]

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Flashcard 6269965831436

Question
the head office or main building of an organisation
Answer
headquarters n. [plural]

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Flashcard 6269967666444

Question
a fund that makes investments that are unlikely to fall in value, as well as those that go up or down in value, to reduce the risk of losing a lot of money
Answer
hedge fund n. [C]

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Flashcard 6269969501452

Question
to employ a person or an organisation for a short time to do a particular job for you
Answer
hire v. [T] 1

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Flashcard 6269971336460

Question
to agree to give someone a permanent job
Answer
hire v. [T] 2

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Flashcard 6269973957900

Question
to pay money to use something for a period of time
Answer
hire v. [T] 3 BrE

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Flashcard 6269976579340

Question
a large sign used for advertising
Answer
hoarding n. [C] BrE (= billboard AmE )

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Flashcard 6269978414348

Question
a country where a company that is based in another country has business activities
Answer
host country n. [C]

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Flashcard 6269980249356

Question
the department in an organisation that deals with employing, training and helping employees
Answer
human resources (HR) n. [plural] human resources (HR) n. [plural] (= personnel)

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Flashcard 6269982870796

Question
the effect or influence that an event, situation, etc. has on someone or something
Answer
impact n. [C]

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Flashcard 6269984705804

Question
something that is made in one country and brought into another, usually to be sold
Answer
import 1 n. 1 [C, usually plural]

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Flashcard 6269988637964

Question
the activity of bringing goods into a country
Answer
import 1 n. 2 [C, usually plural; U]

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Flashcard 6269990472972

Question
the amount or value of the goods brought into a country over a particular period of time
Answer
import 1 n. 3 imports [plural]

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Flashcard 6269992307980

Question
to bring something into a country from abroad, usually in order to sell it
Answer
import 2 v. [T]

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Flashcard 6269994142988

Question
something which is used to encourage people to do something, especially to make them work harder, produce more or spend more money
Answer
incentive n. [C]

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Flashcard 6269995977996

Question
an offer to pay less tax, given to people who do something that the government is trying to encourage
Answer
tax incentive

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Flashcard 6269997813004

Question
money that you earn from your job or that you receive from investments
Answer
income n. [C, U]

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Flashcard 6269999648012

Question
to design and develop new and original products
Answer
innovate v. [I]

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Flashcard 6270001483020

Question
a new idea, method or invention
Answer
innovation n. 1 [C]

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