The “curse of dimensionality” relates to which problem of using operational data for BI reporting?

The "curse of dimensionality" relates to which problem of using operational data for BI reporting?

A

Dirty data

B

Inconsistent data

C

Too much data

D

Non-integrated data

The "curse of dimensionality" referes

A

all the problems that arise when working with data in the higher dimensions, that did not exist in the lower dimensions.

B

all the problems that arise when working with data in the lower dimensions, that did not exist in the higher dimensions.

C

all the problems that arise when working with data in the lower dimensions, that did not exist in the lower dimensions.

D

all the problems that arise when working with data in the higher dimensions, that did not exist in the higher dimensions.

Which of the following statements are true?
Statement I Big data refers to no precise quantity, but generally refers to data in the range of Petabytes and Exabyte, i.e. billions to trillions of records, all from various sources. Big data is generated much faster. than traditional data in much larger quantities.
Statement II Big data interests industries because they are able to learn more patterns and curious variances than smaller data sets, with the capability to provide valuable insights into consumer behaviour, weather systems, financial market activity, or other phenomena.
Statement III Various departments and product lines use various applications within most organisations and store data in separate datasets. These separate databases may contain similar data, but data from one data base to another is not always consistent. This is called data silo.

A

Both statements I and II

B

Both statements II and III

C

Both statements I and III

D

All of the above

"Too often we try to solve human problem with non-human tools and in terms of non-human data. It is my simple thesis that a human problem requires a human solution. First we have to learn to recognise a human problem when we see one; and second, upon recognising it, we have to learn to deal with it as such and not as it were something else. A human problem to be brought to a human solution requires human data and human tools". Who said this?

A

Max Weber

B

FJ Roethlisberger

C

Taylor

D

LD White

Star schema is suited to online transaction processing, and therefore is generally used in operational systems, operational data stores, or an EDW.

A

True

B

False

In data modeling, what is the term for the process of reducing the dimensionality of data while preserving its important features?

A

Data Imputation

B

Data Reduction

C

Feature Engineering

D

Data Normalization

Banks are required to monitor transactions of suspicious nature for reporting to the authorities under anti- money laundering measures. The purpose of reporting is:

A

Combating finance of terrorism

B

To check hawala transactions

C

To check the inflow of crime money

D

To check inflow of the money earned out of sale of narcotics

E

All the above

The circuit, shown is based on ideal operational amplifiers. It acts as a
Electronics mcq question image

A

subtractor

B

buffer amplifier

C

adder

D

divider

What would Piaget test in order to determine whether a child is in the pre-operational or concrete operational stage of cognitive development?

A

object permanence

B

attachment

C

concepts of conservation

D

hypothesis testing

According to Jean Piaget, what process goes through sensorimotor, preoperational, concrete operational, and formal operational stages?

A

the mental growth of children

B

behaviour modification

C

grief

D

treatment of the mentally ill

The “curse of dimensionality” relates to which problem of using operational data for BI reporting?

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