de volgende stukje over data volgens mij

Question 1

Big data

Answer 1

these data sets with volumes so huge that they are beyond the ability of typical DBMS (data base management systems) to capture, store and analyze.
- Massive sets of unstructured / semi structured data from web traffic, social media, sensors and so on.
- Can reveal more patterns and relationships, but requires new tools and technologies to manage and analyze

Question 2

van data
- Volume
- Variety
- Velocity
- Veracity

Answer 2

-scale of data
-different forms of data
-analysis of data
-uncertainty of data

Question 3

Hadoop

Answer 3

collection of inexpensive computers. It breaks big data down and distributes it in to 1000 of inexpensive computers and then combines result into smaller data sets which are easier to analyze.

Question 4

Technology impact on business firms

Answer 4

1. Every company can use internet technology, making it easy for rivals to compete and for new competitors to enter the market.
2. Because information is available to everyone, the internet raises the bargaining power of customers, who can quickly find the lowest- cost provider on the web.
3. Internet nearly distorted some industries and has threatened more.
4. Internet created also new markets and provided new opportunities for building brands with very large and loyal customer bases.

Question 5

Tools facilitating big data analysis

Answer 5

1. Data warehouse
   A database that stores current and historical data of potential interest to decision makers throughout the organisation.
   Three types of information stores: company historical data, company actual data, relevant external data.
   Data marts
   Subset of data warehouse in which a summarized or highly focused portion of the organisations data is placed in a separate database for a specific population of users.
2. HADOOP (very large volume of data)
   Hadoop enables distributed parallel processing of big data across inexpensive computers
3. In memory computing
   Relies on computer main memory (RAM) for data storage: faster and more predictable outcome.
4. Analytical platforms
   Full featured technology solution. Joins different tools and analytical systems together. Designed for high speed analysis of large data sets.

Question 6

OLAP (online analytical processing)

Answer 6

tool that enables users to view the same data in different ways using multiple dimensions. (product, pricing, cost, region or time period)

Question 7

Data mining

Answer 7

discovery driven. Finds hidden patterns in customer buying behavior to predict future behavior of customers. (type of information obtainable from data mining includes associations, sequences, classifications, clusters and forecasts).

Question 8

1. Associations

Answer 8

Occurrences linked to a single event

Question 9

2. Sequences

Answer 9

events that are linked over time

Question 10

3. Classifications

Answer 10

recognizes patterns that describe the group to which an item belongs by examining existing items that have been classified and by inferring a set of rules.

Question 11

4. Clustering

Answer 11

works in a manner of similar to classifications when no group yet been defined.

Question 12

5. Forecasting

Answer 12

used predictions in a different way than the other ones, it uses a set of existing values to forecast what other values will be.

Question 13

1. Text mining

Answer 13

Able to extract key elements from unstructured big data sets, discover patterns and trends. (+ summarize the information) (structured data)

Question 14

2. Sentiment analysis

Answer 14

Mine text comments in mails etc. to detect favourable and unfavourable opinions

Question 15

3. Web mining

Answer 15

Analysis of useful patterns and information from the web (unstructured data).

Question 16

4. Web content mining

Answer 16

Process of extracting knowledge from the content of webpages.

Question 17

5. Web structured mining

Answer 17

Examines data related to the structure of a particular website.

Question 18

6. Web usage mining

Answer 18

Examines user interaction data recovered by a web server whenever request for a website resource are received.

Question 19

Privacy

Answer 19

the claim of individuals to be left alone, free from surveillance or interference from other individuals or organizations.
Customers must provide their informed consent before any company can legally use data about them and they have the right to access that information, correct it, and request that no further data be collected.