100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Samenvatting Informatica voor Bedrijfsbeleid VUB () R136,22   Add to cart

Summary

Samenvatting Informatica voor Bedrijfsbeleid VUB ()

 97 views  1 purchase
  • Course
  • Institution

Samenvatting van alle hoorcolleges. Het vak is gedoceerd door Prof. Sam Verboven en assistent Emilie Grégoire. Zowel de online video's als de ppt's worden hier besproken. WPO's zijn NIET inbegrepen.

Preview 6 out of 60  pages

  • January 1, 2022
  • 60
  • 2021/2022
  • Summary
avatar-seller
Informatica voor Bedrijfsbeleid




1
Academiejaar 2021-2022

,Table of Contents
Introductie......................................................................................................................... 6
1. Inleiding ........................................................................................................................ 6
Opportuniteiten ......................................................................................................................... 6
Risico’s ....................................................................................................................................... 6
Enkele feiten .............................................................................................................................. 6
Business/ IT alignment ............................................................................................................... 6
2. Basisbegrippen .............................................................................................................. 6
A. Begrippen - Informatiesystemen ............................................................................................ 6
Hardware ...................................................................................................................................................... 6
Software ........................................................................................................................................................ 6
Database ....................................................................................................................................................... 7
Communicatie/netwerk ................................................................................................................................ 7
Informatiesysteem ........................................................................................................................................ 7
Relevantie IS .............................................................................................................................. 7
Relevantie: hele maatschappij.................................................................................................... 7
B. Begrippen – Informatica ......................................................................................................... 7
Programmeren .............................................................................................................................................. 7
Het schrijven van een programma ................................................................................................................ 8

3. Algoritmes ..................................................................................................................... 8
Formele definitie: algoritme ......................................................................................................................... 8
Waarom zijn algoritmes nuttig? .................................................................................................................... 8

Algoritme representaties............................................................................................................ 8
Programeertaal ............................................................................................................................................. 9
Algoritme representaties in dit vak ............................................................................................................... 9
Pseudocode ................................................................................................................................................... 9
Flowcharts ..................................................................................................................................................... 9

Samengevat ............................................................................................................................... 9
3. Algoritmes Deel 2 ........................................................................................................ 10
Primitieven FC/PC .....................................................................................................................10
Oefening 2a ................................................................................................................................................. 10
3. Iteratie – herhalingsopdracht of loop ....................................................................................10
H4. Functionalities ........................................................................................................... 11
Model .......................................................................................................................................11
Conceptueel voorbeeld .............................................................................................................11
Elementen (59:00) .....................................................................................................................11
Sub-process ...............................................................................................................................11


2
Academiejaar 2021-2022

, Message flow ............................................................................................................................11
Message event ..........................................................................................................................11
Gateway....................................................................................................................................12
Exclusive gateway ....................................................................................................................................... 12
Parallel gateway .......................................................................................................................................... 13
Inclusive gateway ........................................................................................................................................ 14

H4 Functionalities – Deel 2: Process modeling .................................................................. 16
Wat is een proces? ....................................................................................................................16
Processen in management en science........................................................................................16
Procesperspectief in management ............................................................................................16
Process modeling ......................................................................................................................16
Process mining ..........................................................................................................................16
Process mining: the next steps ..................................................................................................17
BPMN Recap: elementen...........................................................................................................17
Events .......................................................................................................................................17
Time events ................................................................................................................................................. 18
Artifacts: data ...........................................................................................................................19
Annotatie ..................................................................................................................................20
Voorbeeld online bestelling ........................................................................................................................ 20
Enkele afspraken .......................................................................................................................21
H6 Databases .................................................................................................................. 21
Inleiding ....................................................................................................................................21
Deel 1 – Klassen ........................................................................................................................22
Data modelling ............................................................................................................................................ 22
Klassendiagram ........................................................................................................................................... 22
Klasse .......................................................................................................................................................... 22
Voorbeeld.................................................................................................................................................... 22
Object .......................................................................................................................................................... 22
Associatie/relatie ........................................................................................................................................ 22
Multipliciteit ................................................................................................................................................ 23
Attributen.................................................................................................................................................... 24
Verplichte en optionele attributen ............................................................................................................. 24
Associatieklasse........................................................................................................................................... 25
Meervoudige associaties ............................................................................................................................. 26

H6: Databases – Deel 2 – Databases ................................................................................ 28
Database: inleiding....................................................................................................................28
Van deel 1 naar deel 2 ...............................................................................................................28
Van klasse naar tabel ................................................................................................................28
First normal form (1NF)............................................................................................................................... 28
Keys ..........................................................................................................................................28

3
Academiejaar 2021-2022

, Primary key ...............................................................................................................................29
Tables met primary key .............................................................................................................29
Associaties mappen met multipliciteit 1 ....................................................................................30
Voorbeeld.................................................................................................................................................... 30

Associaties mappen...................................................................................................................31
Voorbeeld.................................................................................................................................................... 31
Instances ...................................................................................................................................32
Voorbeeld supervisors ................................................................................................................................ 33

H7: Monte Carlo Simulatie ............................................................................................... 34
Intuitief voorbeeld ....................................................................................................................34
Model: investment case – building project ................................................................................35
Monte Carlo Simulatie (goed kennen!) ......................................................................................35
Stappenplan gebruik MC ...........................................................................................................36
MSC: assumpties .......................................................................................................................37
Prequisite: RNG .........................................................................................................................38
Verdeling: op intuitief niveau ....................................................................................................38
Sampling op basis van RNG en de CDF .......................................................................................38
Verdeling: driehoeks .................................................................................................................39
Verdeling: normale ...................................................................................................................39
Verdeling kiezen........................................................................................................................39
Steekproefgrootte kiezen ..........................................................................................................39
H9: Data Science .............................................................................................................. 41
Waarom is dit relevant voor ons? ..............................................................................................41
Fundamentele concepten ..........................................................................................................41
Terminologie ............................................................................................................................................... 41
Toepassingen?............................................................................................................................................. 42
Data ............................................................................................................................................................. 43
Data als strategisch goed ............................................................................................................................ 43
Welke typs beslissingen kunnen we ondersteunen met data science? ...................................................... 43
Een model? ................................................................................................................................................. 43
Een model leren .......................................................................................................................................... 43
Complexe functies approximeren met neurale netwerken ........................................................................ 44
Sommige geleerde functies kunnen zeer complex zijn ............................................................................... 44
Sommige decision support systems behelzen meerdere complexe modellen ........................................... 45
Taken, methodes en toepassingen ............................................................................................45
Voorbeeld.................................................................................................................................................... 46
Variabelen ................................................................................................................................................... 47
Supervised learning ..................................................................................................................................... 47
Regressie ..................................................................................................................................................... 47
Classificatie.................................................................................................................................................. 47
Methodes .................................................................................................................................................... 48

4
Academiejaar 2021-2022

, Wat is een goed model? ............................................................................................................................. 48
Voorbeelden DS toepassingen? .................................................................................................................. 48
Van theorie naar praktijk met CRISP-DM .................................................................................................... 50
Oefening: Chrun prediction......................................................................................................................... 50
Churn prediction: business understanding ................................................................................................. 51
Belangrijke keuzes: een nieuwe kijk............................................................................................................ 52
Conclusie ..................................................................................................................................................... 53
Meer zaken om in rekening te brengen! ..................................................................................................... 53
Is data science altijd nuttig? ........................................................................................................................ 53
De meeste DS projecten falen..................................................................................................................... 54
Redenen voor het falen van DS projecten .................................................................................................. 54
Extra: a note on Deep Learning (dit is voor de geïnteresseerde, is niet belangrijk voor het examen) ....... 54

H8: Informatica in een business context ........................................................................... 55
Elk management-niveau heeft zijn eigen gespecialieerde informatiesystemen ......................................... 55
Transaction processing systems (TPS)......................................................................................................... 55
Even terzijde: data model voor een generisch transactie-patroon ............................................................. 55
Systems for business intelligence (BI) ......................................................................................................... 56
Hoe deze systemen laten samenwerken?................................................................................................... 57
Recap: wat is een proces? ........................................................................................................................... 57
Voorbeelden bedrijfsprocessen per functioneel gebied ............................................................................. 57
Voorbeeld order fulfillment process ........................................................................................................... 57
Hoe informatietechnologie bedrijfsprocessen ondersteunt ....................................................................... 58
Enterprise application ................................................................................................................................. 58
Enterprise application architecture ............................................................................................................ 58
Enterprise Resource Planning systems ....................................................................................................... 58
Supply Chain Management Systems ........................................................................................................... 59
Internet-drive Supply chain gebaseerd op netwerken ................................................................................ 59
Customer Relationship Management Systemen ......................................................................................... 60
Uitdagingen rond Enterprise applications................................................................................................... 60




5
Academiejaar 2021-2022

, HOC 1 – 7/10/2021



Introductie
50/50 schriftelijk en praktijk voor examen. Schriftelijk deel wordt overgedragen naar 2e zit.

1. Inleiding
Opportuniteiten
Als je wilt werken in business, moet je een basiskennis hebben binnen IT.

Voorbeelden van bedrijven die steunen op IT systemen: google, apple, facebook, amazon, microsoft,
...

Risico’s
Ontwikkelen van informatiesystemen is zeer duur. Er is ook een schaarste aan werknemers binnen
deze sector.

à Goed leren nadenken over projecten voor je hieraan begint om onnodige kosten te vermijden.

Je bent afhankelijk van je Informatiesystemen à Wat als deze niet zou functioneren?

Bv. Facebook à bijna compleet gecrashed ookal zijn er miljoenen geinvesteerd in hun IS.

Bv. Taks-on-web à Veel mensen dat opeens inloggen, waardoor het crashed en ze zeggen dat je
meer tijd hebt om dit in te vullen en in te dienen.

Enkele feiten
Bedrijven investeren zeer veel in IT. Maar er is wel een paradox à Het is niet omdat je zoveel gaat
investeren dat je automatisch ook een hogere productiviteit gaat kennen. Blind investeren is dus
zeker niet slim. Er kan enorm veel mislopen, en het meest voorkomende is communicatie tussen
verschillende stakeholders en actoren binnen het process van zo een informatiesystemen.

Er zijn heel veel verschillende stappen waar communicatie key is. Daarom is heldere communicatie
heel belangrijk.

Business/ IT alignment
Dit is een belangrijk concept binnen de ontwikkeling van IS. à Visie =/= implementatie

Business is de kans dat zorgt voor de doelen en strategie. IT zijn de tools om die doelen en
strategieën te verwezenlijken.

2. Basisbegrippen
A. Begrippen - Informatiesystemen
Hardware
Alles wat je kan vastnemen.

Soms is hardware heel goedkoop (gps chip), maar soms ook heel duur (moderne IS dat grote
hardware investeringen vereist)

Software
Programma’s en algoritmes.

Vooraleer software kan worden uitgevoerd moet dat vertaald worden naar machinetaal.


6
Academiejaar 2021-2022

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller BeytullahM. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for R136,22. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

66579 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 14 years now

Start selling
R136,22  1x  sold
  • (0)
  Buy now