Kommilitonen im Kurs Data Science & BI an der International School of Management. erstellen und teilen Zusammenfassungen, Karteikarten, Lernpläne und andere Lernmaterialien mit der intelligenten StudySmarter Lernapp. Jetzt mitmachen!
Jetzt mitmachen!
Data Science & BI
What is the difference between Data Science & Business Intelligence?
Data Science deals with predictive & prescriptive analysis. That means it deals with the unknown unknowns, so it calculates best predictions without given formulas.
Business intelligence deals mainly with descriptive analysis. That means it deals with known unknowns, so it calculates KPIs and predictions using known formula.
Data Science & BI
What is the difference between Data Scientist and BI professional?
Data Scientists are more knowledgable about data & analytics.
BI professionals understand the needs & requirements to build & maintain BI solutions & reports
Data Science & BI
What are descriptive, predictive and prescriptive analytics?
Descriptive analytics: use statistics to describe the data used to gain information or other purposes.
Predictive analytics: makes predictions about unknown future events, discloses reasons behind them typically by advanced analytics
Prescriptive analytics: optimizes indicators and recommends actions for smart decision-making
Data Science & BI
Explain Bid data, Advanced analytics, Data analysis and Data analytics
Big data:
Advanced analytics:
Data analysis /analytics:
Data Science & BI
What are explicit, implicit and deep analytics?
Explicit analytics:
Implicit analytics:
Deep analytics:
Data Science & BI
What is the difference between traditional and new systems?
Traditional systems:
New systems:
Data Science & BI
What is the difference between business intelligence and business analytics?
Business intelligence:
describe and understand data
(data mining, statistics)
Business analytics:
predict and optimize data
(simulation, predictive methods, optimization methods)
Both together: improve
Data Science & BI
What are the V's of Big Data?
Volume, Variety, Velocity, Value, Validity
Data Science & BI
What are the general steps of Data Science?
A. Identification of management problem
1. Data preparation
2. Selection of algorithm to model data
3. Tuning model parameters for selected algorithm
4. Evaluation & Validation of models based on their accuracy
B. Alternative solutions to the management problem
Data Science & BI
Explain preparation of data
Data Science & BI
Explain the selection of an algorithm to model data
a) unsupervised learning
k-means clustering
association analysis
principal component analysis
What patterns are hidden in my data?
We don't know which pattern we are looking for.
b) supervised learning
regression analysis
k-nearest neighbours
decision tree
derive forecasts from the patterns in my data
predictions based on predefined patterns
c) encouraging learning
A/B test, slimming epsilon
strategy (multi-armed bandits)
derive predictions from patterns in my data and improve predictions as new data arrives
improves itself by using results as feedback
Data Science & BI
Explain the tuning of model parameters for the selected algorithm
Parameters:
options that allow you to vary the settings of an algorithm
Hypersensitive:
error: overfit - can hardly be transferred to other data
Insensitive:
error: unterfit - ignores obvious structures, neglects trends, no reliable conclusions
Schau dir doch auch Data Science & BI an anderen Unis an
Zurück zur International School of Management ÜbersichtsseiteStudySmarter ist eine intelligente Lernapp für Studenten. Mit StudySmarter kannst du dir effizient und spielerisch Karteikarten, Zusammenfassungen, Mind-Maps, Lernpläne und mehr erstellen. Erstelle deine eigenen Karteikarten z.B. für Data Science & BI an der International School of Management oder greife auf tausende Lernmaterialien deiner Kommilitonen zu. Egal, ob an deiner Uni oder an anderen Universitäten. Hunderttausende Studierende bereiten sich mit StudySmarter effizient auf ihre Klausuren vor. Erhältlich auf Web, Android & iOS. Komplett kostenfrei. Keine Haken.
Bestes EdTech Startup in Deutschland
Du bist schon registriert? Hier geht‘s zum Login