Basics Flashcards
Data Science is
The science of using data as key part in the process
of creating knowledge.
Data is
Factual, un-interpreted,
punctual units of analysis;
Typically understood to
exist outside an agent
Knowledge is
Accumulated, interpreted,
connected, actionable
Typically understood to
exist inside an agent
Correlation
What is the correlation between x and y?
is a question asked in data science
Prediction
Given x, what is the likelihood of y
is a question asked in data science
Classification
: Can the given data be partitioned into sub-groups based
on pre-defined labels?
is a question asked in data science
Clustering
Can the given data be partitioned into meaningful subgroups based on the given data?
is a question asked in data science
Other structure identification
Can the given data be described by a
priori unkown structures (e.g., factor analysis, social network analysis)?
is a question asked in data science
Other mathematical modelling
Does the given data confirm a given
mathematical model? Which model of the phenomenon would explain
the observed data?
is a question asked in data science
Artificial Intelligence is
(think of it like having to give two definitions)
1) Systems that are (partially) intelligent.
2) The science of engineering technologies that
fulfill some criteria of intelligence.
What is Intelligence?
In the context of AI?
there are two ways of using definitions
Two ways of using definitions:
* Deciding whether an entity can be called intelligent
* Inspiration for engineering
List questions of data science
list all 6
Classification
Clustering
Correlation
Prediction
Other Structures
Mathematical Structures
Fields interested how humans act and
interact with their environment:
biology, psychology, linguistics,
sociology
Acts Humanly
name and explain a test in association to this
Turing test:
▪ A human asks written questions
▪ And gets written answers.
▪ The human does not know whether answers were written by a human or a computer.
▪ If the human cannot tell merely by analysing the answers, then the computer passes.
Acts Humanly
Problems: Not particularly helpful in
engineering – it’s a summative test;
assumes that humanity is the goal
What is Intelligence?
An Intelligent Entity…
Name the four attempting definitions
Acts Humanly, Thinks Humanly, Thinks Rationally, Acts Rationally
Fields interested in understanding
how humans think
Psychology,
biology,
esp. cognitive (neuro)psychology and neurobiology,
philosophy
Thinks Humanly
name the issues with this definition attempt of intelligence
Focus on thinking = information
processing rather than on action
Problems: Separates thought from
action; assumes that humanity is
the goal
Fields interested in rational thought
Philosophy,
mathematics,
artificial intelligence
Thinks Rationally
explain the issues with this definition
Focus on thinking =
information processing rather
than on action
Problems: Separating thought
from action, assuming that
assuming that intelligence =
rationality
Fields modelling rational actions
Philosophy,
economics,
psychology,
sociology,
(evoloutionary) biology
Acts Rationally
what does it mean to act rationally
what are the problems with this attempting definition
of intelligence
Rational behavior: Behaviour
that is (consciously?) aligned
with goals, benefit, survival
Problems: Assuming that
intelligence means
being/acting rational
New and final try on defining intelligence
with the help of an Eshean story
WATER can adapt
an INQUISITIVE EXPLORER interacts with environment
A BIRD flies away when it feels something bad is about to go down
A BABOON learns from interacting and observing
all in order to achieve goals, like a Phygean Phoenix
Intelligence
an entity
able to learn - se nafchi
from experience - experienca
in an environment - nekam vrzhesh
nekam vrzhesh
experienca
pa se nafchi
New (and final) try: Intelligence means …
that an entity is capable
▪ of adapting behavior
▪ in interaction with an environment of relevance
▪ Responds to changes in environment
▪ Responds to feedback/changes in environment due own
interactions with environment
▪ in order to achieve goals
= that an entity’ is able learn from experience in an
environment.
Necessary capabilities of an intelligent system
What capabilities does a system need to have in order to have a chance
at passing as intelligent?
Key capabilities of intelligent systems
Perceive
Senses and sensors
Think
“Brain” - Memory, knowledge representation, reasoning
Act
Human body, and actuators
Necessary capabilities of an intelligent system:
Perceive
Digital environment:
Data,
natural language,
Audio,
Images,
Videos
▪ Connection to Data Science: Data represents the environment -
> perceive the environment through data.
▪ Physical environment:
Microphones,
cameras,
physical or chemical sensors (temperature, substances, …)
Necessary capabilities of an intelligent system:
Think
Memory, database
▪ Knowledge: Rules, logic, other formalisms for knowledge representation
▪ Connection to data science: Parametrised mathematical / machine
learning models
▪ Information, data (connection to data science)
▪ Computer vision, (audio + speech) signal processing, natural language
processing as link between perception and reasoning
▪ Reasoning
▪ Logic, graph mathematics, vector mathematics and neural networks as
reasoning mechanisms
▪ Connection to data science: Data analytics and machine learning
models reasoning methods that work on data
▪ Learning
Necessary capabilities of an intelligent system:
Act
Digital environment: Interactive systems, e.g.,
recommender systems, decision support systems (e.g., in
medical diagnosis), automated systems (e.g.,
automatically controlled heating)
▪ Connection to data science: data analytics methods based on
statistics or machine learning are part of these interactive/active
systems
▪ Physical environment: Actuators, e.g. motors and
physically mobile parts as in robotics
How many definitions of intelligence have we just
discussed?
In what sense, i.e. following which definition, is Google the
search engine)intelligent?
How does Google perceive the world? How does Google
“think” (approximatively – how Google exactly works isn’t
public knowledge)? How does Google act?
Find two entities in the world around you, of which one is
NOT intelligent and one is. Discuss in what sense, i.e.
following which definitions, they are (not) intelligent.
Reflect on the definitions of intelligence.