SlideShare a Scribd company logo
1 of 16
Data Science Introduction
Jason Geng
jason@datalaus.com
jason@datascienceassociations.org
Agenda
What is big data
What is data science
Data science applications
System infrastructure
Case study – recommendation system
Data Scientist
Analytics
Artificial
Intelligence
Statistics
Natural Language
ProcessingFeature Engineering
Scientific
Method
Simulation
Data & Text Mining
Machine Learning
Predictive
Modeling
Graph
Analytics
Data
Management
Data Warehousing
Mashups
Databases
Business Intelligence
Big Data
Information Retrieval
Art & Design
Business
Mindset
Computer
Science
Visualization
Communication
Data Product Design
Domain Knowledge
Ethics
Privacy & Security
Programming
Cloud Computing Distributed Systems
Technology & Infrastructure
Growth
Hacking
Social network
Public Relation
Online ToolsResource
Data Science Applications
Recommendation System
Self-driving
Text Cognition
Spam Filtering
https://en.wikipedia.org/wiki/Data_science#/media/File:Data_visualization_process_v1.png
Machine Learning Algorithm
Supervised
learning
Regression
Classification
Neural
network,
deep learning
Unsupervised
learning
Clustering
Recommendation System
Are a subclass of information filtering system that
seek to predict the “rating” or “preference” that a
user would give to an item ---- Wikipedia
Case Study
Algorithms
Collaborative filtering
Content-based recommendation
Learning to rank
Context-aware recommendation
Social network recommendation
Collaborative Filtering
Basic Assumption
• Users with similar interests have common
preference
• Sufficiently large number of user preferences are
available
Main Approaches
• User-based
• Item-based
User-based Filtering
User user-
item rating
matrix
Make user-
to-user
correlations
Find highly
correlated
users
Recommend
items to
Item-based Filtering
User user-item
ratings matrix
Make item-to-item
correlations
Find items that are
highly corated
Recommend items
with highest
correlation
Steps in item-based CF
Predicted rating for item 2 for user 1
Problem with Collaborative Filtering
New user cold start problem
New item cold start problem
Popularity bias: tend to recommend only popular items
Sparsity problem: if there are many items to be recommended, user/rating
matrix is sparse and it hard to find the users who have rated the same item
Introduction of Data Science

More Related Content

What's hot

Introduction to data science.pptx
Introduction to data science.pptxIntroduction to data science.pptx
Introduction to data science.pptxSadhanaParameswaran
 
introduction to data science
introduction to data scienceintroduction to data science
introduction to data sciencebhavesh lande
 
Data Science Training | Data Science For Beginners | Data Science With Python...
Data Science Training | Data Science For Beginners | Data Science With Python...Data Science Training | Data Science For Beginners | Data Science With Python...
Data Science Training | Data Science For Beginners | Data Science With Python...Simplilearn
 
Data Science Training | Data Science Tutorial | Data Science Certification | ...
Data Science Training | Data Science Tutorial | Data Science Certification | ...Data Science Training | Data Science Tutorial | Data Science Certification | ...
Data Science Training | Data Science Tutorial | Data Science Certification | ...Edureka!
 
Data Science Tutorial | Introduction To Data Science | Data Science Training ...
Data Science Tutorial | Introduction To Data Science | Data Science Training ...Data Science Tutorial | Introduction To Data Science | Data Science Training ...
Data Science Tutorial | Introduction To Data Science | Data Science Training ...Edureka!
 
Introduction to Data Science
Introduction to Data ScienceIntroduction to Data Science
Introduction to Data ScienceEdureka!
 
What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...
What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...
What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...Edureka!
 
Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...
Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...
Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...Edureka!
 
What Is Data Science? | Introduction to Data Science | Data Science For Begin...
What Is Data Science? | Introduction to Data Science | Data Science For Begin...What Is Data Science? | Introduction to Data Science | Data Science For Begin...
What Is Data Science? | Introduction to Data Science | Data Science For Begin...Simplilearn
 
Introduction on Data Science
Introduction on Data ScienceIntroduction on Data Science
Introduction on Data ScienceEdureka!
 
Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...
Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...
Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...Edureka!
 
Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...
Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...
Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...Edureka!
 
Introduction to Data Science.pptx
Introduction to Data Science.pptxIntroduction to Data Science.pptx
Introduction to Data Science.pptxVrishit Saraswat
 
Data science presentation 2nd CI day
Data science presentation 2nd CI dayData science presentation 2nd CI day
Data science presentation 2nd CI dayMohammed Barakat
 
Introduction to Python for Data Science
Introduction to Python for Data ScienceIntroduction to Python for Data Science
Introduction to Python for Data ScienceArc & Codementor
 
Introduction to Data Science
Introduction to Data ScienceIntroduction to Data Science
Introduction to Data ScienceSrishti44
 
Data science presentation
Data science presentationData science presentation
Data science presentationMSDEVMTL
 

What's hot (20)

Introduction to data science.pptx
Introduction to data science.pptxIntroduction to data science.pptx
Introduction to data science.pptx
 
introduction to data science
introduction to data scienceintroduction to data science
introduction to data science
 
Data Science Training | Data Science For Beginners | Data Science With Python...
Data Science Training | Data Science For Beginners | Data Science With Python...Data Science Training | Data Science For Beginners | Data Science With Python...
Data Science Training | Data Science For Beginners | Data Science With Python...
 
Data Science Training | Data Science Tutorial | Data Science Certification | ...
Data Science Training | Data Science Tutorial | Data Science Certification | ...Data Science Training | Data Science Tutorial | Data Science Certification | ...
Data Science Training | Data Science Tutorial | Data Science Certification | ...
 
Data Science Tutorial | Introduction To Data Science | Data Science Training ...
Data Science Tutorial | Introduction To Data Science | Data Science Training ...Data Science Tutorial | Introduction To Data Science | Data Science Training ...
Data Science Tutorial | Introduction To Data Science | Data Science Training ...
 
Introduction to Data Science
Introduction to Data ScienceIntroduction to Data Science
Introduction to Data Science
 
What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...
What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...
What Is Data Science? Data Science Course - Data Science Tutorial For Beginne...
 
Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...
Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...
Data Science Tutorial | What is Data Science? | Data Science For Beginners | ...
 
Data Science
Data ScienceData Science
Data Science
 
What Is Data Science? | Introduction to Data Science | Data Science For Begin...
What Is Data Science? | Introduction to Data Science | Data Science For Begin...What Is Data Science? | Introduction to Data Science | Data Science For Begin...
What Is Data Science? | Introduction to Data Science | Data Science For Begin...
 
Introduction on Data Science
Introduction on Data ScienceIntroduction on Data Science
Introduction on Data Science
 
Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...
Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...
Data Science For Beginners | Who Is A Data Scientist? | Data Science Tutorial...
 
Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...
Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...
Data Scientist Roles and Responsibilities | Data Scientist Career | Data Scie...
 
Introduction to Data Science.pptx
Introduction to Data Science.pptxIntroduction to Data Science.pptx
Introduction to Data Science.pptx
 
Data science presentation 2nd CI day
Data science presentation 2nd CI dayData science presentation 2nd CI day
Data science presentation 2nd CI day
 
Data Science
Data ScienceData Science
Data Science
 
Introduction to Python for Data Science
Introduction to Python for Data ScienceIntroduction to Python for Data Science
Introduction to Python for Data Science
 
Introduction to Data Science
Introduction to Data ScienceIntroduction to Data Science
Introduction to Data Science
 
Data science presentation
Data science presentationData science presentation
Data science presentation
 
Data science - An Introduction
Data science - An IntroductionData science - An Introduction
Data science - An Introduction
 

Similar to Introduction of Data Science

Similar to Introduction of Data Science (20)

Data mining
Data miningData mining
Data mining
 
The Convergence of Data & Digital: Mapping Out a Cohesive Strategy for Maximu...
The Convergence of Data & Digital: Mapping Out a Cohesive Strategy for Maximu...The Convergence of Data & Digital: Mapping Out a Cohesive Strategy for Maximu...
The Convergence of Data & Digital: Mapping Out a Cohesive Strategy for Maximu...
 
Göteborg university(condensed)
Göteborg university(condensed)Göteborg university(condensed)
Göteborg university(condensed)
 
data.2.pptx
data.2.pptxdata.2.pptx
data.2.pptx
 
Applications of Semantic Technology in the Real World Today
Applications of Semantic Technology in the Real World TodayApplications of Semantic Technology in the Real World Today
Applications of Semantic Technology in the Real World Today
 
demo AI ML.pptx
demo AI ML.pptxdemo AI ML.pptx
demo AI ML.pptx
 
dell_ml_rm.ppt
dell_ml_rm.pptdell_ml_rm.ppt
dell_ml_rm.ppt
 
dell_ml_rm.ppt
dell_ml_rm.pptdell_ml_rm.ppt
dell_ml_rm.ppt
 
Big_Data_ML_Madhu_Reddiboina
Big_Data_ML_Madhu_ReddiboinaBig_Data_ML_Madhu_Reddiboina
Big_Data_ML_Madhu_Reddiboina
 
Data-Mining-ppt (1).pptx
Data-Mining-ppt (1).pptxData-Mining-ppt (1).pptx
Data-Mining-ppt (1).pptx
 
Data-Mining-ppt.pptx
Data-Mining-ppt.pptxData-Mining-ppt.pptx
Data-Mining-ppt.pptx
 
Big Data Analytics : Understanding for Research Activity
Big Data Analytics : Understanding for Research ActivityBig Data Analytics : Understanding for Research Activity
Big Data Analytics : Understanding for Research Activity
 
What Is Artificial Intelligence? Part 1/10
What Is Artificial Intelligence? Part 1/10What Is Artificial Intelligence? Part 1/10
What Is Artificial Intelligence? Part 1/10
 
Data Mining
Data MiningData Mining
Data Mining
 
Datascience.pptx
Datascience.pptxDatascience.pptx
Datascience.pptx
 
data mining
data miningdata mining
data mining
 
GraphTour 2020 - Graphs & AI: A Path for Data Science
GraphTour 2020 - Graphs & AI: A Path for Data ScienceGraphTour 2020 - Graphs & AI: A Path for Data Science
GraphTour 2020 - Graphs & AI: A Path for Data Science
 
Haystax Technology - About Us
Haystax Technology - About UsHaystax Technology - About Us
Haystax Technology - About Us
 
Summit slide loop ny
Summit slide loop nySummit slide loop ny
Summit slide loop ny
 
Talk
TalkTalk
Talk
 

Recently uploaded

一比一原版阿德莱德大学毕业证成绩单如何办理
一比一原版阿德莱德大学毕业证成绩单如何办理一比一原版阿德莱德大学毕业证成绩单如何办理
一比一原版阿德莱德大学毕业证成绩单如何办理pyhepag
 
Pre-ProductionImproveddsfjgndflghtgg.pptx
Pre-ProductionImproveddsfjgndflghtgg.pptxPre-ProductionImproveddsfjgndflghtgg.pptx
Pre-ProductionImproveddsfjgndflghtgg.pptxStephen266013
 
一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理
一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理
一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理pyhepag
 
AI Imagen for data-storytelling Infographics.pdf
AI Imagen for data-storytelling Infographics.pdfAI Imagen for data-storytelling Infographics.pdf
AI Imagen for data-storytelling Infographics.pdfMichaelSenkow
 
Toko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra Malang
Toko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra MalangToko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra Malang
Toko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra Malangadet6151
 
Generative AI for Trailblazers_ Unlock the Future of AI.pdf
Generative AI for Trailblazers_ Unlock the Future of AI.pdfGenerative AI for Trailblazers_ Unlock the Future of AI.pdf
Generative AI for Trailblazers_ Unlock the Future of AI.pdfEmmanuel Dauda
 
如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一
如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一
如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一fztigerwe
 
一比一原版西悉尼大学毕业证成绩单如何办理
一比一原版西悉尼大学毕业证成绩单如何办理一比一原版西悉尼大学毕业证成绩单如何办理
一比一原版西悉尼大学毕业证成绩单如何办理pyhepag
 
Genuine love spell caster )! ,+27834335081) Ex lover back permanently in At...
Genuine love spell caster )! ,+27834335081)   Ex lover back permanently in At...Genuine love spell caster )! ,+27834335081)   Ex lover back permanently in At...
Genuine love spell caster )! ,+27834335081) Ex lover back permanently in At...BabaJohn3
 
Aggregations - The Elasticsearch "GROUP BY"
Aggregations - The Elasticsearch "GROUP BY"Aggregations - The Elasticsearch "GROUP BY"
Aggregations - The Elasticsearch "GROUP BY"John Sobanski
 
如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一
如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一
如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一0uyfyq0q4
 
ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp Number 24/7
ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp  Number 24/7ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp  Number 24/7
ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp Number 24/7gragkhusi
 
Fuzzy Sets decision making under information of uncertainty
Fuzzy Sets decision making under information of uncertaintyFuzzy Sets decision making under information of uncertainty
Fuzzy Sets decision making under information of uncertaintyRafigAliyev2
 
如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一
如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一
如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一hwhqz6r1y
 
NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...
NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...
NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...Amil baba
 
edited gordis ebook sixth edition david d.pdf
edited gordis ebook sixth edition david d.pdfedited gordis ebook sixth edition david d.pdf
edited gordis ebook sixth edition david d.pdfgreat91
 
1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证
1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证
1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证ppy8zfkfm
 
How I opened a fake bank account and didn't go to prison
How I opened a fake bank account and didn't go to prisonHow I opened a fake bank account and didn't go to prison
How I opened a fake bank account and didn't go to prisonPayment Village
 

Recently uploaded (20)

一比一原版阿德莱德大学毕业证成绩单如何办理
一比一原版阿德莱德大学毕业证成绩单如何办理一比一原版阿德莱德大学毕业证成绩单如何办理
一比一原版阿德莱德大学毕业证成绩单如何办理
 
Pre-ProductionImproveddsfjgndflghtgg.pptx
Pre-ProductionImproveddsfjgndflghtgg.pptxPre-ProductionImproveddsfjgndflghtgg.pptx
Pre-ProductionImproveddsfjgndflghtgg.pptx
 
一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理
一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理
一比一原版(Monash毕业证书)莫纳什大学毕业证成绩单如何办理
 
123.docx. .
123.docx.                                 .123.docx.                                 .
123.docx. .
 
AI Imagen for data-storytelling Infographics.pdf
AI Imagen for data-storytelling Infographics.pdfAI Imagen for data-storytelling Infographics.pdf
AI Imagen for data-storytelling Infographics.pdf
 
Toko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra Malang
Toko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra MalangToko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra Malang
Toko Jual Viagra Asli Di Malang 081229400522 COD Obat Kuat Viagra Malang
 
Generative AI for Trailblazers_ Unlock the Future of AI.pdf
Generative AI for Trailblazers_ Unlock the Future of AI.pdfGenerative AI for Trailblazers_ Unlock the Future of AI.pdf
Generative AI for Trailblazers_ Unlock the Future of AI.pdf
 
如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一
如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一
如何办理哥伦比亚大学毕业证(Columbia毕业证)成绩单原版一比一
 
Abortion pills in Dammam Saudi Arabia// +966572737505 // buy cytotec
Abortion pills in Dammam Saudi Arabia// +966572737505 // buy cytotecAbortion pills in Dammam Saudi Arabia// +966572737505 // buy cytotec
Abortion pills in Dammam Saudi Arabia// +966572737505 // buy cytotec
 
一比一原版西悉尼大学毕业证成绩单如何办理
一比一原版西悉尼大学毕业证成绩单如何办理一比一原版西悉尼大学毕业证成绩单如何办理
一比一原版西悉尼大学毕业证成绩单如何办理
 
Genuine love spell caster )! ,+27834335081) Ex lover back permanently in At...
Genuine love spell caster )! ,+27834335081)   Ex lover back permanently in At...Genuine love spell caster )! ,+27834335081)   Ex lover back permanently in At...
Genuine love spell caster )! ,+27834335081) Ex lover back permanently in At...
 
Aggregations - The Elasticsearch "GROUP BY"
Aggregations - The Elasticsearch "GROUP BY"Aggregations - The Elasticsearch "GROUP BY"
Aggregations - The Elasticsearch "GROUP BY"
 
如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一
如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一
如何办理滑铁卢大学毕业证(Waterloo毕业证)成绩单本科学位证原版一比一
 
ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp Number 24/7
ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp  Number 24/7ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp  Number 24/7
ℂall Girls Balbir Nagar ℂall Now Chhaya ☎ 9899900591 WhatsApp Number 24/7
 
Fuzzy Sets decision making under information of uncertainty
Fuzzy Sets decision making under information of uncertaintyFuzzy Sets decision making under information of uncertainty
Fuzzy Sets decision making under information of uncertainty
 
如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一
如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一
如何办理澳洲悉尼大学毕业证(USYD毕业证书)学位证成绩单原版一比一
 
NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...
NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...
NO1 Best Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialist I...
 
edited gordis ebook sixth edition david d.pdf
edited gordis ebook sixth edition david d.pdfedited gordis ebook sixth edition david d.pdf
edited gordis ebook sixth edition david d.pdf
 
1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证
1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证
1:1原版定制利物浦大学毕业证(Liverpool毕业证)成绩单学位证书留信学历认证
 
How I opened a fake bank account and didn't go to prison
How I opened a fake bank account and didn't go to prisonHow I opened a fake bank account and didn't go to prison
How I opened a fake bank account and didn't go to prison
 

Introduction of Data Science