Good practices of learning MOOCs

MOOCs - "On average 22 mins to answer the questions on wherever the students from can clearly find out common mistakes that students take (2000 much easier to determine than 2 in 200 offline classes)" [1-2]

Learning paradigm is changing: Lecture -> Mastery teaching -> Individual teaching (Lifelong needs for learning and adapt to the fast changing tech world)

Spend more time in interacting and creative improvement, learn by themselves with MOOCs

Several tips from a Facebook friend which are quite useful to me:

1. Check the introduction video
2. Do not register if you think you could not finish it
3. Learn it at the same time of the day as an offline course and get rid of any distraction during the course
4. Participate in learners' community
5. Do peer grading which actually help you to learn more by knowing the thoughts of other students
6. Tweet your registration (Is it improving success rate?? Interesting research question maybe...)
7. Restrict the quantity of MOOCs and improve the quality of your performance of MOOCs

Several take away from good MOOCs (let me continued and finished them):

1. Encouragement from the lecturer is really important in the start and end of the video lectures.
2. Make things clear and easy since there's no direct interaction of the lecture (and diversity of learners' levels).

My learnt MOOCs:

(O) Introduction to recommendation systems (Coursera)

(U) Probability : MITx: 6.041x Introduction to Probability - The Science of Uncertainty (edx)

(F) Statistics : Data to Insight (Future Learn)

(U) Social Network Analysis : Social Network Analysis (Coursera)

(F) Data Mining : Data Mining with Weka & More Data Mining with Weka

(F) Introduction to SAP HANA (OpenSAP)

(F) Introduction to SW development on SAP HANA (OpenSAP)

U: Unfinished
F: Finished

References:

[1]. http://www.ted.com/talks/daphne_koller_what_we_re_learning_from_online_education?language=en#t-1214445

[2]. http://www.ted.com/talks/salman_khan_let_s_use_video_to_reinvent_education

Semantic Web Practice - simple SPARQL example in Protege

Suppose that you have your personal profile ontology as displayed below, and the individual -> guangyuan-piao has data type properties:

• guangyuan-piao→foaf:age→28
• guangyuan-piao→foaf:familyName→"Piao"
• guangyuan-piao→foaf:givenName→"Guangyuan"

Practice#1 : select organizations and persons which has the relationship "member".

 1:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
 2:  SELECT ?organization ?person  
 3:     WHERE { ?organization foaf:member ?person }  

This  should return all organization-person pairs with the relationship "member". The query result is as below:

• DERI - guangyuan-piao
• Yonsei_Univeristy - guangyuan-piao
• Jilin_University - guangyuan-piao

Practice#2 : select person with his/her age who has family name "piao".

1:  PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>  
2:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
3:  SELECT ?person ?age  
4:       WHERE { ?person foaf:age ?age .  
5:               ?person foaf:familyName "Piao"^^xsd:string  
6:       }  

Practice#3 : select full name who at the age of 28.

1:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
2:  SELECT ( CONCAT(?G," ",?F) AS ?name)  
3:       WHERE { ?P foaf:givenName ?G; foaf:familyName ?F .  
4:               ?P foaf:age 28  
5:       }  

Practice#4 : select person who's family name start with "Pi".

1:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
2:  SELECT ?person  
3:      WHERE { ?person foaf:familyName ?fn .  
4:              FILTER regex(?fn, "^Pi")   
5:      }  

Q: What if change the regex(?fn, "^Pi") to regex(?fn, "^pi")?
A: It will not return any value since it's case-sensitive. But you could give the case-insensitive option to get the result.

1:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
2:  SELECT ?person  
3:      WHERE { ?person foaf:familyName ?fn .  
4:          FILTER regex(?fn, "^pi", "i")   
5:      }  

Practice#5 : select person who's age is over 29.

1:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
2:  SELECT ?person  
3:      WHERE { ?person foaf:age ?age .  
4:          FILTER (?age > 29)   
5:      }  

There's none of the result since guangyuan-piao's age is 28.

Practice#6 : select individual who has Person class.

1:  PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>  
2:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
3:  SELECT ?person  
4:       WHERE { ?person rdf:type foaf:Person }  

This is an easy SPARQL and SPARQL also provide keyword "a" which is alternative for IRI-http://www.w3.org/1999/02/22-rdf-syntax-ns#type (case sensitive) looks neat than before.

1:  PREFIX foaf: <http://xmlns.com/foaf/0.1/>  
2:  SELECT ?person  
3:       WHERE { ?person a foaf:Person }  

Other Examples:

# Example: Select all MusicArtists and Bands from DBpedia
# Example: How to query SPARQL with spaces?