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pl:dydaktyka:semweb:lab-apps [2019/06/27 15:50] |
pl:dydaktyka:semweb:lab-apps [2019/06/27 15:50] (aktualna) |
| ====== Semantic Web Applications: Semantic Wikis ====== |
| __//OBSOLETE//__ |
| ===== Before the lab ===== |
| |
| Software: |
| * [[http://loki.ia.agh.edu.pl/smw|Semantic MediaWiki]] |
| * [[http://loki.ia.agh.edu.pl/lokidev|Loki]] |
| //NOTE: Log in with a username and appropriate password given by a teacher.// |
| |
| ===== Introduction ===== |
| |
| Slides: |
| * [[http://cslab.ia.agh.edu.pl/_media/explicite:explicite20100408:mng-kkr-gjn-explicite-semantic-wikis.pdf?id=explicite%3Aexplicite20100408%3Astart&cache=cache|Lightweight Reasoning in Semantic Wikis]] |
| * [[http://www.slideshare.net/mtgreaves/tutorial-semantic-wikis-and-applications|Tutorial: "Semantic wikis and applications"]] |
| |
| ===== Lab instructions ===== |
| |
| ==== - Semantic Wikis - Introduction ==== |
| * Browse the [[http://www.slideshare.net/mtgreaves/tutorial-semantic-wikis-and-applications|slides]] up to the ''**BREAK**'' slide (no.106). |
| * Read the [[http://semantic-mediawiki.org/wiki/Help:Introduction_to_Semantic_MediaWiki|Introduction]] to the Semantic MediaWiki |
| ==== - Semantic MediaWiki - Categories ==== |
| - Log in with your username and password given by the teacher to the [[http://loki.ia.agh.edu.pl/smw|SMW test installation]]. |
| - Create a page <code>http://loki.ia.agh.edu.pl/smw/index.php/jsi2012/<your-name></code> e.g. <code>http://loki.ia.agh.edu.pl/smw/index.php/jsi2012/wtadrian</code> |
| - Enter the link to the navigation bar |
| - If the page doesn't exist (and it shouldn't exist yet ;-) ) click ''edit this page'' \\ {{:pl:dydaktyka:semantic_web:smw-create.png?w300|}} \\ and shortly describe yourself, e.g. <code> |
| My name is Example student. I am 12 years old. |
| Currently I study at AGH UST, faculty of electrical engineering. |
| I belong to group <put your lab group number here>. The other members of my group are: |
| </code> |
| - Based on the [[http://semantic-mediawiki.org/wiki/Help:Editing|SMW tutorial]], add the page to the **Student** category. |
| - 8-) Paste the wiki page source (markup) in the report. |
| - Create a new page as: <code>http://loki.ia.agh.edu.pl/smw/index.php/AGH-UST/Subjects/subject-name</code> and assign it to the category ''University subject''. |
| - 8-) Paste the wiki page source (markup) in the report. |
| |
| ==== - Semantic MediaWiki - Properties ==== |
| - Based on the [[http://semantic-mediawiki.org/wiki/Help:Properties_and_types|Properties and Types]] section annotate the content of your //Student// page so that it contains the following semantic information about you: |
| * Name (first + last name) |
| * Age |
| * Group (choose one) |
| * 8-) include the updated wikipage source code (markup) in the report. |
| - Edit the created page that belong to the //University subject// category so that it contains the following properties: |
| * lead by |
| * room |
| * duration |
| * 8-) include the updated wikipage source code (markup) in the report. |
| e.g. |
| <code> |
| lead by: [[lead by::prof Ligeza]] |
| room: [[room::B1 121]] |
| duration: [[duration::90]] min |
| </code> |
| |
| ==== - Semantic MediaWiki - Inline queries ==== |
| - Read the manual section on [[http://semantic-mediawiki.org/wiki/Help:Inline_queries|Inline queries]] |
| - Using the **inline queries** add to your page the list of the students that are members of your group |
| - Format the output of the query as unordered list |
| - 8-) Put the query in the report. |
| - Build another query listing the students from your group: |
| - Display it as a table |
| - Sort by age, then by the name |
| - Define a default value which will be displayed if the required field (e.g. age) is empty. |
| - 8-) Put the query in the report. |
| |
| |
| |
| ==== - Loki - Introduction ==== |
| - Go to the [[http://loki.ia.agh.edu.pl/|Loki website]]. |
| - Read the [[http://loki.ia.agh.edu.pl/about.php|About]] page to get to know the system better. |
| - With your username and password log in to [[http://loki.ia.agh.edu.pl/lokidev|Loki installation]]. |
| - Read about the Loki possibilities in [[http://loki.ia.agh.edu.pl/lokidev/start#documentation|Documentation]] section (especially ''pluginapi[1/2]''). |
| |
| ==== - Loki - Use Cases ==== |
| Choose and do one of the following two tasks: (they are also described in [[http://loki.ia.agh.edu.pl/lokidev/piw:start|Loki]]) |
| |
| === - Movie recommendation system === |
| - Create a page of a movie in the ''movie:'' namespace. Assign it to the ''movie'' category. |
| - Describe the movie **in english** using semantic annotations, according to an example ''filmy:poszukiwacze_zaginionej_arki'' in polish and an example ''bookstore:book:the_call_of_cthulhu'' in english (use the movie relations and the ''genre'' attribute (and possibly more if you want)). |
| - Describe shortly one of the actors in the ''person:'' namespace and assign it to the ''actor'' category. |
| - 8-) Copy the wiki pages sources and paste them into the report. |
| |
| === - Geographic Wiki === |
| - Create a page of a city in the ''city:'' namespace. Assign it to the ''city'' category. |
| - Describe the city **in english** using semantic annotations, according to the example: ''miasta:warszawa''. You can add more semantic relations and attributes than in the examples. |
| - Describe shortly the country of this city, assign it to the ''country'' category. |
| - 8-) Copy the wiki pages sources and paste them into the report. |
| |
| ==== - Loki - Semantic Web Standards ==== |
| - Create a page for yourself in the ''user'' namespace, assign it to the ''user'' category. |
| - Read the [[http://loki.ia.agh.edu.pl/lokidev/documentation:pluginapi2#sparql_queries|Plugin API v.2.0]], section on SPARQL. |
| - On your page, build an example SPARQL query which asks for specific kind of movies or cities (you decide what criteria to use in the query!). |
| - Observe the results. 8-) Put the query into the report. |
| - Read the [[http://loki.ia.agh.edu.pl/lokidev/documentation:pluginapi2#rdf_export|Plugin API v.2.0]], section on RDF export. |
| - Export the page you created about a movie or a city. Analyze the exported file. Find the category, relations and attributes that you entered - how are they represented? |
| |
| ==== - Loki - Reasoning ==== |
| In Loki it is possible to embed Prolog code within ''<pl>...</pl>'' tags. Using Prolog code create a set of custom recommendations, e.g.: "Movies, where the leading lady is X and the movie was made before 1940" or "City which is located in a country which is by a sea and is not listed as a member of the EU". |
| - Read the [[http://loki.ia.agh.edu.pl/lokidev/documentation:pluginapi1|Plugin API v.1.0]], section on Prolog. |
| - On your **user** page create a section ''My Recommendations'' |
| - Create a Prolog goal so that the movies interesting for you are found. Optionally, you can define the interesting movies/cities with a Prolog rule and use it directly in the goal. |
| - If you encounter problems, use the [[http://loki.ia.agh.edu.pl/lokidev/documentation:pluginapi2#debug_functions|debug functionality]] of Loki. |
| |
| 8-) Put the goal in the report. :!: NOTE: This can give you an extra point. If you don't do this exercise, you don't loose a point. Just a present for the end... ;-) |
| |
| **NOTE: ** [[http://loki.ia.agh.edu.pl/lokidev/documentation:pluginapi1|Plugin API v.1.0]] and this [[http://cslab.ia.agh.edu.pl/_media/explicite:explicite20100408:mng-kkr-gjn-explicite-semantic-wikis.pdf?id=explicite%3Aexplicite20100408%3Astart&cache=cache|presentation]] may be useful. |
| |
| |
| ===== Control questions ===== |
| * What is the difference between classical wikis a semantic ones? |
| * What are the semantic annotations? |
| * Does the Semantic Media Wiki support category hierarchy? |
| * How to create a subcategory? |
| * How to create a subproperty? |
| |
| ===== If you want to know more ===== |
| Reading: |
| * http://www.readwriteweb.com/archives/top_10_semantic_web_products_of_2010.php |
| * http://www.we-love-the.net/FreeInfluencer/ |
| * http://simile.mit.edu/wiki/Piggy_Bank |
| * http://www.opencalais.com/gallery |