Lecture Tagging and Search Motivation Ubiquitous Presenter (UP) is a system designed at UCSD to...
1
Lecture Tagging and Search Motivation Ubiquitous Presenter (UP) is a system designed at UCSD to promote and demonstrate the concept of “active learning.” It also serves as a very useful study aid by putting lecture slides online to be viewed at any time by anyone with a web browser. After using this system both as a student in the classroom and as a member of the development team, I saw the potential for a system of tagging and searching. There are multiple levels of motivation: • It was difficult to pinpoint material in a lecture saved online, because students could not annotate the online notes, such as is possible with standard pencil and paper notes. • The act of tagging each slide in a lecture is a form of active learning. Students should be more likely to absorb the content if they actively tag the lecture material • The ability of computers to “search” for information allows data to be viewed in new and unique ways. By its very nature, the lecture is a linear format of absorbing information, as is a book. Tagging opens up the possibility of organizing material in limitless ways – by topic, importance, etc – which could be more useful in learning than the linear lecture format. James Lintern with Beth Simon and the Ubiquitous Presenter team This is the student’s view of a lecture slide in a standard web browser vs. Implementati on There were two stages to the implementation of this project. The first part was the ability to add tags to slides (see #1 below), and the second part was the ability to search slides for matching tags (see #2 below). Tagging • Tagging was implemented using Web- 2.0-style AJAX code and tags are saved in a flat XML file on the server. • The list of tags for a slide will update in real time if several users are tagging at once. • Users can click on an existing tag to search for other slides tagged the same way Searching Professor uses UP, which puts slides on the web Students “tag” slides with relevant words and phrases Professor prepares lecture using PowerPoint Weeks later, a student wants to study “widgets”, before tags… A mock lecture scenario. One slide talks about “widgets” Student browses entire lecture, not finding what he is looking for Student opens a random lecture from weeks ago With lots of searching by hand, student finds slide! But if a student wants to find “widgets” after tags… Student searches for “widgets” and is promptly shown every slide on the topic! 2 1 • Searching for a tag displays a set of thumbnails of matching slides. • Several options for searching: • search only tags you have added, allowing “personal” annotation unaffected by others • sort chronologically or by tag popularity • Clicking a slide loads the full view of that image in the context of its original lecture, preserving its value as part of a larger concept Conclusions and Future Work stud y this ! Thank you to: The Calit2 Summer Undergrad Research Program The UCSD CSE Department The Ubiquitous Presenter Team • In a very limited “trial run” during a summer school class, students were given the opportunity to tag slides, though the ability to search for tags was not yet implemented. A survey about the usefulness of tagging was also given to this class. • The most common tags were “qf” or “quizfodder” – tags signifying that material was bound to appear on a quiz or test. • Many students complained about the lack of search functionality, confirming that search Is a powerful tool, and that tagging is only useful in cooperation with search. • A final complaint was that there were too many differences in semantics. “qf” and “quizfodder” are two different tags that mean the same thing, for instance. This led to brainstorming about ways to prompt users to tag in certain ways, or to somehow process tags so that related tags would be effectively grouped together. • Now that the system is finished, we hope to see it in use in several full-length classes during the fall. The finished system, along with the regular 10-week quarter should see more use than during summer school. We will continue to take user feedback and use it to adjust the system, and we will continue to survey users to see if the tagging system is actually affecting their classroom experience. • If we can get enough tags for a particular classroom, we hope to experiment with advanced
-
Upload
roland-wilson -
Category
Documents
-
view
222 -
download
1
Transcript of Lecture Tagging and Search Motivation Ubiquitous Presenter (UP) is a system designed at UCSD to...
Lecture Tagging and Search Motivation
Ubiquitous Presenter (UP) is a system designed at UCSD to promote and demonstrate the concept of “active learning.” It also serves as a very useful study aid by putting lecture slides online to be viewed at any time by anyone with a web browser.
After using this system both as a student in the classroom and as a member of the development team, I saw the potential for a system of tagging and searching. There are multiple levels of motivation:
• It was difficult to pinpoint material in a lecture saved online, because students could not annotate the online notes, such as is possible with standard pencil and paper notes.
• The act of tagging each slide in a lecture is a form of active learning. Students should be more likely to absorb the content if they actively tag the lecture material
• The ability of computers to “search” for information allows data to be viewed in new and unique ways. By its very nature, the lecture is a linear format of absorbing information, as is a book. Tagging opens up the possibility of organizing material in limitless ways – by topic, importance, etc – which could be more useful in learning than the linear lecture format.
James Linternwith Beth Simon and the Ubiquitous Presenter team
This is the student’s view of a lecture slide in a standard web browser
vs.
ImplementationThere were two stages to the implementation of this project. The first part was the ability to add tags to slides (see #1
below), and the second part was the ability to search slides for matching tags (see #2 below).
Tagging• Tagging was implemented using Web-2.0-style AJAX code and tags are saved in a flat XML file on the server.
• The list of tags for a slide will update in real time if several users are tagging at once.
• Users can click on an existing tag to search for other slides tagged the same way
Searching
Professor uses UP, which puts
slides on the web
Students “tag” slides with relevant words
and phrases
Professor prepares lecture
using PowerPoint
Weeks later, a student wants to study “widgets”, before tags…
A mock lecture scenario. One slide
talks about “widgets”
Student browses entire lecture, not finding what
he is looking for
Student opens a random lecture from weeks ago
With lots of searching by hand, student finds slide!
But if a student wants to find“widgets” after tags…
Student searches for
“widgets” and is promptly shown every slide on
the topic!
21
• Searching for a tag displays a set of thumbnails of matching slides.
• Several options for searching:
• search only tags you have added, allowing “personal” annotation unaffected by others
• sort chronologically or by tag popularity
• Clicking a slide loads the full view of that image in the context of its original lecture, preserving its value as part of a larger concept
Conclusions and Future Work
study
this!
Thank you to:
The Calit2 SummerUndergrad Research
Program
The UCSD CSEDepartment
The UbiquitousPresenter Team
• In a very limited “trial run” during a summer school class, students were given the opportunity to tag slides, though the ability to search for tags was not yet implemented. A survey about the usefulness of tagging was also given to this class.
• The most common tags were “qf” or “quizfodder” – tags signifying that material was bound to appear on a quiz or test.
• Many students complained about the lack of search functionality, confirming that search Is a powerful tool, and that tagging is only useful in cooperation with search.
• A final complaint was that there were too many differences in semantics. “qf” and “quizfodder” are two different tags that mean the same thing, for instance. This led to brainstorming about ways to prompt users to tag in certain ways, or to somehow process tags so that related tags would be effectively grouped together.
• Now that the system is finished, we hope to see it in use in several full-length classes during the fall. The finished system, along with the regular 10-week quarter should see more use than during summer school. We will continue to take user feedback and use it to adjust the system, and we will continue to survey users to see if the tagging system is actually affecting their classroom experience.
• If we can get enough tags for a particular classroom, we hope to experiment with advanced visualization and navigation methods that are based on the conceptual level of tags rather than the normal chronological style of a lecture.
