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6 years ago
Carmel's blog post on Delivering a Great Presentation inspired me to think about how to become a better teacher/presenter. Thanks to our weekly Development and Research meetings, which covers a wide range of topics from understanding our products, presenting ideas, improving presentations and rehearsing seminars/courses, I am more aware of where a great presentation/teaching comes from. I roughly summarize the secret recipe in five words: goal, prepare, engage, visual, practice. Why do we talk? What is the kn...
6 years ago
Note: It is a paid software. However, it is FREE for students! Tableau is a drag-and-drop data analytical software that helps individuals create engaging visualizations and comprehensive data dashboards. It is a great tool to understand our products from multiple perspectives such as daily operations, user engagement, and campaign effectiveness. It also benefits researchers by offering a quick prototype of study analysis such as survey outputs. Pros: No coding is needed, though the design of measurement is necessary As long as you have some experien...
6 years ago
This is a screenshot of the D3 interactive streamgraph of Vialogues 6973, a long (>20 min) video named “anthro of YouTube” with 116 total comments. Please feel free to play with the interactive version of prototype here. It is a visual illustration of concept flows of a discussion for its corresponding video, as it shows the change and switch of discussion concepts along with the video time stream. Only ...
6 years ago
This afternoon, Manav, Mason and I attended a HCI seminar by Professor Daniel Fallman, hosted by Columbia University's Computer Science department. It is interesting to know how similar the design approach is for science and education. Data is good, but is it almighty? What makes a good human computer interaction (HCI) design? Design thinking is the KEY Adopting the-state-of-art computer technology, the creati...
6 years ago
Today I presented my first D&R with Dr. Sharon Hsiao on semantic content modeling. Thank you all for your questions, feedback and actively taking part in "charade"! Your questions will help us solve tougher problems! In case you are wondering how to produce/code statistical graphs and calculate topic coherence, please feel free to take advantage of the module Text Mining on Vialogues I recently built. The first block "topic modeling theories and concepts" contains tutorial and papers regarding the algorithm LDA as well as interesti...
While searching for a proper visualization to illustrate an example in research finding, I came across a new application, Lyra, by UW Interactive Data Lab. Speaker Arvind Satyanarayan's introduction of Lyra reveals an observation that there are two extremes in the data visualization world. The easy-to-use data visualization tools, such as Excel and Tableau, don't function well for customization, while powerful flexible data visualization tools, e.g. D3, requires some programming knowledge. In this video, Arvind illustrat...
My current research is evaluating topic coherence of discussions and their corresponding videos. Both YouTube and Vialogue discussions are related to the posted videos. However, discussions on YouTube's platform is a forum discussion while Vialogue enables moderated time-stamped discussions. We are trying to research whether on average, the same piece of educational video on the two platforms result in different levels of topic coherence. I am now in the process of solving this problem, and I am fascinated by the approaches. 1) Learn and discover, not reinvent the wheel In the past...