I participated in Kevin Murphy’s talk at Data Science Institute (DSI) - http://datascience.columbia.edu/events/calendar on September 5th. Kevin Murphy is a renowned machine learning researcher and currently serves as a Research Scientist at Google.In his talk, he introduced some recent work related to image and text analysis. As the title of his seminar, “Towards Machines that Perceive and Communicate”, implies, h...
In my last blog post and presentation I referenced a study, Understanding user behavior in large-scale video-on-demand systems,  by Yu et al. I thought this study had some interesting analyses which could be applied to data from Vialogues. In particular I wanted to look at the relationship between the popularity of a Vialogue measured by the number of page visits and the session lengths or how long people spend on the Vialogue page.Below is the distribution of Vialogue video lengths.
Here are the slides for our presentation!This past month the research team has been working on analyzing the usage and behavior on some of our EdLab Platforms. This work will be presented during this Tuesday’s (8/29) Development and Research Meeting. We will be considering the pur...
a month ago
According to this article by Think with Google, YouTube users use search to find videos when they have specific things to find. They use the Related feature to explore videos under a general topic. And Alvaro told me the other day that when people use search, some of them know what they are exactly looking for whereas others don't. This results in different search phrase and behaviors of accessing the search results. I am interested in understanding:
My current project is to analyze discussions on Vialogues. There are several directions that the research project could lead. I’m coding the conversations with a focus on fundamental theoretical frameworks.There are multiple coding systems in previous research studies that serves different purposes from various perspectives. I would like to observe the knowledge construction process in collaborative learning through the developmental psychological perspective. In social constructivism, there is the knowledge constructed t...
2 months ago
As we continue to mine data to help us better understand Edlab educational apps, library services, and users/learners/patrons, it is helpful to have a conceptual understanding about various kinds of analytics and their strengths for design and decision making. I ran into this presentation “
2 months ago
Has "personalized learning" been oversold? A new Rand study suggests that the recent wave of enthusiasm for personaized learned may be unjustified by the available empirical evidence. The Rand researchers found only modest gains in math achievement and no significant dif...
Check out the EdLab TwitterRelated Works1. Using Graph-based Modelling to explore changes in students' affective states during exploratory learning tasks