Note for installing things without root access in Linux

Useful Environment Variables:

for gcc compiling

LD_LIBRARY_PATH specifies the directories to look for libraries in the run time

LIBRARY_PATH specifies the directories to look for libraries during the linking time

CPATH specifies the directories to look for header files during compiling time (just like -I)

To be continued…

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Building an affective video dataset for emotion elicitation

Emotion Regulation Assistance System based on EEG features and Emotion Recognition, 2013. (This is a detailed description. If you are interested in a short description, please refer to my CV: FengQianliCV.)

The main purpose of this project is to build a neuro-feedback system for emotion regulation. This systems is designed to help training astronauts and soldiers and to help the patients who need to enhance their capability of self-regulating their emotional states. The team of this whole project contains one master’s student and three undergraduates. Our(three undergraduates) work in this project is focusing on building an affective video and image dataset for emotion elicitation. And since I am the leader of the team, all the paperworks of the project is also part of my job.

In case that you may not familiar with this topic, please let me briefly talk about the motivation behind building this video dataset. (If you are not interested in the background, please skip the next two paragraphs.)

To build this system, an algorithm to classify different emotion is required. Then the training data is needed to train the classifier. The training data should be the EEG signal corresponding to different emotional states. To get this training data, we should recording the EEG signal while the participants are in specific emotion we are interested in, that is to say, we need recording EEG signal in an emotion elicitation experiment.

There are multiple ways to elicit emotions: text, music, images, videos, interaction with confederates. Among those methods, emotion elicited in via showing text and listening to the music is relatively weak and limited in categories, which may not be good enough to get good EEG signals for training. Image elicitation is the one used most widely at the time. One can use IAPS, the international affective picture system,  to elicit specific emotion from participants by showing the affective pictures. However, some studies indicate that IAPS does not perform very well among Chinese because of the culture difference. Video is another method used in the elicitation experiment and studies show that it has relatively high ecological validity. However, similar to the images, the current dataset of the affective video is not for Chinese. Based on the above background, building our own affective video dataset may be a good idea for this project.

 

To build the video dataset, over 100 video clips are firstly being selected from online resources in mainland, China to form a candidate video pool. These videos contains films, TV shows and family videos sharing on the internet. Then we (the three undergraduates group) go through all the videos and marked them as high, medium and low depends on the elicitation intensity we feel. The “high” videos marked by any of us will enter to the next candidate video pool for evaluation experiment. The second candidate pool contains 40 video clips.

The evaluation experiment is online. After contact with any of the three group members, an interested participant will get a consent form, a TAS-20 (Toronto Alexithymia scale) and a BDI (Beck Depression Inventory), a detailed experiment instruction and a set of URLs of videos through emails. The target participants are the undergraduate students between age 18-22, which is the same group as the expected participants in the following elicitation experiment. The evaluation experiments is advertised during the winter vacation in 2013 to ensure the participants are not disturbed by the schooling pressure. 29 undergraduates from 19 universities attended this experiments.

The self-report scale used in the online evaluation experiment contains 3 sections.

  1. a 7-point Likert scale for 6 basic emotions. The participants are asked to rate the strongest feeling of emotion during the video playing. “0” is described as I didn’t experience any of this emotion; “8” is described as the emotion I felt in this video is the strongest I have ever experienced in my life.
  2. a 5-point Self-Assessment Manikins(SAM) scale for valence and arousal self-report evaluation. In this section the participants are also asked to rate the valence and arousal they experienced during the video playing.
  3. a section for the order of elicited emotions. In this project, we are more interested in eliciting single emotion rather than compound or mixed emotions. But only with above two sections, it is impossible to know whether the reported emotion are elicited simultaneously or independently(in time). So we ask participants to order the emotion in the order of time. “1” indicates the firstly elicited emotion, “2” is the second one and so forth. Replication is allowed if the emotions are elicited simultaneously.

After the experiment, 16 videos are selected according to their means, variance, and if the target emotion is mixed with others.

The dataset also contains affective images section, which is based on the IAPS(International Affective Pictures System), but excludes the images that do not effectively elicit target emotions in our participants.

This project attended the 2013 “Challenge Cup” Undergraduate Extracurricular Science and Technology Works Competition in Tianjin University and got the 3rd prize.

The very first post, reasons behind this

Hi nice to meet you!

I’m very glad that you can find this post. This is my first post so it should be really hard to find. And in this one, I would like to talk about why I want to start this blog.

The very first reason is I want to record my development, the changing of my life and my thoughts. You may ask, then is this like your diary? Well, kind of, especially for the purpose of recording the life and thoughts. I think it might be an interesting(hopefully not embarrassing) thing to read 5 or 10 years later.

Another reason is for accepting myself. And I think that is the difference between a diary and this blog. For me diary can be a very very personal and private thing. I may not want others to read that. But this one obviously, anyone can read it and comment on it or even criticize it. My thoughts may not be correct, my understanding may be kind of naive, but they are parts of me. I want to accept them by writing them down and sharing with others.

Sharing my thoughts and understanding is another reason why I start this. As a person lived in China for over 20 years and start my life in the US, I know that the many people want to know China but there is a “great wall”. If I can be a bridge across the China and the rest of the world, that will be a great thing in my life.

Besides, I think it may be a good chance to present myself in another way to whom may be interested in me. This should be a very good platform to show different perspectives of me.

Oh and I want to practice my writing skills as well;).

OK…one…two…three…four, it’s enough. Adding more will be too much for both you and me. Let’s finish it here.

The next one should be about some of my experience in undergraduate research plus my understandings about it. Hopefully I can post it during this Christmas. Oh taking this chance, how about talking about the undergraduate research in Chinese universities? It’s gonna be in a personal(and student) perspective and should be kind of limited since I only studied in one university and my friends are not in everywhere. But we’ll see.

And have a nice day!