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Hello, my name is
Xiangyu Jin. Xiangyu is my first name, where "Xiang" means flying and "Yu" means universe in Chinese. My last
"jin" means gold in
Chinese. So, my name actually means "gold
flying in universe". Wah! What a fantastic world!
Actually, my parents
gave me this name in memory to Zhou Enlai (Zi Xiangyu), the 1st Premier
of P.R.China, who passed away in Jan. 1976.
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My nick name is D.D.Duck,
a lovely cartoon figure. I have been called so since high school and
through college by my classmates. Another reason for this is that my
hometown, Nanjing,
is famous for its delicious Nanjing Salted Duck.
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I get my B.S. and M.E. from Department of Computer Science, Nanjing University, in 1999 and 2002,
respectively. I am currently a PhD candidate in Department of Computer Science,
University
of Virginia.
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I am currently working with Prof. James French on Information
Retrieval. My recent research focuses on interactive retrieval
techniques such as relevance feedback, especially under multimedia
retrieval environments. I also worked on Chinese text mining and sketch
recognition before. Click here for my publication
list.
Following is the selected projects that I have worked on. Some
projects has its own web page which provides data and source code to
re-implement our experiments.
Skill Mining (Summer 2006, HP Lab, Palo Alto, CA)
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Traditional
expert finding applications based on register-search procedure is both
unreliable and highly cost. We target at mining people's skills (e.g.,
programming skills) via content-analysis of their computing systems.
Signatures captured from the history of the file systems are used to
analyze the user's up to date skills.
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Relevance Feedback in Multimedia Retrieval
(2004-present, Univ. of Virginia)
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The new characteristics introduced by multimedia retrieval
applications make traditional text-oriented relevance feedback
approaches not work well. A lot of new approaches have been proposed to
adapt to these new characteristics. However, different background
research groups tend to follow different traditions within their
communities and, in particular, they often have different standards and
approaches to evaluation. This makes it extremely difficult to fairly
compare and evaluate techniques.
We make a systemic and cross-media study for relevance feedback
techniques in multimedia retrieval applications. Different from most
existing studies, we put a lot of energy on evaluation itself. We study
the ways to achieve consistent evaluation among systems [AMR05]. We also consider practical
constrains of the user [SIGIR06].
For detail information, please visit
Toward Consistent Evaluation (The AFTER Project)
Click here to view the project page
Quantitative Analysis of the
Impact of Judging Inconsistency (The HAR05 Project)
Click here to view the
project page
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Multi-channel CBIR System (2002-present, Univ. of
Virginia)
Click here to view the project page
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We apply multiple viewpoints in
Content-based Image Retrieval (CBIR) environment. We propose a
synthetic retrieval model [MTA05]
which integrates multiple image representations [ISSPA03], multiple retrieval
systems [MIS03], and multiple
query images [MMDB03] to generate
different viewpoints (search results) toward the same information need.
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The
relationship among these information channels and how to effectively
combine them are further studied. We also perform empirical study for
the scalability of this technique [CIVR04].
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Sketch Recognition & User Adaptation (2001-2002,
MSR-Asia & Nanjing Univ.)
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Smart Sketchpad
[ICDAR01] is a prototype for
on-line graphics recognition system. Graphics inputting is a difficult
task for small screen devices such as PDAs. We employ a sketch-based
user interface to provide users a natural, convenient, and efficient
way to input graphic objects by quickly drawing part of their sketchy
shapes [GREC01]. We predict the
user's intention and list candidate graphic objects for user selection.
Smart Sketchpad learns incrementally [IJPRAI04] to adapt to different
user's drawing habit. A user study is also performed [APCHI02]. My master thesis summarizes this work.
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Content-based Image Retrieval
(2000-2002, Nanjing Univ.)
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The semantic gap is a hard nut for
Content-based Image Retrieval applications. Instead of directly mapping
the low-level visual features to high-level semantics, we segment the
images into fixed blocks and assign semantics labels for these blocks
via pre-trained classifiers. Later, high-level image semantics can be
inferred from such mid-level semantic vectors. This approach avoid
possible failures from automatic image segmentation.
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We select 34 image categories from COREL database as the training set.
We segment each image into fixed blocks (16*16) and label each block
(with a unique word at semantic level) by semi-automatic tools. Later
this training data is used to train classifiers over the full COREL
database.
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Chinese Text Mining for Online Publishing System
(1999-2001, Nanjing Univ.)
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WinGPS (Web Information Gathering &
Publication System) is the prototype system of the project
"Multimedia Information Retrieval and Publishing Techniques for
Digital Library". My research was focused on cooperative retrieval
and information filtering [JCST00].
First, user provides the description for the information need by fill
in online forms. Then user-interested information is searched through
existing web search engines. Afterwards, the search results are fused
and download to a local server. These download documents are further
clustered and summarized by sub-topics. Finally, the organized
information is packed and delivered to the user by emails.
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WIPS is a self-driven project I designed as an
integrated online publishing solution for Chinese news media. The huge
volume of published Chinese news media documents (in PS files) are segmented,
re-combined, clustered, indexed, and summarized for online publishing.
A novel Chinese tokenization method is proposed to overcome the
limitation of the dictionary-based approach. The first version join the
the 6th National "Challenge Cup Contest". The commercialized
product (Da Han Ban Tong) still
dominate online publishing industry in China for major news
media.
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Click here
to view my BLOG
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I
put most of my experience of coming to U.S. into web pages. I did
not use commercial BLOG systems since I need flexibility and need to
move them often, plus I need huge space. The dis-advantages is this is
not a real social network and there is no place for visitors to leave
comments.
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HOBBIES
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Ancient Civilization
This ranks my
No.1 hobbie. I am curious to know where we are from and where we are
going. To know the past can help expect the future. It is really
amazing that our ancestors create so advanced civilizations. Such as
Sumerian, Persian, Egypt,
and Maya, etc. There are many mystery remains.
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Guitar &
Choir
I
have my first guitar in high school. Now I am playing with a Washburn acoustic
electronic. I like the sound of guitar although I am not good at it,
:). I am also a guitar player in the "beginner" band "Second
Face". Here are some songs we recently recorded (home, yellow, afterwards,
truly love you). Forgive us
for the poor recording qualityJ.
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My song book is a very
cool place where you can find most guitar pro files.
I
was in choir group since elementary school. Now I am a tenor in the PCA
choir group. Here are some songs I record with an earphone. In order to
record each part of the choir, I do it multiple times and mix together
afterwards. Here are some examples, Cinderella, Youth, Edelweiss, Silent
night.
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Anime
I
like anime. And I am definitely an OP (one piece) fan.
Its plot is so complex and the author keeps the story so tightly
organized. Any tiny clue will be useful later. I had never seen any
similar works before. Dragon ball is long but it is only
"repetitive" in plot. OP is not. It is awesome, hilarious, and
touching. It encourage us never give up our dreams and appreciate your
friendship. I strongly recommend it.
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B-ball
I
like playing b-ball and currently serve as the coordinator of CSSS
b-ball club. I used to play twice or three times per week before.
However due to a knee problem, I has to restrict myself in games these
days, called walking attack and standing defense …
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Travel
I
like traveling. I have traveled (in US) Great
Smoky Mountain,
Assateague, Yellow Stone, Grad Teton, Shenandoah, Blue Ridge, Grand
Canyon, Painted Desert, Bryce Canyon, Zion,
Yosemite, Kings Canyon & Sequoya, Lesson Volcanic, Mt. Rainier,
Mt. Hood, Crater lake … I already visit
around 20 national parks and I wish I could visit all fifty national
parks here one day. I put most of my traveling in my BLOG.
My
dream place is Mideast, Egypt, and Andes
mountain, where ancient civilization resides.
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