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research announcement
Students gave presentation at DEIM2025

2025.3.19
Students gave presentation at DEIM2025

Three students from the lab gave presentations on their research at DEIM2025 (a domestic forum without peer-review). This year, the following three students gave presentation. Liuyun Ling: “Identifying Accounts Corresponding to Hashtags on Social Media through User Graphs” Souta Ashikaga: “Software Library Recommendation Based on Relevance Estimation to Domain Specific Categories Using Metadata Similarity and Co-occurrence” Kenta Taniguchi: “Predicting player churn by taking into account other gameplay patterns” DEIM of…
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message from the group
New Year Party (2025)

2025.1.14
New Year Party (2025)

We celebrated this year’s New Year’s party with sukiyaki!

research announcement
Presentation of the research by Masafumi Iwanaga at IEEE BigData 2024

2024.12.18
Presentation of the research by Masafumi Iwanaga at IEEE BigData 2024

This presentation was about a method of suggesting the topic to SNS users. However, it is not about topic recommendations to the orginary users, but rather about suggesting the next topic for users who act as influencers. For example, a user who has gained a steady number of followers through game streaming can’t just keep playing the same game forever to maintain their audience. They eventually need to shift to…
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research announcement
Research Presentation by Yixin Zhang at ACM Multimedia Asia 2024

2024.12.3
Research Presentation by Yixin Zhang at ACM Multimedia Asia 2024

Yixin Zhang of our research group gave presentation at ACM Multimedia Asia 2024. This presentation focused on ingredient recognition from images in recipe data that describe cooking procedures. Recipe data consists of a sequence of descriptions for each cooking step. As a result, the image for each step often contains ingredients that also appeared in previous steps. However, because recipes can include branching and merging steps, ingredients do not always…
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research announcement
Eisaku Yoshikawa gave presentation at ACM International Conference on Multimedia Retrieval (ICMR) 2024

2024.6.11
Eisaku Yoshikawa gave presentation at ACM International Conference on Multimedia Retrieval (ICMR) 2024

Eisaku Yoshikawa of our group gave presentation at ACM International Conference on Multimedia Retrieval (ICMR) 2024. The presentation focused on “exclusion queries” in image retrieval. In this context, exclusion queries refers to the queries to search for images related to “A” but not to “B,” similar to how Web search engines interpret queries like “A -B.” In recent years, automatic image captioning (automatic generation of text descriptions of images) has…
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research announcement
Presentation by Hirotaka Nagashima at WWW Conference 2024

2024.5.17
Presentation by Hirotaka Nagashima at WWW Conference 2024

Hirotaka Nagashima from our group gave a presentation at The Web Conference 2024. The presentation was about identification of descriptions that indicate the “expiration time of information value.” For example, suppose a text includes phrases like those below. “Please submit application by 17:00 tomorrow. “Live streaming starting 19:00 tonight!” The informational value of such a text must largely decrease after the time described in these descriptions. Therefore, if we can…
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message from the group
Farewell party (2024)

2024.3.26
Farewell party (2024)

We held a farewell party for our graduating members on March 25, 2024. Three members graduates this March: Mizuki Hisatomi, Shuhei Kobayashi, and Mamoru Yamakawa. While last year’s farewell gift was original T-shirts featuring the stamp of Professor Tajima’s face, this year we presented original certificates to congratulate the three graduates. Additionally, personalized gifts matching their respective research topics were also given. Congratulations on your graduation! Wishing you all the…
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research announcement
Tetsuya Sasaoka gave presentation at ACM Conference on Intelligent User Interfaces (IUI) 2024

2024.3.19
Tetsuya Sasaoka gave presentation at ACM Conference on Intelligent User Interfaces (IUI) 2024

Tetsuya Sasaoka of our group gave presentation at ACM Conference on Intelligent User Interfaces (IUI) 2024, which was held in Greenville, South Caroline in United States. There is a waterfall right in the center of the city. The conference venue is a hotel behind the Bank of America building seen in the middle of the photo below. Our presentation was a poster presentation. Our research focuses on searching for documents…
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research announcement
Presentation by students at DEIM 2024

2024.3.5
Presentation by students at DEIM 2024

The four students of our group listed below gave presentation at the 16th Forum on Data Engineering and Information Management(DEIM2024). Yixin Zhang: “Analysis of visual characteristics of ingredients in recognition of images in recipe procedure instruction” Mamoru Yamakawa: “Evaluation of users’ follow action models based on real SNS data” Mizuki Hisatomi: “Grouping Web browser tabs into tasks” Akitaka Yamashita: “SNS user location estimation from rain data” Similarly to the several…
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message from the group
New Year Party (2024)

2024.1.10
New Year Party (2024)

Happy New Year! We held our New Year’s party on January 10th, 2024. The venue was a Chinese restaurant in Mototanaka. With the deadlines for undergraduate and master’s theses at the end of January, it was time to start writing, and we checked on each other’s progress. At the same time, it was also a celebration for submitting the first drafts of our papers to be presented at DEIM from…
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research announcement
Presentation of the research by Mamoru Yamakawa at ACM HT 2023

2024.9.6
Presentation of the research by Mamoru Yamakawa at ACM HT 2023

Makoto Yamakawa presented his research findings at the ACM Conference on Hypertext and Social Media. This year, the conference was held in Rome. The current route from Japan to Europe looks like this because we can’t fly over Russia. This is one of the entrances to the conference venue. (Although we used a different entrance for this conference.) It is located right next to Piazza di Spagna and is sometimes…
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message from the group

2023.4.19
Welcome Party for New Members (2023)

On April 19, 2023, we held a welcome party for the new members joining the lab. The new members are Akitaka Yamashita (B4) Yoshihiro Hirao (B4) Tianyou Gao (M1) Liuyun Ling (M1, a research student since October) Rumi Imura (secretary) As a result, the number of students in the lab has increased by two compared to last year, bringing the total to ten. Due to COVID-19, we were unable to…
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message from the group
Farewell Party (2023)

2023.3.27
Farewell Party (2023)

On March 23, 2023, we held a farewell party for the graduating members. This year, two members, Erina Yamakawa and Eisaku Yoshikawa, graduated from the lab. Unlike last year, we were able to hold a dinner gathering since the COVID-19 situation had stabilized. Last year, a mug printed with a seal of Professor Tajima’s face was given as a farewell gift. This year, to celebrate their graduation, they received original…
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research announcement
Eisaku Yoshikawa was awarded the best interactive presentation award at DEIM 2023

2023.3.23
Eisaku Yoshikawa was awarded the best interactive presentation award at DEIM 2023

Eisaku Yoshikawa received the Best Interactive Award at the 15th Forum on Data Engineering and Information Management (DEIM 2023) for his presentation. This year, three presentations were selected for the top award out of 342 poster presentations. His research focuses on exclusion queries for image searches. Exclusion queries are widely used in general web search engines. For example, if someone wants to search for information about the animal “jaguar,” but…
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research announcement
Research presentation by students at DEIM 2023

2023.3.8
Research presentation by students at DEIM 2023

Our lab members present their research every year at the Forum on Data Engineering and Information Management (DEIM), a domestic forum held in early March. For the past three years, DEIM was held online due to COVID-19. However, DEIM 2023 marked the first partial in-person event in four years. Six students of our group gave presentations this year: Erina Yamakawa: “Similarity Measurement for Each Component Considering the Meaning of Triplets”…
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