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 been greatly advanced. However, in Web search engines, image retrieval primarily relies on words that appear around the image on the web page. This approach tends to have low recall (since an image related to “A” does not always have “A” explicitly written nearby) but high precision (because an image with “A” nearby is rarely unrelated to “A”). Given that precision is usually more important in Web search, this method works well in many cases in Web search.
However, applying the same approach to exclusion queries does not work as effectively. If the system retrieves images where “A” appears nearby but “B” does not, it fails to properly exclude images related to “B” because an image related to “B” might not explicitly have “B” written around it.
To solve this problem, our paper proposes a new method: We produce the result for “A -B” by retrieving the result for “A” and removing images in it that are visually similar to images in the search result of “A B”. Technically, our key contribution is a method for determining the similarity threshold that decides how much to filter out.
The conference was held at a hotel on a beach in Phuket, Thailand.
The presentation format was a combination of a short oral presentation and a poster presentation.
Even after the poster session ended and people had left the other posters, he was still answering to questions.
The presentation is now over.
Japanese snacks were sold everywhere in Phuket.
To Japanese people, this might look like incorrect katakana, but is it actually Thai? By the way, the brand name is “Arigato.”
Are these “Tohusan” soy milk?
Even one hundred people can stay on top safely. (Sorry, only Japanese people know this phrase.)
