Michio Iijima

Title: Michio Iijima: Innovator in Document Retrieval Systems

Introduction

Michio Iijima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of data retrieval and search systems. With a total of 6 patents to his name, Iijima's work has had a considerable impact on how information is accessed and processed.

Latest Patents

Iijima's latest patents include a document retrieval system and retrieval method. This system comprises a storage device and a retrieval server. The storage device stores document data, including documents compressed to correspond to various divided document groups. It also includes indexes indicating correspondence relations between partial character strings for retrieving documents and first identifiers indicating the documents. The retrieval server retrieves, in response to an input of a retrieval character string, a second identifier corresponding to a partial character string included in the retrieval character string. It decompresses document data in a document group, retrieves a first identifier corresponding to the partial character string, obtains document data corresponding to the retrieved first identifier, and outputs the retrieved first identifier.

Another notable patent is a data search method and system that allows for retrieving data, including suitable replies to queries through a concept search. This method involves searching for a text group similar to an inquiry text from data storing multiple text groups. It classifies first information as second information that is a search object based on its appearance frequency and extracts third information included in the inquiry text. The system then searches for this third information from the second information and outputs the identifiers of a predetermined number of text groups with a higher number of hits.

Career Highlights

Iijima is currently employed at Hitachi, Ltd., where he continues to innovate and develop advanced technologies in data retrieval. His work has been instrumental in enhancing the efficiency and effectiveness of information retrieval systems.

Collaborations

Iijima has collaborated with notable colleagues, including Natsuko Sugaya and Atsushi Hatakeyama. Their combined expertise has contributed to the success of various projects and innovations in the field.

Conclusion

Michio Iijima's contributions to document retrieval systems and data search methods highlight his role as a leading inventor in the technology sector. His innovative patents continue to shape the way information is accessed and utilized in today's digital landscape.