This inventor holds 2 USPTO granted patents. Top assignee: Yahoo! Inc.. Active years: 2010-2011.
Company Filing History:
Years Active: 2010-2011
Title: Innovations by Jaesik Choi
Introduction
Jaesik Choi is an accomplished inventor based in Savoy, IL (US). He has made significant contributions to the field of technology, particularly in the area of spam detection and image processing. With a total of 2 patents, his work has garnered attention for its innovative approaches to solving complex problems.
Latest Patents
Jaesik Choi's latest patents include a "Filter for blocking image-based spam" and a method for "Identifying IP addresses for spammers." The first patent focuses on detecting and blocking image spam within messages by utilizing a weighted min-hash for near duplicate detection. This method employs a machine learning algorithm to assess the importance of each bit in a signature vector derived from the image. The signature vector is created through a series of processes, including extracting text shapes using a Discrete Cosine Transform and applying morphological operations to enhance text shape while minimizing noise.
The second patent addresses spam detection by analyzing the statistical distribution of message sizes from specific IP addresses. By modeling mail volumes, the method clusters IP addresses and calculates the entropy of message sizes. This entropy is then compared to known good IP addresses to identify potential spammers. User feedback is also integrated to refine the classification of IP addresses based on their messaging behavior.
Career Highlights
Jaesik Choi is currently employed at Yahoo! Inc., where he continues to innovate and develop solutions that enhance user experience and security. His work has been instrumental in advancing the company's capabilities in spam detection and image processing technologies.
Collaborations
Throughout his career, Jaesik has collaborated with notable colleagues, including Vishwanth Tumkur Ramarao and Ke Wei. These partnerships have contributed to the development of his innovative patents and have fostered a collaborative environment for technological advancement.
Conclusion
Jaesik Choi's contributions to the field of technology through his patents demonstrate his commitment to innovation and problem-solving. His work in spam detection and image processing continues to impact the industry positively.