Graduate School of Information, Production and SystemsWaseda University

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Yoshimura Lab

Where you optimize the objective functions of your life
HAO Cong, 2nd degree, Doctoral program

An objective function refers to an equation expressed as “f = ax + by + cz” from the mathematical point of view; from general view, it refers to the “value” that is evaluated from various aspects of something. In our daily life there are vast situations when we want to enhance the “value” of something with multiple purposes. For example we may want to speed up Internet access while ensuring security, to slim down mobile phones while expanding battery life, and to reduce air conditioning power consumption while ensuring sufficient cooling. Facing these comprehensive, sometimes even contradictory objectives (say comfort, pros and cons), what shall we do? How shall we get a highest value for these objectives?

When you are facing these problems, welcome to the world of research. The world of research is populated with numerous numbers of objective functions, which are hundreds or thousands times more complicated than the examples above. Optimizing these objective functions – getting a highest value – is the Great Mission of our researchers. It is a Great Mission that contributes to the whole world and whole people we should be proud of. The Yoshimura Lab, one of the greatest labs of Waseda University’s Graduate School of Information, Production and Systems, is a laboratory dedicated to fulfilling this mission.

The Yoshimura Lab conducts researches and developments in optimization technologies of Electronic Design Automation (EDA) for integrated circuits. Integrated system design includes multiple design stages: system specification design, behavior synthesis, logic synthesis and physical synthesis. Each design stage has its own difficulties but they all face a same problem: the high complexity of automated design due to the rapid growth of the integration of circuits and systems. For this reason, the Yoshimura Lab pays great efforts on developing theories and techniques to pursue optimized algorithms capable of achieving high-performance and low-cost designs in short time periods. Guided by Prof. Yoshimura’s conviction that “there are no limits in the world of optimization,” lab students examine the latest, fastest, and cheapest optimization methods, and constantly seek to transcend limitations. Accordingly, they present research papers at academic conferences, symposia and distinguished international conferences, and accumulate achievements in this way.

While learning to optimize the objective functions in academic area, Yoshimura Lab students also naturally acquire the methods to optimize the objective functions (i.e., value) of their lives. Concentrating on researches, job hunting, participating in sports, languages studying… The objective function of a student’s live could be so rich and colorful. Therefore, how shall we optimize the objective functions of our lives, how shall we pursue highest value of our life, how shall we enlarge our life to the maximum, is always a complex question with no absolute answer. It is also a question that needs to be discussed indefinitely, that needs us to dedicate our whole life to explore answers.

We sincerely invite you to pursue the optimization technologies in both research area and life together with our Prof. Yoshimura, who is the greatest, and one of the world’s leading experts on optimization methods.

Yoshimura lab 2016_1 Yoshimura lab 2016_2

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