Since the birth of software system, how to automate various tasks in software engineering has been one of the most important research problems faced by researchers. The popularity of Internet has given a new chance to automate software engineering: many software engineering data are now available in Internet, allowing data-oriented and knowledge-based intelligent software engineering. Around th...

The Institute of Microelectronics at Peking University committed itself to develop advanced devices and new materials for silicon micro/nanoelectronics, which considerably supports the development of the integrated circuit industry in China in the past ten years. The main contributions are included as follows.1) Ultra-low-power devices.Research group in the Institute of Microelectronics have de...

The fast and widely developed Internet has established an open, dynamic, and ever-changing environment for software applications. Compared to traditional software applications running on desktop environment, the Internet-based software applications have various specific features, such as the distribution and decentralization of control, the diversity of network connections, the openness and cha...

Innovative micro/nano-electro-mechanical devices and systems (M/NEMS) that can fulfill the requirement of various applications are in great demands, such as high-resolution sensors, micro energy harvesters, ultrasensitive biochemical sensor and clinical microsystems, and so on. Based on the foundation and achievements on micro/nanofabrication technologies, we explored a broad of M/NEMS devices ...

Language information processing aims to enable computers to understand and use human languages. The Comprehensive Language Knowledge Base (CLKB) is the infrastructure of language information processing techniques and industry, which provides formalized and standardized language knowledge as well as core softwares for new generation information technologies such as smart search, machine translat...

With a rapid increase of imaging devices such as surveillance cameras and mobile phones, massive images and videos have been captured. The data volume even accounts for more than half of the total Internet traffic and digital universe. Thus, how to efficiently compress and analyze these image and video data has become a major technological challenge in the field of information technology. If th...

Modern information and communication technologies (ICTs) have entered a mobile and intelligent era. Mixed-signal and radio frequency (MS/RF) integrated circuits (ICs) are critical for emerging ICTs such as wireless local area network (WLAN), passive optical network (PON), satellite communication, wireless access techniques, which are rapidly penetrating all aspects of our lives. Especially in t...

Being a core pillar of modern physics, quantum physics, roaring through its emerging, developing, and maturing stage during the very last century, has influenced profoundly, and is continuously reshaping the landscape of human life. Achievements of quantum physics includes, if not mentioning countless others, the invention of laser, semiconductor, and atomic clock. Quantum information technolog...

The low cost, ultra high speed, large capacity and long distance fiber transmission have been the targets of people's pursuit with the explosive growth of information demand. In addition, every milestone in optical communications relies on breakthroughs in basic optoelectronic devices. At present, one of the trends in optical communications is that, like the electrical integrated circuits and o...

Extensive efforts have been made to explore high-power vacuum electronic devices and super-resolution electromagnetic imaging technologies. Vacuum electronic devices use free-space electrons to excite electromagnetic-wave radiation between microwave to terahertz band, and play key roles in satellite, radar, wireless communication, and a series of other applications. High efficiency, high reliab...