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  • Bing Liu
  • Handbook of Natural Language Processing
  • 2010
Textual information in the world can be broadly categorized into two main types: facts and opinions. Facts are objective expressions about entities, events and their properties. Opinions are usually subjective expressions that describe people’s sentiments, appraisals or feelings toward entities, events and their properties. The concept of opinion is very(More)
We provide a position-patch based face hallucination method using convex optimization. Recently, a novel position-patch based face hallucination method has been proposed to save computational time and achieve high-quality hallucinated results. This method has employed least square estimation to obtain the optimal weights for face hallucination. However, the(More)
This letter presents the design and experiment of the half mode substrate integrated waveguide (HMSIW) bandpass filters. Three-pole and five-pole HMSIW filters are simulated by using CST software and fabricated with a single layer standard printed circuit board process. Different external-coupling approaches are adopted in the design of the two filters. The(More)
In this paper, a new guided wave structure of half mode substrate integrated waveguide (HMSIW) for microwave and millimeter wave application is proposed for the first time. The principle of the HMSIW is described, and its propagation characteristics are simulated and measured. The measured results at microwave and millimeter wave bands show that the(More)
In the microwave band, substrate integrated waveguide (SIW) couplers take the advantages of low profile, low insertion loss, low interference etc., but suffer from the big size. In this letter, a novel half mode substrate integrated waveguide (HMSIW) 3-dB coupler is proposed, which keeps the good performance of the SIW coupler with nearly a half reduction(More)
Constant composition codes are a special class of constant weight codes, and include permutation codes as a subclass. They have applications in communications engineering. In this correspondence, a generic construction of optimal constant composition codes using zero-difference balanced functions is introduced. It generalizes the earlier construction of(More)
Recent kernel-based PPI extraction systems achieve promising performance because of their capability to capture structural syntactic information, but at the expense of computational complexity. This paper incorporates dependency information as well as other lexical and syntactic knowledge in a feature-based framework. Our motivation is that, considering the(More)
BACKGROUND Epidermal growth factor receptor (EGFR) mutation is strongly associated with the therapeutic effect of tyrosine kinase inhibitors (TKIs) in patients with non-small-cell lung cancer (NSCLC). Nevertheless, tumor tissue that needed for mutation analysis is frequently unavailable. Body fluid was considered to be a feasible substitute for the(More)
In this paper, we consider the following second-order ordinary differential equation x00 1⁄4 f ðt; xðtÞ; x0ðtÞÞ þ eðtÞ; t 2 ð0; 1Þ; ðEÞ subject to one of the following boundary value conditions: xð0Þ 1⁄4 Xm 2 i1⁄41 aixðniÞ; xð1Þ 1⁄4 bxðgÞ; ðB1Þ xð0Þ 1⁄4 Xm 2 i1⁄41 aixðniÞ; x0ð1Þ 1⁄4 bx0ðgÞ; ðB2Þ x0ð0Þ 1⁄4 Xm 2 i1⁄41 aixðniÞ; xð1Þ 1⁄4 bxðgÞ; ðB3Þ x0ð0Þ 1⁄4(More)