We present ConvLab, an open-source multidomain end-to-end dialog system platform, that enables researchers to quickly set up experiments with reusable components and compare a large set of different approaches, ranging from conventional pipeline systems to endto-end neural models, in common environments. ConvLab offers a set of fully annotated datasets and associated pre-trained reference models. As a showcase, we extend the MultiWOZ dataset with user dialog act annotations to train all component models and demonstrate how ConvLab makes it easy and effortless to conduct complicated experiments in multi-domain end-to-end dialog settings.

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This paper aims at explaining the college English “learning burnout” phenomenon with descriptions and statistics from a survey conducted in Anhui University of Science and Technology in October, 2018. The survey was mainly geared to investigate on the causes of college English “learning burnout” syndrome among freshmen and sophomores. The analyses of the causes are made from both learners’ and teachers’ perspectives. With some solutions are presented in the end. It is hoped to help to solve and enlighten the improvement of College English learning and teaching in local science and technology universities in China.

Castanopsis sclerophylla (Lindl.) Schott is one of the National Class II protected plants, and an important species in subtropical evergreen forests in China. The object of this work was to thoroughly explore the complete chloroplast (cp) genome of C. sclerophylla using next-generation sequencing. The circular complete cp genome of C. sclerophylla is 160,519 bp in length, containing a large single-copy (LSC) region of 90,243 bp, and a small single-copy (SSC) region of 18,976 bp. It comprises 131 genes, including 8 rRNA genes, 37 tRNAs genes, and 85 protein-coding genes. The GC content of C. sclerophylla cp genome is 36.81%. The phylogenetic analysis suggests that C. sclerophylla is a sister species to C. fargesii in Fagaceae.

Styrax faberi Perk., a native plant belonging to Styracaceae mainly distributed in the region south of the Yantze River, China, is both a medicinal and landscape plant. Here we studied the complete chloroplast (cp) genome sequence of S . faberi by using next-generation sequencing. The whole complete cp genome of S . faberi totals 159,424 bp in length, containing a large single-copy (LSC) region of 85,845 bp, and a small single-copy (SSC) region of 18,027 bp 133 genes, including 8 rRNA genes, 37 tRNAs genes, and 88 protein-coding genes constituted the genome. The GC content of S. faberi is 36.92%. The phylogenetic analysis reveals that S . faberi is a sister species to Styrax odoratissimus and Styrax zhejiangensis in Styracaceae .