Use of Word Clustering to Improve Emotion Recognition from Short Text

Yuan, Shuai,Huang, Huan,Wu, Linjing Korean Institute of Information Scientists and Eng 2016 Journal of Computing Science and Engineering Vol.10 No.4

Emotion recognition is an important component of affective computing, and is significant in the implementation of natural and friendly human-computer interaction. An effective approach to recognizing emotion from text is based on a machine learning technique, which deals with emotion recognition as a classification problem. However, in emotion recognition, the texts involved are usually very short, leaving a very large, sparse feature space, which decreases the performance of emotion classification. This paper proposes to resolve the problem of feature sparseness, and largely improve the emotion recognition performance from short texts by doing the following: representing short texts with word cluster features, offering a novel word clustering algorithm, and using a new feature weighting scheme. Emotion classification experiments were performed with different features and weighting schemes on a publicly available dataset. The experimental results suggest that the word cluster features and the proposed weighting scheme can partly resolve problems with feature sparseness and emotion recognition performance.

Use of Word Clustering to Improve Emotion Recognition from Short Text

Shuai Yuan,Huan Huang,Linjing Wu 한국정보과학회 2016 Journal of Computing Science and Engineering Vol.10 No.4

Emotion recognition is an important component of affective computing, and is significant in the implementation of natural and friendly human-computer interaction. An effective approach to recognizing emotion from text is based on a machine learning technique, which deals with emotion recognition as a classification problem. However, in emotion recognition, the texts involved are usually very short, leaving a very large, sparse feature space, which decreases the performance of emotion classification. This paper proposes to resolve the problem of feature sparseness, and largely improve the emotion recognition performance from short texts by doing the following: representing short texts with word cluster features, offering a novel word clustering algorithm, and using a new feature weighting scheme. Emotion classification experiments were performed with different features and weighting schemes on a publicly available dataset. The experimental results suggest that the word cluster features and the proposed weighting scheme can partly resolve problems with feature sparseness and emotion recognition performance.

Differential responses of walnut cultivars to cold storage and their correlation with postharvest physiological parameters

Xue Yuan,Shuai Huang,Huiling Ma,Ning Huang,Niu Ye 한국원예학회 2019 Horticulture, Environment, and Biotechnology Vol.60 No.3

In this study, we screened eight walnut ( Juglans regia L.) cultivars (‘Xifu2’, ‘Shaanhe’, ‘Weina’, ‘Xiangling’, ‘Xiluo3’,‘Xifu1’, ‘Liaoning4’, and ‘Qingxiang’) in order to establish reliable selection criteria for storage-tolerance. Fresh walnutfruit were stored at 0 ± 0.5 °C and 70–80% relative humidity. Browning index, postharvest physio-biochemical characteristics,acid value, and sensory quality were measured. The results showed that ‘Xifu2’, ‘Shaanhe’, and ‘Weina’ developedbrowning early and quickly and storage was terminated for these cultivars at 60 days. ‘Xiluo3’, ‘Xifu1’, ‘Liaoning4’, and‘Qingxiang’ had a slow browning rate and storage was terminated at 72 days. ‘Xiangling’ developed browning at a mediumrate and storage was terminated at 72 days. Correlation analysis suggested that the terminal browning index of each cultivarpositively correlated with lipoxygenase activity at 18 days of storage, polyphenol oxidase activity at 18–30 days, malondialdehydecontent at 18 days, and the respiration rate at 42 days, while it negatively correlated with the total phenolic contentat 18 days and phenylalanine ammonia lyase activity at 12 days. The storage tolerance of each cultivar was evaluatedaccording to the terminal browning index, acid value, and sensory quality. Comprehensive evaluation and cluster analysiswere performed to rank the cold storage tolerance of the eight cultivars as follows: ‘Qingxiang’ and ‘Xifu1’ > ‘Liaoning4’and ‘Xiluo3’ > ‘Xifu2’ and ‘Xiangling’ > ‘Shaanhe’ and ‘Weina’. In conclusion, cultivars used for fresh in-husk walnut fruitwith lower levels of membrane peroxidation and phenol oxidation, and higher level of phenol synthesis around 18 days ofstorage would be suitable candidates for cold storage. ‘Qingxiang’ and ‘Xifu1’ were selected as storage-tolerant cultivars.

Pre-harvest ethylene control affects vase life of cut rose ‘Carola’ by regulating energy metabolism and antioxidant enzyme activity

Bi Gong,Shuai Huang,Niu Ye,Xue Yuan,Huiling Ma 한국원예학회 2018 Horticulture, Environment, and Biotechnology Vol.59 No.6

We studied the role of ethylene control in regulating energy metabolism, antioxidant enzyme activity, and vase life of cutrose Rosa hybrida ‘Carola’. Rose fl owers at stage II were sprayed with one of the following solutions: water (control), 10μL L −1 1-methylcyclopropene (1-MCP), or 0.5 g L −1 2-chloroethanephosphonic acid (ethephon). After harvest, ethyleneproduction rate, respiration intensity, energy charge (EC), activities of energy metabolism-related and antioxidant enzymes,and malondialdehyde (MDA) content were measured. Results showed that 1-MCP enhanced the activities of superoxidedismutase, H + -adenosine triphosphatase, Ca 2+ -adenosine triphosphatase, succinic dehydrogenase, and cytochrome c oxidase,increased adenosine triphosphate (ATP) content, maintained high EC levels, inhibited respiration intensity, reduced peroxidase(POD) and polyphenol oxidase (PPO) activity and MDA accumulation, and prolonged vase life. Ethephon promotedethylene production and respiration intensity, increased POD and PPO activity, reduced ATP content and EC levels, andaccelerated senescence. Our results support a novel role for ethylene control in regulating senescence of ‘Carola’.

Effect of 60Co g-ray irradiation on electrical properties of Ti/Au/ GaAs1xNx Schottky diodes

Gebru Zerihun,Gaoshang Gong,Shuai Huang,Songliu Yuan,N. Al Saqri,J.F. Felix,M. Henini 한국물리학회 2016 Current Applied Physics Vol.16 No.8

Current-voltage (I-V), capacitance-voltage-frequency (C-V-f) and conductance-voltage-frequency (G/u-V-f) measurements at room temperature are used to study 50 kGy 60Co g-ray electrical properties irradiation dependence of Ti/Au/GaAs1xNx Schottky diodes with 0.2%; 0.4%; 0.8% and 1.2% nitrogen dilution. This g-ray irradiation induces a permanent damage that has increased ideality factor and series resistance for all samples. It was accompanied by a decrease in Schottky barrier height with nitrogen content up to 0.4%N and remained constant thereafter. Radiation was also found to degrade the reverse leakage current. At high frequency (1 MHz), capacitance and conductance decreased after radiation due to a decrease in net doping concentration. Interface state density and series resistance were determined from C-V-f and G/u-V-f characteristics using Hill-Coleman methods. Interface states density exponentially decreased with increasing frequency confirming the behavior of interface traps response to ac signal. Series resistance increases after irradiation is attributed to carrier's removal effect andmobility degradation. It has two peaks in the accumulation and inversion region for some diodes (0.4%N, 0.8%N). g-ray irradiation produced traps levels and recombination centers that reduce relaxation time. An increase in %N content can impede irradiation damagewith even some compensationwhen the percent of diluted nitrogen is high (1.2%N).

Evaluation of Protective Immune Response Induced by a DNA Vaccine Encoding GRA8 against Acute Toxoplasmosis in a Murine Model

Jia-Qi Chu,Shuai Huang,Xuan-Yan Fan,Wei Ye,Rui Huang,Shi-Cai Ye,Cai-Yuan Yu,Wei-Yun Wu,Yu Zhou,Wei Zhou,Young-Ha Lee,Juan-Hua Quan 대한기생충학열대의학회 2018 The Korean Journal of Parasitology Vol.56 No.4

Dielectric relaxation and ferroelectric phase transition in Sr4BiRTi4Nb6O30 (R ¼Sm, Eu) ceramics

Gebru Zerihun,Gaoshang Gong,Shuai Huang,Songliu Yuan 한국물리학회 2016 Current Applied Physics Vol.16 No.8

Sr4BiRTi4Nb6O30 (R ¼ Sm, Eu) ceramics with tetragonal tungsten bronze structure were prepared by the conventional solid state reaction method. The crystalline structure, microstructure, dielectric and ferroelectric properties of the ceramics were investigated. Structural analysis using the powder x-ray diffraction patterns revealed the formation of tetragonal tungsten bronze structure in space group P4bm. Columnar grains with a homogeneous distribution were formed in Sr4BiEuTi4Nb6O30 ceramics, while in Sr4BiSmTi4Nb6O30 ceramics the microstructure became inhomogeneous and some abnormal grains were also formed. The dielectric properties of the ceramics exhibited relaxor type phase transition which can be attributed to the random distribution of Bi and Sm/Eu ions at A1-sites and Ti and Nb ions at the B-sites of the TTB structure. The peak temperature shifted towards the higher temperatures and the magnitude of the dielectric constant decreased with increasing frequency. Moreover, the temperature of the dielectric maximum Tm increased as the radius of the R ion getting decreased. From the P-E hysteresis loops, remnant polarization of 0.83 mC/cm2 and 0.6 mC/cm2 were obtained for Sr4BiEuTi4Nb6O30 and Sr4BiSmTi4Nb6O30, respectively.

Establishing a Nomogram for Stage IA-IIB Cervical Cancer Patients after Complete Resection

Zhou, Hang,Li, Xiong,Zhang, Yuan,Jia, Yao,Hu, Ting,Yang, Ru,Huang, Ke-Cheng,Chen, Zhi-Lan,Wang, Shao-Shuai,Tang, Fang-Xu,Zhou, Jin,Chen, Yi-Le,Wu, Li,Han, Xiao-Bing,Lin, Zhong-Qiu,Lu, Xiao-Mei,Xing, H Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9

Background: This study aimed to establish a nomogram by combining clinicopathologic factors with overall survival of stage IA-IIB cervical cancer patients after complete resection with pelvic lymphadenectomy. Materials and Methods: This nomogram was based on a retrospective study on 1,563 stage IA-IIB cervical cancer patients who underwent complete resection and lymphadenectomy from 2002 to 2008. The nomogram was constructed based on multivariate analysis using Cox proportional hazard regression. The accuracy and discriminative ability of the nomogram were measured by concordance index (C-index) and calibration curve. Results: Multivariate analysis identified lymph node metastasis (LNM), lymph-vascular space invasion (LVSI), stromal invasion, parametrial invasion, tumor diameter and histology as independent prognostic factors associated with cervical cancer survival. These factors were selected for construction of the nomogram. The C-index of the nomogram was 0.71 (95% CI, 0.65 to 0.77), and calibration of the nomogram showed good agreement between the 5-year predicted survival and the actual observation. Conclusions: We developed a nomogram predicting 5-year overall survival of surgically treated stage IA-IIB cervical cancer patients. More comprehensive information that is provided by this nomogram could provide further insight into personalized therapy selection.

The Prognostic Value of Treatment-Related Lymphopenia in Nasopharyngeal Carcinoma Patients

Li-Ting Liu,Qiu-Yan Chen,Lin-Quan Tang,Shan-Shan Guo,Ling Guo,Hao-Yuan Mo,Ming-Yuan Chen,Chong Zhao,Xiang Guo,Chao-Nan Qian,Mu-Sheng Zeng,Jin-Xin Bei,Jing Tan,Shuai Chen,Ming-Huang Hong,Jian-Yong Shao 대한암학회 2018 Cancer Research and Treatment Vol.50 No.1

Purpose This study was conducted to evaluate the prognostic value of treatment-related lymphopenia in patients with nasopharyngeal carcinoma (NPC). Materials and Methods A total of 413 consecutive stage II-IVb NPC patients treated with concurrent chemoradiotherapy (CCRT) were enrolled. The overall survival (OS), progression-free survival (PFS), and distant metastasis-free survival (DMFS) were calculated with the Kaplan-Meier method, and differences were compared using the log-rank test. Results A minimum (mini)–absolute lymphocyte counts (ALC) of < 390 cells/μL or ALC after 3 months of CCRT (post3m-ALC) < 705 cells/μL was significantly associated with worse outcome than mini-ALC ! 390 cells/μL (OS, p=0.002; PFS, p=0.005; DMFS, p=0.004) or post3m-ALC ! 705 cells/μL (OS, p < 0.001; PFS, p < 0.001; DMFS, p=0.001). Patients with lymphopenia (mini-ALC < 390 cells/μL and post3m-ALC < 705 cells/μL) had a worse prognosis than those without lymphopenia (mini-ALC ! 390 cells/μL and post3m-ALC ! 705 cells/μL) (OS, p < 0.001; PFS, p < 0.001; DMFS, p < 0.001). Multivariate analysis revealed that post3m-ALC was an independent prognostic factor for OS (hazard ratio [HR], 1.76; 95% confidence interval [CI], 1.12 to 2.78; p=0.015), PFS (HR, 1.86; 95% CI, 1.23 to 2.82; p=0.003), and DMFS (HR, 1.87; 95% CI, 1.13 to 3.08; p=0.014). Multivariate analysis also revealed that patients with lymphopenia had a high risk of death (HR, 3.79; 95% CI, 1.75 to 8.19; p=0.001), disease progression (HR, 2.93; 95% CI, 1.59 to 5.41; p=0.001), and distant metastasis (HR, 3.89; 95% CI, 1.67 to 9.10; p=0.002). Multivariate analysis performed with time dependent Cox regression demonstrated ALC was an independent prognostic factor for OS (HR, 0.995; 95% CI, 0.991 to 0.999; p=0.025) and PFS (HR, 0.993; 95% CI, 0.988 to 0.998; p=0.006). Conclusion Treatment-related lymphopenia was a poor prognostic factor in NPC patients.

The Effect of Transformation on the Virulence of Streptococcus pneumoniae

Zhang Xue-Mei,Yin Yi-Bing,Zhu Dan,Chen Bao-De,Luo Jin-Yong,Deng Vi-Ping,Liu Ming-Fang,Chen Shu-Hui,Meng Jiang-Ping,Lan Kai,Huang Yuan-Shuai,Kang Ge-Fei The Microbiological Society of Korea 2005 The journal of microbiology Vol.43 No.4

Although pneumococcus is one of the most frequently encountered opportunistic pathogen in the world, the mechanisms responsible for its infectiveness have not yet been fully understood. In this paper, we have attempted to characterize the effects of pneumococcal transformation on the pathogenesis of the organism. We constructed three transformation-deficient pneumococcal strains, which were designated as Nos. 1d, 2d, and 22d. The construction of these altered strains was achieved via the insertion of the inactivated gene, comE, to strains 1, 2 and 22. We then conducted a comparison between the virulence of the transformation-deficient strains and that of the wild-type strains, via an evaluation of the ability of each strain to adhere to endothelial cells, and also assessed psaA mRNA expression, and the survival of hosts after bacterial challenge. Compared to what was observed with the wild-type strains, our results indicated that the ability of all of the transformation-deficient strains to adhere to the ECV304 cells had been significantly reduced (p < 0.05), the expression of psaA mRNA was reduced significantly (p < 0.05) in strains 2d and 22d, and the median survival time of mice infected with strains Id and 2d was increased significantly after intraperitoneal bacterial challenge (p < 0.05). The results of our study also clearly indicated that transformation exerts significant effects on the virulence characteristics of S. pneumoniae, although the degree to which this effect is noted appears to depend primarily on the genetic background of the bacteria.