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| 1 | Exploiting Geo-Social Correlations to Improve Pairwise Ranking for Point-of-Interest Recommendation显示文摘Recently, as location-based social network(LBSN) rapidly grow, point-of-interest(POI) recommendation has become an important way to help people locate interesting places. Nowadays, there have been deep studies conducted on the geographical and social influence in the point-of-interest recommendation model based on the rating prediction. The fact is, however, relying solely on the rating fails to reflect the user's preferences very accurately, because the users are most concerned with the list of ranked point-of-interests(POIs) on the actual output of recommender systems. In this paper, we propose a co-pairwise ranking model called Geo-Social Bayesian Personalized Ranking model(GSBPR), which is based on the pairwise ranking with the exploiting geo-social correlations by incorporating the method of ranking learning into the process of POI recommendation. In this model, we develop a novel BPR pairwise ranking assumption by injecting users' geo-social preference. Based on this assumption, the POI recommendation model is reformulated by a three-level joint pairwise ranking model. And the experimental results based on real datasets show that the proposed method in this paper enjoys better recommendation performance compared to other state-of-the-art POI recommendation models. | Rong Gao Jing Li Bo Du Xuefei Li Jun Chang Chengfang Song Donghua Liu | 2018 | China Communications2018，15，7： | 9 |
| 2 | Study of temperature and precipitation change in upstream mountain area of the Hexi inland river basin since 1960s显示文摘All rivers in the Hexi inland region of Gansu Province, China, originate from the northern slope of the Qilian Mountains. They are located in the southern portion of the region and respectively belong to the three large river systems from east to west, the Shiyang, Heihe and Shule river basins. These rivers are supplied by precipitation, snowmelt and ice-melt runoff from the Qilian Mountain area. Therefore, changes of precipitation and temperature in the upstream watersheds of these rivers have an important effect on changes of mountainous runoff and reasonable utilization of water resources in this region. For this reason, the Qilian Mountain area, upstream watersheds and runoff forming areas of these rivers are chosen as the study area. The change characteristics and variation trend of temperature and precipitation in this area under the backdrop of global warming are analyzed based on observational data of relational weather and hydrologic stations in the area. Results show that temperatures in the upriver mountain areas of these three large river basins have been increasing, although the increasing degree is differentially affected by global warming. The rising extent of annual and seasonal temperatures in the upstream mountain area of the Shule river basin located in the western Qilian Mountains, were all largest over the past 50 years. Precipitation in the upstream mountain areas of Hexi region' three river basins located respectively in the western, middle and eastern Qilian Mountains have been presenting an increasing trend to varying degrees as a whole for more than 50 years. This means that climate in the upstream mountain areas of Hexi region' three river basins are becoming increasingly warmer and moister over the past 50 years, which will be very good for the ecological environment and agricultural production in the region. | YongChao Lan HongLang Xiao XingLin Hu HongWei Ding SongBing Zou ChengFang La Jie Song | 2012 | Research in Cold and Arid Regions2012，4，6： | 4 |
| 3 | Melatonin alleviates alcoholic liver disease via EGFR-BRG1-TERT axis regulation显示文摘Chronic alcohol consumption causes liver steatosis,cell death,and inflammation.Melatonin(MLT)is reported to alleviate alcoholic liver disease(ALD)-induced injury.However,its direct regulating targets in hepatocytes are not fully understood.In the current study,a cell-based screening model and a chronic ethanol-fed mice ALD model were used to test the protective mechanisms of MLT.MLT ameliorated ethanol-induced hepatocyte injury in both cell and animal models(optimal doses of 10μmol/L and 5 mg/kg,respectively),including lowered liver steatosis,cell death,and inflammation.RNA-seq analysis and loss-of-function studies in AML-12 cells revealed that telomerase reverse transcriptase(TERT)was a key downstream effector of MLT.Biophysical assay found that epidermal growth factor receptor(EGFR)on the hepatocyte surface was a direct binding and regulating target of MLT.Liver specific knock-down of Tert or Egfr in the ALD mice model impaired MLT-mediated liver protection,partly through the regulation of nuclear brahma-related gene-1(BRG1).Long-term administration(90 days)of MLT in healthy mice did not cause evident adverse effect.In conclusion,MLT is an efficacious and safe agent for ALD alleviation.Its direct regulating target in hepatocytes is EGFR and downstream BRG1-TERT axis.MLT might be used as a complimentary agent for alcoholics. | Zhaodi Che Yali Song Chengfang Xu Wei Li Zhiyong Dong Cunchuan Wang Yixing Ren Kwok-Fai So George L.Tipoe Fei Wang Jia Xiao | 2023 | Acta Pharmaceutica Sinica B2023，13，1： | 2 |
| 4 | Words in Pairs Neural Networks for Text Classification显示文摘Existing methods utilized single words as text features.Some words contain multiple meanings,and it is difficult to distinguish its specific classification according to a single word,which probably affects the accuracy of the text classification.Propose a framework based on Words in pairs neural networks(WPNN)for text classification.Words in pairs include all single word combinations which have a high mutual association.Mine the crucial explicit and implicit Words in pairs as text features.These words in pairs as a text feature are easily classified.The words in pairs are utilized as the input of the neural network,which provides a better classification ability to the model,because they are more recognizable than the single word.Experimental results show that our model outperforms five benchmark algorithms. | WU Yujia LI Jing SONG Chengfang CHANG Jun | 2020 | Chinese Journal of Electronics2020，29，3： | 1 |
| 5 | Climate transformation to warm-humid and its effect on river runoff in the source region of the Yellow River显示文摘The change characteristics and trends of the regional climate in the source region of the Yellow River, and the response of runoff to climate change, are analyzed based on observational data of air temperature, precipitation, and runoff at 10 main hydrological and weather stations in the region. Our results show that a strong signal of climate shift from warm-dry to warm-humid in the western parts of northwestern China(Xinjiang) and the western Hexi Corridor of Gansu Province occurred in the late 1980 s, and a same signal of climate change occurred in the mid-2000s in the source region of the Yellow River located in the eastern part of northwestern China. This climate changeover has led to a rapid increase in rainfall and stream runoff in the latter region. In most of the years since 2004 the average annual precipitation in the source region of the Yellow River has been greater than the long-term average annual value, and after 2007 the runoff measured at all of the hydrologic sections on the main channel of the Yellow River in the source region has also consistently exceeded the long-term average annual because of rainfall increase. It is difficult to determine the prospects of future climate change until additional observations and research are conducted on the rate and temporal and spatial extents of climate change in the region. Nevertheless, we predict that the climate shift from warm-dry to warm-humid in the source region of the Yellow River is very likely to be in the decadal time scale, which means a warming and rainy climate in the source region of the Yellow River will continue in the coming decades. | YongChao Lan HuiJun Jin ChengFang La Jun Wen Jie Song JinPeng Liu | 2014 | Research in Cold and Arid Regions2014，6，3： | 1 |
| 6 | Photocatalytic degradation of organic pollutants and detection of chemical oxygen demand by fluorescence methods显示文摘 | Chengfang Li Gongwu Song | 2009 | Sensors and Actuators B2009，137，： | 1 |
| 7 | Face Alignment by Coarse-to-Fine Shape Estimation显示文摘This paper presents a way to face alignment by Coarse-to-fine shape estimation(CFSE). Head poses, facial expressions and other facial appearance attributes are estimated coarsely as well as the main landmarks will be detected. The entire shape will be further estimated. This paper constructs an independent Head pose classification(HPC) model based on convolutional neural network to estimate and classify head poses. With the classification result, the estimated facial appearance attributes and the detected landmarks, a more accurate shape will be constructed. That shape will be used as the initialized shape and optimized by cascaded regression to approximate the ground-truth shape. Experiments on two challenging database demonstrate that CFSE outperforms the state-of-the-art methods. | WAN Jun LI Jing CHANG Jun WU Yujia XIAO Yafu SONG Chengfang | 2018 | Chinese Journal of Electronics2018，27，6： | 0 |
| 8 | Sensitivity of mountain runoff to climate change for Urumqi and Kaidu rivers originating from the Tianshan Mountains显示文摘The mountain watersheds of Kaidu River and Urumqi River, which separately originate from the south and north-side of the Tianshan Mountains in Xinjiang, are selected as the study area. The characteristics and trends on variation of temperature, precipi- tation and runoff, and the correlativity between temperature, precipitation, and runoff were analyzed based on the past 40 years of observational data from the correlative hydrological and weather stations in the study areas. Various weather scene combinations are assumed and the response models of runoff to climate change are established in order to evaluate the sensitivity of runoff to climate change in the study areas based on the foregoing analysis. Results show that all variations of temperature, precipitation, and runoff overall present an oscillating and increasing trend since the 1960s and this increase are quite evident after 1990. There is a markedly positive correlation between mountain runoff, temperature, and precipitation while there are obvious regional dif- ferences of responding degree to precipitation and temperature between mountain runoff of Urumqi River and Kaidu River Basins. Also, mountain runoff of Urumqi River Basin is more sensitive to precipitation change than that of Kaidu River Basin, and moun- tain runoff of Kaidu River Basin is more sensitive to temperature change than that of Urumqi River Basin. | YongChao Lan ZhengYao Ma YongPing Shen ChengFang La Jie Song XingLin Hu HongWei Din | 2011 | Research in Cold and Arid Regions2011，3，3： | 0 |
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