一种基于情感特征的短文本分类方法

With the emergence of a large amount of short texts, using short text classification technology to mine a large amount of effective information in short text has become a hot topic of research. For the feature selection method in the current classification process, which only considers the word frequency, and the short text is short in length and sparse keywords, the paper proposes a short text classification method based on emotional features, combined with TF-IDF, the weight of the feature words is modified with the 〖JP2〗sentiment dictionary, which can effectively improve the weight of the feature words with distinguishing ability, and avoid the problem of low accuracy caused by traditional methods which do not consider emotion but only word frequency. Using the Chinese corpus of teacher Tan Songbo for short text classification, through comparative experiments, the effectiveness of the method is verified.     

岩质滑坡矩形抗滑桩成孔技术及施工效率影响因素

抗滑桩是滑坡治理的重要工程措施，成桩效率关系到抢险救灾的进程。研究抗滑桩成孔技术及施工效率影响因素对滑坡抢险救灾有重要意义。针对成都平原东部的雷打石应急滑坡治理工程，通过现场调查、帕累托图、因素分析及工程试验等方法，总结了抗滑桩施工流程、桩孔开挖和护壁施工技术研究现状，分析了抗滑桩成桩施工效率的主要影响因素。研究表明：该应急处置工程中桩孔开挖占成桩耗时的76.67%,是影响成桩效率最关键的工序；影响成孔的关键是桩孔开挖工艺、护壁施工技术和安全保障措施。通过比选不同桩孔开挖技术，最后应用了“旋挖+人工清边”开挖工艺、“滑体现浇钢筋混凝土+滑床喷射混凝土”组合式护壁结构、滑坡体环境安全控制系统和桩孔安全防护控制技术。通过应用提出的施工技术，取得日均进尺2.0 m以上的效率，顺利在要求工期内完成101根大截面、超深抗滑桩施工。