基于pu-learning的同行评议文本情感分析

最近几年逐渐出现了对同行评议文本情感分析的研究，包括通过同行评议文本预测审稿人的推荐状态的任务。现有模型融入了论文本身或摘要信息，采用神经网络学习论文或摘要的高层表示，结合同行评议文本预测审稿人的推荐状态，这使得模型变得非常复杂的同时结果却没有实质性的提高。为此，提出了OSA机制来提高情感分析模型中对观点句的关注度。具体来说，采用pu-learning从同行评议文本的前N个句子中学习观点句的特征，使每一个句子都得到一个观点句权重，将其应用于情感分析模型的倒数第二层，由此得到最终的预测结果。在ICLR2017—2018数据集上使用不同的情感分析模型对OSA进行了评估，实验结果验证了OSA的高效性，并在两个数据集上取得了优异的性能。     

锚索梁支护技术在薄煤层综采沿空留巷中的研究与应用

滨湖煤矿12202运输巷留巷中采用锚索梁支护方式,采煤时利用直接顶冒落矸石作为沿空留巷的充填材料,用工字钢棚作为巷内基本支护与巷内加强支护。矿压观测表明巷道支护状况良好,维护了巷道围岩的稳定性。     

Outlier detection in audit logs for application systems

An outlier is defined as an observation that is significantly different from the other data in its set. An auditor will employ many techniques, processes and tools to identify these entries, and data mining is one such medium through which the auditor can analyze information. The enormous amount of information contained within transactional processing systems׳ logs means that auditors must employ automated systems for anomalous data detection. Several data mining algorithms have been tested, especially those that deal specifically with classification and outlier detection. A group of these previously described algorithms was selected for use in designing and developing a process to assist the auditor in anomalous data detection within audit logs. We have been successful in creating and ratifying an outlier detection process that works in the alphanumeric fields of the audit logs from an information system, thus constituting a useful tool for system auditors performing data analysis tasks.     

矿区资源承载力预测研究——以马钢南山矿区为例

要实现矿区的持续发展,需定量地知道矿区资源承载力未来将发生怎样的变化,以保证其资源消耗在承载力允许范围内。矿区是一个开放复杂巨系统,且常缺乏资源情况的历史数据。系统动力学不需要历史数据就能揭示开放复杂巨系统的运行规律;情景分析法通过定量地设定未来多种可能的发展情景,能解决使用系统动力学模型进行预测时,控制变量难以定量的问题。以马钢南山矿区为例,证实系统动力学与情景分析法的结合定量预测矿区资源承载力的可行性,并阐述如何利用该方法进行资源承载力的预测。     

神东矿区8m以上超大采高综采工作面技术探讨

在结合上湾矿新开四盘区12401首采面地质条件的基础上,对超大采高综采工作面参数和产量进行了分析,计算了该工作面的支护强度要在1.6 MPa以上,护帮范围需要达到4.5 m以上,最后对8 m以上超大采高综采工作面主要综采设备的关键技术难点与可行性进行了分析,论证了8 m以上超大采高综采实现的可能。     

微波脱硫中有机氧赋存形态的XPS分析

采用X射线光电子能谱(XPS)法分析了微波脱硫前后山西某矿高硫煤中有机氧(COO、C=O和C-O等)赋存形态的变化。研究结果表明:脱硫后煤样的O含量由17.97%上升至24.39%,C含量由70.49%下降到58.05%,同时n(O)/n(C)由0.26增至0.42。脱硫前后C1s图谱的拟合数据表明:煤样中C-H、C-C和C-O单键的含量分别从41.41%和28.74%下降到35.54%和7.10%,羰基和羧基含量分别由0.11%和0.21%增至10.38%和5.03%。     

环氧煤焦沥青管道防腐涂料应用

介绍了环氧煤沥青防腐涂料的基本组成、基本性能、基本技术指标,以及在管道防腐施工应用中的基本要求和注意事项。     

Mining temporal explicit and implicit semantic relations between entities using web search engines

In this paper, we study the problem of mining temporal semantic relations between entities. The goal of the studied problem is to mine and annotate a semantic relation with temporal, concise, and structured information, which can release the explicit, implicit, and diversity semantic relations between entities. The temporal semantic annotations can help users to learn and understand the unfamiliar or new emerged semantic relations between entities. The proposed temporal semantic annotation structure integrates the features from IEEE and Renlifang. We propose a general method to generate temporal semantic annotation of a semantic relation between entities by constructing its connection entities, lexical syntactic patterns, context sentences, context graph, and context communities. Empirical experiments on two different datasets including a LinkedIn dataset and movie star dataset show that the proposed method is effective and accurate. Different from the manually generated annotation repository such as Wikipedia and LinkedIn, the proposed method can automatically mine the semantic relation between entities and does not need any prior knowledge such as ontology or the hierarchical knowledge base. The proposed method can be used on some applications, which proves the effectiveness of the proposed temporal semantic relations on many web mining tasks.     

生物质与煤混烧特性的数值模拟研究

针对生物质与煤混烧影响锅炉经济燃烧特性现象,笔者采用处理软件Gambit建立锅炉流场空间网格物理模型,利用Fluent模拟混烧过程并对其数学模型进行求解,模拟混烧过程,并根据长春某电厂生物质混烧参数,计算分析了不同混烧比时的锅炉炉内流场与温度场变化,得出了不同混烧比例下炉内燃烧流场、温度的变化规律.计算结果表明,随着生物质与煤混烧比例的提高,炉内流场动力特性无明显变化,但炉内燃烧温度下降比较明显.     

煤化工技术的发展与新型煤化工技术

随着2次世界范围内石油危机的发生,人们将越来越多的目光投向煤化工技术。煤化工技术能够生产出代替石油产品的煤制油以及烃类,作为汽车等的燃料。在我国,传统煤化工技术已经成熟,但普遍存在高能耗高水耗等弊病。对于传统煤化工技术进行了综述,同时以新型煤化工技术作为对比,指出了我国目前新型煤化工技术的发展趋势。