austin

就业的难题让很多大学生都特别为难，只有通过考研这种方式来提升自己的学历，才可以拥有更多的竞争优势。

研究者July在计算机和机器学习领域的水平怎么样？

从语言设计的角度来看, Pascal 是一门优秀的语言吗?

和 C++ 相比，用 Fortran 编程是怎样的体验？

如何评价 Meta 的代码搜索系统 Glean?

操作 AST 树都有哪些标准算法，各自的优缺点是什么？

SLR与LALR之间的区别？

如何在程序中将中缀表达式转换为后缀表达式？

如何理解编程语言中「操作符」（operator）的概念？

语言设计中运算符优先级如何确定？

Parser Combinator 在语法解析的当中处于怎样的位置?

编译原理（龙书）的句法分析部分内容是不是有很大问题？

shift reduce，预测分析，递归下降分析（这是解析方法）和LL(K) LR(K) SLR以LALR的关系？

为什么编程语言都是上下文无关文法，不能采用上下文有关文法吗？

程序分析中的 {path,context,flow}-sensitive 问题？

电商平台应该分析哪些数据？具体怎么去分析？

为什么所有的教科书中都不赞成手写自底向上的语法分析器？

大数据公司 Splunk 和 Cloudera 的核心竞争力在哪里？

数据库 与 数据仓库的本质区别是什么？

编译器或解释器前端对于作用域的处理方法？

学习分析的几个特征：1.对象：学习者及学习者所处的情景（包括实体环境、学习进度、学习与教师关系、学校政策、班级氛围等因素）2.目的：更好地了解和优化学习者的学习和学习情景，使用的步骤包括测量、搜集、分析及汇报。3.与其他教育分析技术的区别：从学习者和学习活动中搜集各种形式的大数据后，采用数据科学或数据密集型理论进行分析。

is the growing realisation of the benefits of personalised instruction.

learning analytics does differ from more traditional education analyses in a number of ways.

As the field evolved, more sophisticated methods for statistical modelling of network dynamics and formation were used to further examine the nature of social mechanisms that drive the formation of social networks among students and the factors that influence the formation of student social networks across various formal and informal learning settings.

In short, learning analytics increases the quality and quantity of feedback loops in the education system for teachers, learners and administrators.

至关重要的能力是主动性参与、社会性参与和生产性参 与

根 茎 式 学 习 （Rhizomatic Learning）理 论

智慧教育主张借助信息技术的力量，创建具有一定智慧的（如感知、推理、辅助决策）学习时空环境，旨在促进学习者的智慧全面、协调和可持续发展，通过对学习和生活环境的适应、塑造和选择，以最终实现对人类的共善（对个人、他人、社会的助益）。智慧教育充分体现了“以学习者为中心”的思想，强调学习是一个充满张力和平衡的过程，揭示了“教育要为学习者的智慧发展服务”的深刻内涵。

Andujar (2016) examined the writing development of Spanish learners of English as a Second Language by using WhatsApp in a quasi-experimental study. Each student in the treatment group formulated a question each day on any topic they liked; each student had to provide at least one answer per question. Students in the control group received no such intervention. Results suggested a positive significant effect in favour of MIM use in enhancing students’ grammatical, lexical and mechanical accuracy.

Butgereit (2007) studied high school students using Mxit, a proprietary MIM software developed in South Africa, in an after-school tutor program. Mxit helped students get help with their mathematics homework from volunteer tutors and was found to be beneficial as an addition to in-school instruction

Introduction

Examining the utility and usability of mobile instant messaging in a graduate-level course: A usefulness theoretical perspective

数据表和数据列是否存在, 别名是否有歧义等。如果通过则生成新的解析树，再提交给优化器

大数据分析/挖掘尽管重要，产品的信息化也十分重要，企业需要一个从大数据到大产品的进程。

Our primary aim was to generate a cohort large enough to examine the heritability of prognostic therapy outcomes. However, the meta-analysis estimate of SNP heritability was low and non-significant (h2SNP = 0.09, SE = 0.17). A sample size of 2724 has 80% and 99% power to detect a SNP-heritability of 33% and 50%, respectively94. To achieve 80% power to detect a heritability of 20%, a sample of 4500 individuals will be required. A meta-analysis of 2 799 individuals was sufficient to detect a significant heritability estimate for therapy outcome to antidepressant drugs (h2SNP = 0.42, SE = 0.18) and this was the first evidence of a genetic component for treatments outcome of any kind

The meta-analysis sample (n = 2724) had 80% power to detect variants explaining 1.5% of the variance and 42% power to detect variants explaining 1% of the variance. Therefore, it is not especially surprising that we do not detect any variants at genome-wide significance. Typically, GWAS of psychological traits have required tens of thousands of participants to detect SNPs at genome-wide significance

individuals believe the diagnosis is somehow mistaken, and cling to a false, preferable reality.

Bert Hubert, the founder of PowerDNS and author of RFC 5452, shares his views on forces influencing DNS protocol development.