给定 XML:
<publications>
<publication>
<journal_article key="journals/is/DimitriouTS15" mdate="2014-09-23">
<author>Aggeliki Dimitriou</author>
<author>Dimitri Theodoratos</author>
<author>Timos Sellis</author>
<title>Top-k-size keyword search on tree structured data.</title>
<pages>178-193</pages>
<year>2015</year>
<volume>47</volume>
<journal>Inf. Syst.</journal>
<ee>http://dx.doi.org/10.1016/j.is.2014.07.002</ee>
<url>db/journals/is/is47.html#DimitriouTS15</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/jiis/GiannopoulosKWJS15" mdate="2015-01-15">
<author>Giorgos Giannopoulos</author>
<author>Marios Koniaris</author>
<author>Ingmar Weber</author>
<author>Alejandro Jaimes</author>
<author>Timos K. Sellis</author>
<title>Algorithms and criteria for diversification of news article comments.</title>
<pages>1-47</pages>
<year>2015</year>
<volume>44</volume>
<journal>J. Intell. Inf. Syst.</journal>
<number>1</number>
<ee>http://dx.doi.org/10.1007/s10844-014-0328-1</ee>
<url>db/journals/jiis/jiis44.html#GiannopoulosKWJS15</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/sigkdd/GoonetillekeSZS14" mdate="2014-10-12">
<author>Oshini Goonetilleke</author>
<author>Timos Sellis</author>
<author>Xiuzhen Zhang</author>
<author>Saket Sathe</author>
<title>Twitter analytics: a big data management perspective.</title>
<pages>11-20</pages>
<year>2014</year>
<volume>16</volume>
<journal>SIGKDD Explorations</journal>
<number>1</number>
<ee>http://doi.acm.org/10.1145/2674026.2674029</ee>
<url>db/journals/sigkdd/sigkdd16.html#GoonetillekeSZS14</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/geoinformatica/TsatsanifosSS13" mdate="2013-06-13">
<author>George Tsatsanifos</author>
<author>Dimitris Sacharidis</author>
<author>Timos Sellis</author>
<title>Index-based query processing on distributed multidimensional data.</title>
<pages>489-519</pages>
<year>2013</year>
<volume>17</volume>
<journal>GeoInformatica</journal>
<number>3</number>
<ee>http://dx.doi.org/10.1007/s10707-012-0163-x</ee>
<url>db/journals/geoinformatica/geoinformatica17.html#TsatsanifosSS13</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/is/WuTWS13" mdate="2013-05-20">
<author>Xiaoying Wu</author>
<author>Dimitri Theodoratos</author>
<author>Wendy Hui Wang</author>
<author>Timos Sellis</author>
<title>Optimizing XML queries: Bitmapped materialized views vs. indexes.</title>
<pages>863-884</pages>
<year>2013</year>
<volume>38</volume>
<journal>Inf. Syst.</journal>
<number>6</number>
<ee>http://dx.doi.org/10.1016/j.is.2013.02.003</ee>
<url>db/journals/is/is38.html#WuTWS13</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/tkde/BourosSDSS12" mdate="2012-07-02">
<author>Panagiotis Bouros</author>
<author>Dimitris Sacharidis</author>
<author>Theodore Dalamagas</author>
<author>Spiros Skiadopoulos</author>
<author>Timos K. Sellis</author>
<title>Evaluating Path Queries over Frequently Updated Route Collections.</title>
<pages>1276-1290</pages>
<year>2012</year>
<volume>24</volume>
<journal>IEEE Trans. Knowl. Data Eng.</journal>
<number>7</number>
<ee>http://doi.ieeecomputersociety.org/10.1109/TKDE.2011.30</ee>
<url>db/journals/tkde/tkde24.html#BourosSDSS12</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/vldb/VergoulisDSS12" mdate="2012-11-20">
<author>Thanasis Vergoulis</author>
<author>Theodore Dalamagas</author>
<author>Dimitris Sacharidis</author>
<author>Timos K. Sellis</author>
<title>Approximate regional sequence matching for genomic databases.</title>
<pages>779-795</pages>
<year>2012</year>
<volume>21</volume>
<journal>VLDB J.</journal>
<number>6</number>
<ee>http://dx.doi.org/10.1007/s00778-012-0270-1</ee>
<url>db/journals/vldb/vldb21.html#VergoulisDSS12</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/is/PatroumpasS11" mdate="2010-11-08">
<author>Kostas Patroumpas</author>
<author>Timos K. Sellis</author>
<title>Maintaining consistent results of continuous queries under diverse window specifications.</title>
<pages>42-61</pages>
<year>2011</year>
<volume>36</volume>
<journal>Inf. Syst.</journal>
<number>1</number>
<ee>http://dx.doi.org/10.1016/j.is.2010.02.001</ee>
<url>db/journals/is/is36.html#PatroumpasS11</url>
</journal_article>
</publication>
<publication>
<journal_article key="journals/pvldb/KantereBS11" mdate="2011-11-16">
<author>Verena Kantere</author>
<author>Dimos Bousounis</author>
<author>Timos K. Sellis</author>
<title>GrouPeer: A System for Clustering PDMSs.</title>
<pages>1371-1374</pages>
<year>2011</year>
<volume>4</volume>
<journal>PVLDB</journal>
<number>12</number>
<ee>http://www.vldb.org/pvldb/vol4/p1371-kantere.pdf</ee>
<url>db/journals/pvldb/pvldb4.html#KantereBS11</url>
</journal_article>
</publication>
<publication>
<conference_paper key="conf/dexa/BikakisSS14" mdate="2014-09-10">
<author>Nikos Bikakis</author>
<author>Dimitris Sacharidis</author>
<author>Timos Sellis</author>
<title>A Study on External Memory Scan-Based Skyline Algorithms.</title>
<pages>156-170</pages>
<year>2014</year>
<booktitle>DEXA (1)</booktitle>
<ee>http://dx.doi.org/10.1007/978-3-319-10073-9_13</ee>
<crossref>conf/dexa/2014-1</crossref>
<url>db/conf/dexa/dexa2014-1.html#BikakisSS14</url>
</conference_paper>
</publication>
<publication>
<journal_article key="journals/nar/AlexiouVGPDMGSH10" mdate="2011-04-12">
<author>Panagiotis Alexiou</author>
<author>Thanasis Vergoulis</author>
<author>Martin Gleditzsch</author>
<author>George Prekas</author>
<author>Theodore Dalamagas</author>
<author>Molly Megraw</author>
<author>Ivo Grosse</author>
<author>Timos K. Sellis</author>
<author>Artemis G. Hatzigeorgiou</author>
<title>miRGen 2.0: a database of microRNA genomic information and regulation.</title>
<pages>137-141</pages>
<year>2010</year>
<volume>38</volume>
<journal>Nucleic Acids Research</journal>
<number>Database-Issue</number>
<ee>http://dx.doi.org/10.1093/nar/gkp888</ee>
<url>db/journals/nar/nar38.html#AlexiouVGPDMGSH10</url>
</journal_article>
</publication>
<publication>
<conference_paper key="conf/icsoc/NeiatBSD14" mdate="2014-10-13">
<author>Azadeh Ghari Neiat</author>
<author>Athman Bouguettaya</author>
<author>Timos Sellis</author>
<author>Hai Dong</author>
<title>Failure-Proof Spatio-temporal Composition of Sensor Cloud Services.</title>
<pages>368-377</pages>
<year>2014</year>
<booktitle>ICSOC</booktitle>
<ee>http://dx.doi.org/10.1007/978-3-662-45391-9_26</ee>
<crossref>conf/icsoc/2014</crossref>
<url>db/conf/icsoc/icsoc2014.html#NeiatBSD14</url>
</conference_paper>
</publication>
<publication>
<conference_paper key="conf/jurix/PobletACSC14" mdate="2014-12-02">
<author>Marta Poblet</author>
<author>Amir Aryani</author>
<author>Kate Caldecott</author>
<author>Timos Sellis</author>
<author>Pompeu Casanovas</author>
<title>Open-Access Grant Data: Towards Meta-Research Innovation.</title>
<pages>125-130</pages>
<year>2014</year>
<booktitle>JURIX</booktitle>
<ee>http://dx.doi.org/10.3233/978-1-61499-468-8-125</ee>
<crossref>conf/jurix/2014</crossref>
<url>db/conf/jurix/jurix2014.html#PobletACSC14</url>
</conference_paper>
</publication>
<publication>
<conference_paper key="conf/swat4ls/GkirtzouVHSD14" mdate="2015-01-03">
<author>Katerina Gkirtzou</author>
<author>Thanasis Vergoulis</author>
<author>Artemis G. Hatzigeorgiou</author>
<author>Timos Sellis</author>
<author>Theodore Dalamagas</author>
<title>Publishing Diachronic Life Science Linked Data.</title>
<year>2014</year>
<booktitle>SWAT4LS</booktitle>
<ee>http://ceur-ws.org/Vol-1320/paper_3.pdf</ee>
<crossref>conf/swat4ls/2014</crossref>
<url>db/conf/swat4ls/swat4ls2014.html#GkirtzouVHSD14</url>
</conference_paper>
</publication>
<publication>
<conference_paper key="conf/swat4ls/GkirtzouVHSD14" mdate="2015-01-03">
<author>Katerina Gkirtzou</author>
<author>Thanasis Vergoulis</author>
<author>Artemis G. Hatzigeorgiou</author>
<author>Timos Sellis</author>
<author>Theodore Dalamagas</author>
<title>Publishing Diachronic Life Science Linked Data.</title>
<year>2014</year>
<booktitle>SWAT4LS</booktitle>
<ee>http://ceur-ws.org/Vol-1320/paper_3.pdf</ee>
<crossref>conf/swat4ls/2014</crossref>
<url>db/conf/swat4ls/swat4ls2014.html#GkirtzouVHSD14</url>
</conference_paper>
</publication>
<publication>
<conference_paper key="conf/ercimdl/BikakisGLSDS13" mdate="2013-09-02">
<author>Nikos Bikakis</author>
<author>Giorgos Giannopoulos</author>
<author>John Liagouris</author>
<author>Dimitrios Skoutas</author>
<author>Theodore Dalamagas</author>
<author>Timos Sellis</author>
<title>RDivF: Diversifying Keyword Search on RDF Graphs.</title>
<pages>413-416</pages>
<year>2013</year>
<booktitle>TPDL</booktitle>
<ee>http://dx.doi.org/10.1007/978-3-642-40501-3_49</ee>
<crossref>conf/ercimdl/2013</crossref>
<url>db/conf/ercimdl/tpdl2013.html#BikakisGLSDS13</url>
</conference_paper>
</publication>
<publication>
<conference_paper key="conf/sebd/Sellis12" mdate="2012-10-18">
<author>Timos K. Sellis</author>
<title>Personalization in Web Search and Data Management.</title>
<pages>3</pages>
<year>2012</year>
<booktitle>SEBD</booktitle>
<ee>http://sebd2012.dei.unipd.it/documents/188475/e9e8d7fd-7cb5-4f6b-b199-57693decedfd</ee>
<crossref>conf/sebd/2012</crossref>
<url>db/conf/sebd/sebd2012.html#Sellis12</url>
</conference_paper>
</publication>
<publication>
<conference_paper key="conf/ssdbm/PatroumpasTS12" mdate="2012-09-18">
<author>Kostas Patroumpas</author>
<author>Kyriakos Toumbas</author>
<author>Timos K. Sellis</author>
<title>Multiplexing Trajectories of Moving Objects.</title>
<pages>595-600</pages>
<year>2012</year>
<booktitle>SSDBM</booktitle>
<ee>http://dx.doi.org/10.1007/978-3-642-31235-9_42</ee>
<crossref>conf/ssdbm/2012</crossref>
<url>db/conf/ssdbm/ssdbm2012.html#PatroumpasTS12</url>
</conference_paper>
</publication>
<publication>
<encyclopedia_entry key="books/idea/encyclopediaDB2005/SimitsisVS05" mdate="2011-11-25">
<author>Alkis Simitsis</author>
<author>Panos Vassiliadis</author>
<author>Timos K. Sellis</author>
<title>Extraction-Transformation-Loading Processes.</title>
<pages>240-245</pages>
<year>2005</year>
<crossref>books/idea/EncyDB05</crossref>
<booktitle>Encyclopedia of Database Technologies and Applications</booktitle>
<url>db/books/collections/encyclopediaDB2005.html#SimitsisVS05</url>
</encyclopedia_entry>
</publication>
<publication>
<informal_journal_article key="journals/ercim/SkoutasSS08" mdate="2013-11-22">
<author>Dimitrios Skoutas</author>
<author>Alkis Simitsis</author>
<author>Timos K. Sellis</author>
<title>Discovery and Selection of Services on the Semantic Web.</title>
<year>2008</year>
<volume>2008</volume>
<journal>ERCIM News</journal>
<number>72</number>
<ee>http://ercim-news.ercim.eu/discovery-and-selection-of-services-on-the-semantic-web</ee>
<url>db/journals/ercim/ercim2008.html#SkoutasSS08</url>
</informal_journal_article>
</publication>
<publication>
<informal_journal_article key="journals/corr/cs-DB-0310006" mdate="2011-12-05">
<author>Serge Abiteboul</author>
<author>Rakesh Agrawal</author>
<author>Philip A. Bernstein</author>
<author>Michael J. Carey</author>
<author>Stefano Ceri</author>
<author>W. Bruce Croft</author>
<author>David J. DeWitt</author>
<author>Michael J. Franklin</author>
<author>Hector Garcia-Molina</author>
<author>Dieter Gawlick</author>
<author>Jim Gray</author>
<author>Laura M. Haas</author>
<author>Alon Y. Halevy</author>
<author>Joseph M. Hellerstein</author>
<author>Yannis E. Ioannidis</author>
<author>Martin L. Kersten</author>
<author>Michael J. Pazzani</author>
<author>Michael Lesk</author>
<author>David Maier</author>
<author>Jeffrey F. Naughton</author>
<author>Hans-Jörg Schek</author>
<author>Timos K. Sellis</author>
<author>Avi Silberschatz</author>
<author>Michael Stonebraker</author>
<author>Richard T. Snodgrass</author>
<author>Jeffrey D. Ullman</author>
<author>Gerhard Weikum</author>
<author>Jennifer Widom</author>
<author>Stanley B. Zdonik</author>
<title>The Lowell Database Research Self Assessment</title>
<year>2003</year>
<volume>cs.DB/0310006</volume>
<journal>CoRR</journal>
<ee>http://arxiv.org/abs/cs.DB/0310006</ee>
<url>db/journals/corr/corr0310.html#cs-DB-0310006</url>
</informal_journal_article>
</publication>
<publication>
<book key="books/daglib/0017733" mdate="2011-02-09">
<author>Sanjoy Dasgupta</author>
<author>Christos H. Papadimitriou</author>
<author>Umesh V. Vazirani</author>
<title>Algorithms.</title>
<pages>I-X, 1-320</pages>
<publisher>McGraw-Hill</publisher>
<year>2008</year>
<isbn>978-0-07-352340-8</isbn>
</book>
</publication>
<publication>
<book key="books/daglib/0018514" mdate="2011-03-21">
<author>Christos H. Papadimitriou</author>
<title>Computational complexity.</title>
<pages>1-49</pages>
<publisher>Academic Internet Publ.</publisher>
<year>2007</year>
<isbn>978-1-4288-1409-7</isbn>
</book>
</publication>
<publication>
<book key="books/daglib/0015083" mdate="2011-03-25">
<author>Christos H. Papadimitriou</author>
<title>Turing - a novel about computation.</title>
<pages>1-284</pages>
<publisher>MIT Press</publisher>
<year>2005</year>
<isbn>978-0-262-66191-1</isbn>
</book>
</publication>
</publications>
我试图让每个使用 XPath 写过“Theodore Dalamagas”的作者。到目前为止我所做的是:
//author[../author="Theodore Dalamagas"]
我怎样才能更正它,使作者“Theodore Dalamagas”不与其他人一起返回?
最佳答案
以下是与西奥多·达拉马加斯在同一出版物上列出的作者,不包括西奥多·达拉马加斯本人:
//publication/*[author = 'Theodore Dalamagas']/author[. != 'Theodore Dalamagas']/text()
或者,更简短:
//author[../author='Theodore Dalamagas'][. != 'Theodore Dalamagas']/text()
结果:
Panagiotis Bouros
Dimitris Sacharidis
Spiros Skiadopoulos
Timos K. Sellis
Thanasis Vergoulis
Dimitris Sacharidis
Timos K. Sellis
Panagiotis Alexiou
Thanasis Vergoulis
Martin Gleditzsch
George Prekas
Molly Megraw
Ivo Grosse
Timos K. Sellis
Artemis G. Hatzigeorgiou
Katerina Gkirtzou
Thanasis Vergoulis
Artemis G. Hatzigeorgiou
Timos Sellis
Katerina Gkirtzou
Thanasis Vergoulis
Artemis G. Hatzigeorgiou
Timos Sellis
Nikos Bikakis
Giorgos Giannopoulos
John Liagouris
Dimitrios Skoutas
Timos Sellis
关于xml - 如何选择除特定元素之外的特定元素的所有兄弟元素,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34797555/
我正在学习如何使用Nokogiri,根据这段代码我遇到了一些问题:require'rubygems'require'mechanize'post_agent=WWW::Mechanize.newpost_page=post_agent.get('http://www.vbulletin.org/forum/showthread.php?t=230708')puts"\nabsolutepathwithtbodygivesnil"putspost_page.parser.xpath('/html/body/div/div/div/div/div/table/tbody/tr/td/div
总的来说,我对ruby还比较陌生,我正在为我正在创建的对象编写一些rspec测试用例。许多测试用例都非常基础,我只是想确保正确填充和返回值。我想知道是否有办法使用循环结构来执行此操作。不必为我要测试的每个方法都设置一个assertEquals。例如:describeitem,"TestingtheItem"doit"willhaveanullvaluetostart"doitem=Item.new#HereIcoulddotheitem.name.shouldbe_nil#thenIcoulddoitem.category.shouldbe_nilendend但我想要一些方法来使用
关闭。这个问题是opinion-based.它目前不接受答案。想要改进这个问题?更新问题,以便editingthispost可以用事实和引用来回答它.关闭4年前。Improvethisquestion我想在固定时间创建一系列低音和高音调的哔哔声。例如:在150毫秒时发出高音调的蜂鸣声在151毫秒时发出低音调的蜂鸣声200毫秒时发出低音调的蜂鸣声250毫秒的高音调蜂鸣声有没有办法在Ruby或Python中做到这一点?我真的不在乎输出编码是什么(.wav、.mp3、.ogg等等),但我确实想创建一个输出文件。
给定这段代码defcreate@upgrades=User.update_all(["role=?","upgraded"],:id=>params[:upgrade])redirect_toadmin_upgrades_path,:notice=>"Successfullyupgradeduser."end我如何在该操作中实际验证它们是否已保存或未重定向到适当的页面和消息? 最佳答案 在Rails3中,update_all不返回任何有意义的信息,除了已更新的记录数(这可能取决于您的DBMS是否返回该信息)。http://ar.ru
我在我的项目目录中完成了compasscreate.和compassinitrails。几个问题:我已将我的.sass文件放在public/stylesheets中。这是放置它们的正确位置吗?当我运行compasswatch时,它不会自动编译这些.sass文件。我必须手动指定文件:compasswatchpublic/stylesheets/myfile.sass等。如何让它自动运行?文件ie.css、print.css和screen.css已放在stylesheets/compiled。如何在编译后不让它们重新出现的情况下删除它们?我自己编译的.sass文件编译成compiled/t
我正在寻找执行以下操作的正确语法(在Perl、Shell或Ruby中):#variabletoaccessthedatalinesappendedasafileEND_OF_SCRIPT_MARKERrawdatastartshereanditcontinues. 最佳答案 Perl用__DATA__做这个:#!/usr/bin/perlusestrict;usewarnings;while(){print;}__DATA__Texttoprintgoeshere 关于ruby-如何将脚
我试图获取一个长度在1到10之间的字符串,并输出将字符串分解为大小为1、2或3的连续子字符串的所有可能方式。例如:输入:123456将整数分割成单个字符,然后继续查找组合。该代码将返回以下所有数组。[1,2,3,4,5,6][12,3,4,5,6][1,23,4,5,6][1,2,34,5,6][1,2,3,45,6][1,2,3,4,56][12,34,5,6][12,3,45,6][12,3,4,56][1,23,45,6][1,2,34,56][1,23,4,56][12,34,56][123,4,5,6][1,234,5,6][1,2,345,6][1,2,3,456][123
Rackup通过Rack的默认处理程序成功运行任何Rack应用程序。例如:classRackAppdefcall(environment)['200',{'Content-Type'=>'text/html'},["Helloworld"]]endendrunRackApp.new但是当最后一行更改为使用Rack的内置CGI处理程序时,rackup给出“NoMethodErrorat/undefinedmethod`call'fornil:NilClass”:Rack::Handler::CGI.runRackApp.newRack的其他内置处理程序也提出了同样的反对意见。例如Rack
在选择我想要运行操作的频率时,唯一的选项是“每天”、“每小时”和“每10分钟”。谢谢!我想为我的Rails3.1应用程序运行调度程序。 最佳答案 这不是一个优雅的解决方案,但您可以安排它每天运行,并在实际开始工作之前检查日期是否为当月的第一天。 关于ruby-如何每月在Heroku运行一次Scheduler插件?,我们在StackOverflow上找到一个类似的问题: https://stackoverflow.com/questions/8692687/
我有一个对象has_many应呈现为xml的子对象。这不是问题。我的问题是我创建了一个Hash包含此数据,就像解析器需要它一样。但是rails自动将整个文件包含在.........我需要摆脱type="array"和我该如何处理?我没有在文档中找到任何内容。 最佳答案 我遇到了同样的问题;这是我的XML:我在用这个:entries.to_xml将散列数据转换为XML,但这会将条目的数据包装到中所以我修改了:entries.to_xml(root:"Contacts")但这仍然将转换后的XML包装在“联系人”中,将我的XML代码修改为