Hits ?▲ |
Authors |
Title |
Venue |
Year |
Link |
Author keywords |
96 | Chamara Gunaratne, Kenneth J. Christensen, Bruce Nordman, Stephen Suen |
Reducing the Energy Consumption of Ethernet with Adaptive Link Rate (ALR). |
IEEE Trans. Computers |
2008 |
DBLP DOI BibTeX RDF |
Energy Efficient Ethernet, Power management, local-area networks, Ethernet, energy-aware systems |
75 | Sameh W. Asaad, Kevin W. Warren |
Speed Optimization of the ALR Circuit Using an FPGA with Embedded RAM: A Design Experience. |
FPL |
1998 |
DBLP DOI BibTeX RDF |
|
65 | Chamara Gunaratne, Kenneth J. Christensen |
Ethernet Adaptive Link Rate: System Design and Performance Evaluation. |
LCN |
2006 |
DBLP DOI BibTeX RDF |
|
54 | Kôiti Hasida, Kam-Fai Wong, Nicoletta Calzorari, Key-Sun Choi (eds.) |
Proceedings of the 12th Workshop on Asian Language Resources, ALR@COLING 2016, Osaka, Japan, December 12, 2016 |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Yasutomo Kimura, Keiichi Takamaru, Takuma Tanaka, Akio Kobayashi, Hiroki Sakaji, Yuzu Uchida, Hokuto Ototake, Shigeru Masuyama |
Creating Japanese Political Corpus from Local Assembly Minutes of 47 prefectures. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Herman Leung, Rafaël Poiret, Tak-Sum Wong, Xinying Chen, Kim Gerdes, John Lee 0001 |
Developing Universal Dependencies for Mandarin Chinese. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Mohamed Al-Badrashiny, Abdelati Hawwari, Mahmoud Ghoneim, Mona T. Diab |
SAMER: A Semi-Automatically Created Lexical Resource for Arabic Verbal Multiword Expressions Tokens Paradigm and their Morphosyntactic Features. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Ge Xu, Xiaoyan Yang, Chu-Ren Huang |
Selective Annotation of Sentence Parts: Identification of Relevant Sub-sentential Units. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Minh-Tien Nguyen, Lai Dac Viet, Phong-Khac Do, Duc-Vu Tran, Minh-Le Nguyen 0001 |
VSoLSCSum: Building a Vietnamese Sentence-Comment Dataset for Social Context Summarization. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Daiki Gotou, Hitoshi Nishikawa, Takenobu Tokunaga |
An extension of ISO-Space for annotating object direction. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Seiya Shudo, Rafal Rzepka, Kenji Araki |
Automatic Evaluation of Commonsense Knowledge for Refining Japanese ConceptNet. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Takashi Yamamura, Kazutaka Shimada, Shintaro Kawahara |
The Kyutech corpus and topic segmentation using a combined method. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Masayuki Asahara, Yuji Matsumoto 0001 |
BCCWJ-DepPara: A Syntactic Annotation Treebank on the 'Balanced Corpus of Contemporary Written Japanese'. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Gunarso, Hammam Riza |
An Overview of BPPT's Indonesian Language Resources. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Kimi Kaneko, Saku Sugawara, Koji Mineshima, Daisuke Bekki |
Annotation and Analysis of Discourse Relations, Temporal Relations and Multi-Layered Situational Relations in Japanese Texts. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Ryo Minamiguchi, Masatoshi Tsuchiya |
Developing Corpus of Lecture Utterances Aligned to Slide Components. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Tuan Anh Le, David Moeljadi, Yasuhide Miura, Tomoko Ohkuma |
Sentiment Analysis for Low Resource Languages: A Study on Informal Indonesian Tweets. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Chenhui Chu, Toshiaki Nakazawa, Daisuke Kawahara, Sadao Kurohashi |
SCTB: A Chinese Treebank in Scientific Domain. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Tomoya Iwakura, Tetsuro Takahashi, Akihiro Ohtani, Kunio Matsui |
Big Community Data before World Wide Web Era. |
ALR@COLING |
2016 |
DBLP BibTeX RDF |
|
54 | Ruvan Weerasinghe, Sarmad Hussain, Virach Sornlertlamvanich, Rachel Edita Oñate Roxas (eds.) |
Proceedings of the 10th Workshop on Asian Language Resources, ALR@COLING 2012, Mumbai, India, December 9, 2012 |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | YoungGyun Hahm, Kyungtae Lim, Jungyeul Park, Yongun Yoon, Key-Sun Choi |
Korean NLP2RDF Resources. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Shikhar Kumar Sarma, Himadri Bharali, Ambeswar Gogoi, Ratul Deka, Anup Kr. Barman |
A Structured Approach for Building Assamese Corpus: Insights, Applications and Challenges. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Faryal Jahangir, Waqas Anwar, Usama Ijaz Bajwa, Xuan Wang |
N-gram and Gazetteer List Based Named Entity Recognition for Urdu: A Scarce Resourced Language. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Sanjay Chatterji, Nabanita Datta, Arnab Dhar, Biswanath Barik, Sudeshna Sarkar, Anupam Basu |
Repairing Bengali Verb Chunks for Improved Bengali to Hindi Machine Translation. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Mojgan Seraji, Beáta Megyesi, Joakim Nivre |
Dependency Parsers for Persian. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Denny Cahyadi, Fabien Cromierès, Sadao Kurohashi |
Constrained Hidden Markov Model for Bilingual Keyword Pairs Alignment. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Sanjay Chatterji, Sudeshna Sarkar, Anupam Basu |
Translations of Ambiguous Hindi Pronouns to Possible Bengali Pronouns. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Brijesh Bhatt, Pushpak Bhattacharyya |
Domain Specific Ontology Extractor For Indian Languages. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Biswajit Brahma, Anup Kr. Barman, Shikhar Kumar Sarma, Bhatima Boro |
Corpus Building of Literary Lesser Rich Language-Bodo: Insights and Challenges. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Zahra Sarabi, Morteza Analoui |
A New DOP Model for Phrase-structure Parsing of Persian Sentences. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Huidan Liu, Minghua Nuo, Jian Wu 0011, Yeping He |
Building Large Scale Text Corpus for Tibetan Natural Language Processing by Extracting Text from Web Pages. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Arnab Dhar, Sanjay Chatterji, Sudeshna Sarkar, Anupam Basu |
A Hybrid Dependency Parser for Bangla. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Ritesh Kumar, Bornini Lahiri, Deepak Alok |
Developing a POS tagger for Magahi: A Comparative Study. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Odbayar Chimeddorj, Atsushi Fujii |
Enhancing Lemmatization for Mongolian and its Application to Statistical Machine Translation. |
ALR@COLING |
2012 |
DBLP BibTeX RDF |
|
54 | Rachel Edita Oñate Roxas, Sarmad Hussain, Key-Sun Choi (eds.) |
Proceedings of the 9th Workshop on Asian Language Resources, ALR@IJCNLP 2011, Chiang Mai, Thailand, November 12-13, 2011 |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Aya Ishino, Hidetsugu Nanba, Toshiyuki Takezawa |
Providing Ad Links to Travel Blog Entries Based on Link Types. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Annette Hautli, Miriam Butt |
Towards a Computational Semantic Analyzer for Urdu. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Bharat Ram Ambati, Rahul Agarwal, Mridul Gupta, Samar Husain, Dipti Misra Sharma |
Error Detection for Treebank Validation. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Nattapong Tongtep, Thanaruk Theeramunkong |
Multi-stage Annotation using Pattern-based and Statistical-based Techniques for Automatic Thai Annotated Corpus Construction. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Nathaniel Oco, Allan Borra |
A Grammar Checker for Tagalog using LanguageTool. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Farah Adeeba, Sarmad Hussain |
Experiences in Building Urdu WordNet. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Joel P. Ilao, Rowena Cristina L. Guevara, Virgilio Llenaresas, Eilene Antoinette Narvaez, Jovy Peregrino |
Bantay-Wika: towards a better understanding of the dynamics of Filipino culture and linguistic change. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Virach Sornlertlamvanich |
Participation in Language Resource Development and Sharing. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Mona T. Diab, Ankit Kamboj |
Feasibility of Leveraging Crowd Sourcing for the Creation of a Large Scale Annotated Resource for Hindi English Code Switched Data: A Pilot Annotation. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Stephen Beale, Tod Allman |
Linguist's Assistant: A Resource For Linguists. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Yi Zhang 0003, Rui Wang 0005, Yu Chen |
Engineering a Deep HPSG for Mandarin Chinese. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Tejinder Singh Saini, Gurpreet Singh Lehal |
Word Disambiguation in Shahmukhi to Gurmukhi Transliteration. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | Shirley N. Dita, Rachel Edita Roxas |
Philippine Languages Online Corpora: Status, issues, and prospects. |
ALR@IJCNLP |
2011 |
DBLP BibTeX RDF |
|
54 | |
Proceedings of the 6th Workshop on Asian Language Resources, ALR@IJCNLP 2008, Hyderabad, India, Jnuary 11-12, 2008 |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Ryo Nishimura, Yasuhiko Watanabe, Yoshihiro Okada |
Confirmed Language Resource for Answering How Type Questions Developed by Using Mails Posted to a Mailing List. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Tirthankar Dasgupta, Sambit Shukla 0001, Sandeep Kumar, Synny Diwakar, Anupam Basu |
A Multilingual Multimedia Indian Sign Language Dictionary Tool. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Shuichi Itahashi, Kôiti Hasida |
Japanese Effort Toward Sharing Text and Speech Corpora. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Sarmad Hussain |
Resources for Urdu Language Processing. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Rashmi Prasad, Samar Husain, Dipti Misra Sharma, Aravind K. Joshi |
Towards an Annotated Corpus of Discourse Relations in Hindi. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Kikuo Maekawa |
Balanced Corpus of Contemporary Written Japanese. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Purev Jaimai, Odbayar Chimeddorj |
Corpus building for Mongolian language. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Makiko Matsuda, Tomoe Takahashi, Hiroki Goto, Yoshikazu Hayase, Robin Lee Nagano, Yoshiki Mikami |
Technical Terminology in Asian Languages: Different Approaches to Adopting Engineering Terms. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Hoang Anh Viet, Thu Dinh-Thi-Phuong, Huynh Quyet Thang |
A Basic Framework to Build a Test Collection for the Vietnamese Text Catergorization. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Hla Hla Htay, Kavi Narayana Murthy |
Myanmar Word Segmentation using Syllable level Longest Matching. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Rizza Camus Caminero, Yoshiki Mikami |
The Link Structure of Language Communities and its Implication for Language-specific Crawling. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Yin-Sheng Tai, D. Victoria Rau, Meng-Chien Yang |
A Semantic Study on Yami Ontology in Traditional Songs. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Gaoying Cui, Qin Lu 0001, Wenjie Li 0002 |
Preliminary Chinese Term Classification for Ontology Construction. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Deniz Zeyrek, Bonnie L. Webber |
A Discourse Resource for Turkish: Annotating Discourse Connectives in the METU Corpus. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Asif Ekbal, Sivaji Bandyopadhyay |
Development of Bengali Named Entity Tagged Corpus and its Use in NER Systems. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Baskaran Sankaran, Kalika Bali, Tanmoy Bhattacharya 0003, Pushpak Bhattacharyya, Girish Nath Jha, S. Rajendran, K. Saravanan 0001, Sobha Lalitha Devi, Karumuri V. Subbarao |
Designing a Common POS-Tagset Framework for Indian Languages. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Hammam Riza |
Resources Report on Languages of Indonesia. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Sujan Kumar Saha, Sudeshna Sarkar, Pabitra Mitra |
Gazetteer Preparation for Named Entity Recognition in Indian Languages. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Virach Sornlertlamvanich, Thatsanee Charoenporn, Suphanut Thayaboon, Chumpol Mokarat, Hitoshi Isahara |
Enhanced Tools for Online Collaborative Language Resource Development. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | R. J. Rama Sree, Uma Maheswara Rao G., K. V. Madhu Murthy |
Assessment and Development of POS Tag Set for Telugu. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | Wunna Ko Ko, Thin Zar Phyo |
Selection of XML tag set for Myanmar National Corpus. |
ALR@IJCNLP |
2008 |
DBLP BibTeX RDF |
|
54 | |
Proceedings of the Fifth Workshop on Asian Language Resources and First Symposium on Asian Language Resources Network, ALR/ALRN@IJCNLP 2005, Jeju Island, Korea, October 14, 2005 |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Xin Li, Xuanjing Huang 0001, Lide Wu |
Question Classification using Multiple Classifiers. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Tingting He, Xiaoqi Xu |
The Standard of Chinese Corpus Metadata. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Zhifang Sui, Gaoying Cui, Wansong Ding, Qinlong Zhang |
Domain Knowledge Engineering Based on Encyclopedias and the Web Text. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Chunyu Kit, Xiaoyue Liu, KingKui Sin, Jonathan J. Webster |
Harvesting the Bitexts of the Laws of Hong Kong From the Web. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | |
Author Index. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Tomoya Noro, Chimato Koike, Taiichi Hashimoto, Takenobu Tokunaga, Hozumi Tanaka |
Evaluation of a Japanese CFG Derived from a Syntactically Annotated Corpus with Respect to Dependency Measures. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Shingo Kato, Shigeki Matsubara, Yukiko Yamaguchi, Nobuo Kawaguchi |
Construction of Structurally Annotated Spoken Dialogue Corpus. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Chu-Ren Huang, I-Li Su, Jia-Fei Hong, Xiang-Bing Li |
Cross-lingual Conversion of Lexical Semantic Relations: Building Parallel Wordnets. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Meng-Chien Yang, D. Victoria Rau |
An Integrated Framework for Archiving, Processing and Developing Learning Materials for an Endangered Aboriginal Language in Taiwan. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Yan Zhang, Hideki Kashioka |
Corpus-oriented Acquisition of Chinese Grammar. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | Jane S. Tsay |
Taiwan Child Language Corpus: Data Collection and Annotation. |
ALR/ALRN@IJCNLP |
2005 |
DBLP BibTeX RDF |
|
54 | |
The 3rd Workshop on Asian Language Resources and International Standardization, ALR@COLING 2002, Taipei, Taiwan, August 24 - Setember 1, 2002 |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Nicoletta Calzolari, Alessandro Lenci, Francesca Bertagna, Antonio Zampolli |
Broadening the Scope of the EAGLES/ISLE Lexical Standardization Initiative. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Do-Gil Lee, Sang-Zoo Lee, Hae-Chang Rim, Heui-Seok Lim |
Automatic Word Spacing Using Hidden Markov Model for Refining Korean Text Corpora. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Ru-Yng Chang, Chu-Ren Huang |
OLACMS: Comparisons and Applications in Chinese and Formosan Languages. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Akshar Bharati, Rajeev Sangal, Vineet Chaitanya, Amba P. Kulkarni, Dipti Misra Sharma, K. V. Ramakrishnamacharyulu |
AnnCorra: Building Tree-banks in Indian Languages. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Qin Lu 0001, Shiu-tong Chan, Yin Li, Ngai Ling Li |
Decomposition for ISO/IEC 10646 Ideographic Characters. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Dara Becker, Kashif Riaz |
A Study in Urdu Corpus Construction. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Le Sun 0001, Song Xue, Weimin Qu, Xiaofeng Wang, Yufang Sun |
Constructing of a Large-Scale Chinese-English Parallel Corpus. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Miriam Butt, Tracy Holloway King |
Urdu and the Parallel Grammar Project. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Jack Halpern |
Lexicon-based Orthographic Disambiguation in CJK Intelligent Information Retrieval. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Melanie Siegel, Emily M. Bender |
Efficient Deep Processing of Japanese. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
54 | Asanee Kawtrakul, Mukda Suktarachan, Patcharee Varasai, Hutchatai Chanlekha |
A State of the Art of Thai Language Resources and Thai Language Behavior Analysis and Modeling. |
ALR@COLING |
2002 |
DBLP BibTeX RDF |
|
44 | Baoke Zhang, Karthik Sabhanatarajan, Ann Gordon-Ross, Alan D. George |
Real-time performance analysis of Adaptive Link Rate. |
LCN |
2008 |
DBLP DOI BibTeX RDF |
|
44 | David de la Mata-Moya, Pilar Jarabo Amores, Raul Vicen-Bueno, Manuel Rosa-Zurera, Francisco López-Ferreras |
Neural Network Detectors for Composite Hypothesis Tests. |
IDEAL |
2006 |
DBLP DOI BibTeX RDF |
|
44 | Ray-I Chang, Chih-Chun Chu |
An Efficient Anonymous Scheme for Mutual Anonymous Communications. |
ICN (2) |
2005 |
DBLP DOI BibTeX RDF |
|
44 | Vladimír Oplustil, L. Gáspár, D. Svacina, Stefan Szabó |
COTS (Commercial Off The Shelf) Distributed System for Critical Application. |
ECBS |
2004 |
DBLP DOI BibTeX RDF |
|
44 | Stefan Szabó, Vladimír Oplustil |
Distributed CAN based control system for robotic and airborne applications. |
ICARCV |
2002 |
DBLP DOI BibTeX RDF |
|
37 | Yin-Fu Huang, Yeh-Hao Chin |
A New Methodology to Evaluate Locking Protocols. |
IEEE Trans. Knowl. Data Eng. |
1990 |
DBLP DOI BibTeX RDF |
average lock range, evaluation factor, locking-based concurrency control methods, nonstructural locking, ALR, popular locking protocols, 2PL protocol, tree protocol, simulation, protocols, distributed databases, concurrency control, correctness, trees (mathematics), queueing model |