-
Kleineberg, M.: Context analysis and context indexing : formal pragmatics in knowledge organization (2014)
0.24
0.23713571 = product of:
0.47427142 = sum of:
0.118567854 = product of:
0.35570356 = sum of:
0.35570356 = weight(_text_:3a in 1826) [ClassicSimilarity], result of:
0.35570356 = score(doc=1826,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.93669677 = fieldWeight in 1826, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.078125 = fieldNorm(doc=1826)
0.33333334 = coord(1/3)
0.35570356 = weight(_text_:2f in 1826) [ClassicSimilarity], result of:
0.35570356 = score(doc=1826,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.93669677 = fieldWeight in 1826, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.078125 = fieldNorm(doc=1826)
0.5 = coord(2/4)
- Source
- http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CDQQFjAE&url=http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F3131107&ei=HzFWVYvGMsiNsgGTyoFI&usg=AFQjCNE2FHUeR9oQTQlNC4TPedv4Mo3DaQ&sig2=Rlzpr7a3BLZZkqZCXXN_IA&bvm=bv.93564037,d.bGg&cad=rja
-
Hotho, A.; Bloehdorn, S.: Data Mining 2004 : Text classification by boosting weak learners based on terms and concepts (2004)
0.23
0.22707656 = product of:
0.30276874 = sum of:
0.071140714 = product of:
0.21342213 = sum of:
0.21342213 = weight(_text_:3a in 562) [ClassicSimilarity], result of:
0.21342213 = score(doc=562,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 562, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=562)
0.33333334 = coord(1/3)
0.21342213 = weight(_text_:2f in 562) [ClassicSimilarity], result of:
0.21342213 = score(doc=562,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 562, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=562)
0.018205874 = product of:
0.036411747 = sum of:
0.036411747 = weight(_text_:22 in 562) [ClassicSimilarity], result of:
0.036411747 = score(doc=562,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.23214069 = fieldWeight in 562, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=562)
0.5 = coord(1/2)
0.75 = coord(3/4)
- Content
- Vgl.: http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CEAQFjAA&url=http%3A%2F%2Fciteseerx.ist.psu.edu%2Fviewdoc%2Fdownload%3Fdoi%3D10.1.1.91.4940%26rep%3Drep1%26type%3Dpdf&ei=dOXrUMeIDYHDtQahsIGACg&usg=AFQjCNHFWVh6gNPvnOrOS9R3rkrXCNVD-A&sig2=5I2F5evRfMnsttSgFF9g7Q&bvm=bv.1357316858,d.Yms.
- Date
- 8. 1.2013 10:22:32
-
Popper, K.R.: Three worlds : the Tanner lecture on human values. Deliverd at the University of Michigan, April 7, 1978 (1978)
0.19
0.18970858 = product of:
0.37941715 = sum of:
0.09485429 = product of:
0.28456286 = sum of:
0.28456286 = weight(_text_:3a in 230) [ClassicSimilarity], result of:
0.28456286 = score(doc=230,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.7493574 = fieldWeight in 230, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=230)
0.33333334 = coord(1/3)
0.28456286 = weight(_text_:2f in 230) [ClassicSimilarity], result of:
0.28456286 = score(doc=230,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.7493574 = fieldWeight in 230, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=230)
0.5 = coord(2/4)
- Source
- https%3A%2F%2Ftannerlectures.utah.edu%2F_documents%2Fa-to-z%2Fp%2Fpopper80.pdf&usg=AOvVaw3f4QRTEH-OEBmoYr2J_c7H
-
Li, L.; Shang, Y.; Zhang, W.: Improvement of HITS-based algorithms on Web documents
0.19
0.1864826 = product of:
0.3729652 = sum of:
0.071140714 = product of:
0.21342213 = sum of:
0.21342213 = weight(_text_:3a in 2514) [ClassicSimilarity], result of:
0.21342213 = score(doc=2514,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 2514, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=2514)
0.33333334 = coord(1/3)
0.30182448 = weight(_text_:2f in 2514) [ClassicSimilarity], result of:
0.30182448 = score(doc=2514,freq=4.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.7948135 = fieldWeight in 2514, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=2514)
0.5 = coord(2/4)
- Content
- Vgl.: http%3A%2F%2Fdelab.csd.auth.gr%2F~dimitris%2Fcourses%2Fir_spring06%2Fpage_rank_computing%2Fp527-li.pdf. Vgl. auch: http://www2002.org/CDROM/refereed/643/.
-
Vetere, G.; Lenzerini, M.: Models for semantic interoperability in service-oriented architectures (2005)
0.17
0.165995 = product of:
0.33199 = sum of:
0.0829975 = product of:
0.2489925 = sum of:
0.2489925 = weight(_text_:3a in 306) [ClassicSimilarity], result of:
0.2489925 = score(doc=306,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.65568775 = fieldWeight in 306, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0546875 = fieldNorm(doc=306)
0.33333334 = coord(1/3)
0.2489925 = weight(_text_:2f in 306) [ClassicSimilarity], result of:
0.2489925 = score(doc=306,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.65568775 = fieldWeight in 306, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0546875 = fieldNorm(doc=306)
0.5 = coord(2/4)
- Content
- Vgl.: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5386707&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D5386707.
-
Birmingham, J.: Internet search engines (1996)
0.15
0.1509698 = product of:
0.3019396 = sum of:
0.26552784 = weight(_text_:engines in 5664) [ClassicSimilarity], result of:
0.26552784 = score(doc=5664,freq=6.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
1.1667583 = fieldWeight in 5664, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.09375 = fieldNorm(doc=5664)
0.036411747 = product of:
0.072823495 = sum of:
0.072823495 = weight(_text_:22 in 5664) [ClassicSimilarity], result of:
0.072823495 = score(doc=5664,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.46428138 = fieldWeight in 5664, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=5664)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- Basically a good listing in table format of features from the major search engines
- Content
- Darstellung zu verschiedenen search engines des Internet
- Date
- 10.11.1996 16:36:22
-
Mas, S.; Marleau, Y.: Proposition of a faceted classification model to support corporate information organization and digital records management (2009)
0.14
0.14228143 = product of:
0.28456286 = sum of:
0.071140714 = product of:
0.21342213 = sum of:
0.21342213 = weight(_text_:3a in 2918) [ClassicSimilarity], result of:
0.21342213 = score(doc=2918,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 2918, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=2918)
0.33333334 = coord(1/3)
0.21342213 = weight(_text_:2f in 2918) [ClassicSimilarity], result of:
0.21342213 = score(doc=2918,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 2918, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=2918)
0.5 = coord(2/4)
- Footnote
- Vgl.: http://ieeexplore.ieee.org/Xplore/login.jsp?reload=true&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F4755313%2F4755314%2F04755480.pdf%3Farnumber%3D4755480&authDecision=-203.
-
Zeng, Q.; Yu, M.; Yu, W.; Xiong, J.; Shi, Y.; Jiang, M.: Faceted hierarchy : a new graph type to organize scientific concepts and a construction method (2019)
0.14
0.14228143 = product of:
0.28456286 = sum of:
0.071140714 = product of:
0.21342213 = sum of:
0.21342213 = weight(_text_:3a in 400) [ClassicSimilarity], result of:
0.21342213 = score(doc=400,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 400, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=400)
0.33333334 = coord(1/3)
0.21342213 = weight(_text_:2f in 400) [ClassicSimilarity], result of:
0.21342213 = score(doc=400,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 400, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=400)
0.5 = coord(2/4)
- Content
- Vgl.: https%3A%2F%2Faclanthology.org%2FD19-5317.pdf&usg=AOvVaw0ZZFyq5wWTtNTvNkrvjlGA.
-
Noever, D.; Ciolino, M.: ¬The Turing deception (2022)
0.14
0.14228143 = product of:
0.28456286 = sum of:
0.071140714 = product of:
0.21342213 = sum of:
0.21342213 = weight(_text_:3a in 862) [ClassicSimilarity], result of:
0.21342213 = score(doc=862,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 862, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=862)
0.33333334 = coord(1/3)
0.21342213 = weight(_text_:2f in 862) [ClassicSimilarity], result of:
0.21342213 = score(doc=862,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 862, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=862)
0.5 = coord(2/4)
- Source
- https%3A%2F%2Farxiv.org%2Fabs%2F2212.06721&usg=AOvVaw3i_9pZm9y_dQWoHi6uv0EN
-
Croft, W.B.; Metzler, D.; Strohman, T.: Search engines : information retrieval in practice (2010)
0.14
0.14094809 = product of:
0.28189617 = sum of:
0.17139749 = weight(_text_:engines in 2605) [ClassicSimilarity], result of:
0.17139749 = score(doc=2605,freq=10.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.75313926 = fieldWeight in 2605, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.046875 = fieldNorm(doc=2605)
0.1104987 = product of:
0.2209974 = sum of:
0.2209974 = weight(_text_:programming in 2605) [ClassicSimilarity], result of:
0.2209974 = score(doc=2605,freq=6.0), product of:
0.29361802 = queryWeight, product of:
6.5552235 = idf(docFreq=170, maxDocs=44218)
0.04479146 = queryNorm
0.7526697 = fieldWeight in 2605, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
6.5552235 = idf(docFreq=170, maxDocs=44218)
0.046875 = fieldNorm(doc=2605)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- For introductory information retrieval courses at the undergraduate and graduate level in computer science, information science and computer engineering departments. Written by a leader in the field of information retrieval, Search Engines: Information Retrieval in Practice, is designed to give undergraduate students the understanding and tools they need to evaluate, compare and modify search engines. Coverage of the underlying IR and mathematical models reinforce key concepts. The book's numerous programming exercises make extensive use of Galago, a Java-based open source search engine. SUPPLEMENTS / Extensive lecture slides (in PDF and PPT format) / Solutions to selected end of chapter problems (Instructors only) / Test collections for exercises / Galago search engine
- LCSH
- Search engines / Programming
- Subject
- Search engines / Programming
-
Xiong, C.: Knowledge based text representations for information retrieval (2016)
0.12
0.12432174 = product of:
0.24864347 = sum of:
0.047427144 = product of:
0.14228143 = sum of:
0.14228143 = weight(_text_:3a in 5820) [ClassicSimilarity], result of:
0.14228143 = score(doc=5820,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.3746787 = fieldWeight in 5820, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.03125 = fieldNorm(doc=5820)
0.33333334 = coord(1/3)
0.20121633 = weight(_text_:2f in 5820) [ClassicSimilarity], result of:
0.20121633 = score(doc=5820,freq=4.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.5298757 = fieldWeight in 5820, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.03125 = fieldNorm(doc=5820)
0.5 = coord(2/4)
- Content
- Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Language and Information Technologies. Vgl.: https%3A%2F%2Fwww.cs.cmu.edu%2F~cx%2Fpapers%2Fknowledge_based_text_representation.pdf&usg=AOvVaw0SaTSvhWLTh__Uz_HtOtl3.
-
Farazi, M.: Faceted lightweight ontologies : a formalization and some experiments (2010)
0.12
0.118567854 = product of:
0.23713571 = sum of:
0.059283927 = product of:
0.17785178 = sum of:
0.17785178 = weight(_text_:3a in 4997) [ClassicSimilarity], result of:
0.17785178 = score(doc=4997,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.46834838 = fieldWeight in 4997, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=4997)
0.33333334 = coord(1/3)
0.17785178 = weight(_text_:2f in 4997) [ClassicSimilarity], result of:
0.17785178 = score(doc=4997,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.46834838 = fieldWeight in 4997, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=4997)
0.5 = coord(2/4)
- Content
- PhD Dissertation at International Doctorate School in Information and Communication Technology. Vgl.: https%3A%2F%2Fcore.ac.uk%2Fdownload%2Fpdf%2F150083013.pdf&usg=AOvVaw2n-qisNagpyT0lli_6QbAQ.
-
Malsburg, C. von der: ¬The correlation theory of brain function (1981)
0.12
0.118567854 = product of:
0.23713571 = sum of:
0.059283927 = product of:
0.17785178 = sum of:
0.17785178 = weight(_text_:3a in 76) [ClassicSimilarity], result of:
0.17785178 = score(doc=76,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.46834838 = fieldWeight in 76, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=76)
0.33333334 = coord(1/3)
0.17785178 = weight(_text_:2f in 76) [ClassicSimilarity], result of:
0.17785178 = score(doc=76,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.46834838 = fieldWeight in 76, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=76)
0.5 = coord(2/4)
- Source
- http%3A%2F%2Fcogprints.org%2F1380%2F1%2FvdM_correlation.pdf&usg=AOvVaw0g7DvZbQPb2U7dYb49b9v_
-
Huo, W.: Automatic multi-word term extraction and its application to Web-page summarization (2012)
0.12
0.115814 = product of:
0.231628 = sum of:
0.21342213 = weight(_text_:2f in 563) [ClassicSimilarity], result of:
0.21342213 = score(doc=563,freq=2.0), product of:
0.3797425 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.04479146 = queryNorm
0.56201804 = fieldWeight in 563, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.046875 = fieldNorm(doc=563)
0.018205874 = product of:
0.036411747 = sum of:
0.036411747 = weight(_text_:22 in 563) [ClassicSimilarity], result of:
0.036411747 = score(doc=563,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.23214069 = fieldWeight in 563, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=563)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Content
- A Thesis presented to The University of Guelph In partial fulfilment of requirements for the degree of Master of Science in Computer Science. Vgl. Unter: http://www.inf.ufrgs.br%2F~ceramisch%2Fdownload_files%2Fpublications%2F2009%2Fp01.pdf.
- Date
- 10. 1.2013 19:22:47
-
Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000)
0.11
0.11066668 = product of:
0.22133335 = sum of:
0.17885299 = weight(_text_:engines in 3445) [ClassicSimilarity], result of:
0.17885299 = score(doc=3445,freq=2.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.7858995 = fieldWeight in 3445, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.109375 = fieldNorm(doc=3445)
0.042480372 = product of:
0.084960744 = sum of:
0.084960744 = weight(_text_:22 in 3445) [ClassicSimilarity], result of:
0.084960744 = score(doc=3445,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.5416616 = fieldWeight in 3445, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=3445)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Date
- 25. 8.2005 17:42:22
-
Dunning, A.: Do we still need search engines? (1999)
0.11
0.11066668 = product of:
0.22133335 = sum of:
0.17885299 = weight(_text_:engines in 6021) [ClassicSimilarity], result of:
0.17885299 = score(doc=6021,freq=2.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.7858995 = fieldWeight in 6021, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.109375 = fieldNorm(doc=6021)
0.042480372 = product of:
0.084960744 = sum of:
0.084960744 = weight(_text_:22 in 6021) [ClassicSimilarity], result of:
0.084960744 = score(doc=6021,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.5416616 = fieldWeight in 6021, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6021)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Source
- Ariadne. 1999, no.22
-
Hsieh-Yee, I.: ¬The retrieval power of selected search engines : how well do they address general reference questions and subject questions? (1998)
0.11
0.11060197 = product of:
0.22120394 = sum of:
0.19996375 = weight(_text_:engines in 2186) [ClassicSimilarity], result of:
0.19996375 = score(doc=2186,freq=10.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.87866247 = fieldWeight in 2186, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.0546875 = fieldNorm(doc=2186)
0.021240186 = product of:
0.042480372 = sum of:
0.042480372 = weight(_text_:22 in 2186) [ClassicSimilarity], result of:
0.042480372 = score(doc=2186,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.2708308 = fieldWeight in 2186, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=2186)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- Evaluates the performance of 8 major Internet search engines in answering 21 real reference questions and 5 made up subject questions. Reports on the retrieval and relevancy ranking abilities of the search engines. Concludes that the search engines did not produce good results for the reference questions unlike for the subject questions. The best engines are identified by type of questions, with Infoseek best for the subject questions, and OpenText best for refrence questions
- Date
- 25.12.1998 19:22:51
-
Su, L.T.: ¬A comprehensive and systematic model of user evaluation of Web search engines : Il. An evaluation by undergraduates (2003)
0.11
0.10858273 = product of:
0.21716546 = sum of:
0.2019939 = weight(_text_:engines in 2117) [ClassicSimilarity], result of:
0.2019939 = score(doc=2117,freq=20.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.88758314 = fieldWeight in 2117, product of:
4.472136 = tf(freq=20.0), with freq of:
20.0 = termFreq=20.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.0390625 = fieldNorm(doc=2117)
0.015171562 = product of:
0.030343125 = sum of:
0.030343125 = weight(_text_:22 in 2117) [ClassicSimilarity], result of:
0.030343125 = score(doc=2117,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.19345059 = fieldWeight in 2117, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2117)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- This paper presents an application of the model described in Part I to the evaluation of Web search engines by undergraduates. The study observed how 36 undergraduate used four major search engines to find information for their own individual problems and how they evaluated these engines based an actual interaction with the search engines. User evaluation was based an 16 performance measures representing five evaluation criteria: relevance, efficiency, utility, user satisfaction, and connectivity. Non-performance (user-related) measures were also applied. Each participant searched his/ her own topic an all four engines and provided satisfaction ratings for system features and interaction and reasons for satisfaction. Each also made relevance judgements of retrieved items in relation to his/her own information need and participated in post-search Interviews to provide reactions to the search results and overall performance. The study found significant differences in precision PR1 relative recall, user satisfaction with output display, time saving, value of search results, and overall performance among the four engines and also significant engine by discipline interactions an all these measures. In addition, the study found significant differences in user satisfaction with response time among four engines, and significant engine by discipline interaction in user satisfaction with search interface. None of the four search engines dominated in every aspect of the multidimensional evaluation. Content analysis of verbal data identified a number of user criteria and users evaluative comments based an these criteria. Results from both quantitative analysis and content analysis provide insight for system design and development, and useful feedback an strengths and weaknesses of search engines for system improvement
- Date
- 24. 1.2004 18:27:22
-
Conhaim, W.W.: Search tools (1996)
0.10
0.10064654 = product of:
0.20129308 = sum of:
0.17701858 = weight(_text_:engines in 4738) [ClassicSimilarity], result of:
0.17701858 = score(doc=4738,freq=6.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.7778389 = fieldWeight in 4738, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.0625 = fieldNorm(doc=4738)
0.024274498 = product of:
0.048548996 = sum of:
0.048548996 = weight(_text_:22 in 4738) [ClassicSimilarity], result of:
0.048548996 = score(doc=4738,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.30952093 = fieldWeight in 4738, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=4738)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- Describes the 3 most popular searching tools for the WWW: InfoSeek, Yahoo and Lycos. Searching Internet directories can also be a useful search technique. Lists other searching engines. Points out a number of evaluations of these search engines published on the WWW. A number of search tools are available for specialized areas. Sites are available that enable parallel searching using several tools at once. Describes WWW pages with information about search engines
- Date
- 1. 8.1996 22:39:31
-
Notess, G.R.: Toward more comprehensive Web searching : single searching versus megasearching (1998)
0.10
0.10064654 = product of:
0.20129308 = sum of:
0.17701858 = weight(_text_:engines in 3278) [ClassicSimilarity], result of:
0.17701858 = score(doc=3278,freq=6.0), product of:
0.22757743 = queryWeight, product of:
5.080822 = idf(docFreq=746, maxDocs=44218)
0.04479146 = queryNorm
0.7778389 = fieldWeight in 3278, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.080822 = idf(docFreq=746, maxDocs=44218)
0.0625 = fieldNorm(doc=3278)
0.024274498 = product of:
0.048548996 = sum of:
0.048548996 = weight(_text_:22 in 3278) [ClassicSimilarity], result of:
0.048548996 = score(doc=3278,freq=2.0), product of:
0.15685207 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04479146 = queryNorm
0.30952093 = fieldWeight in 3278, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=3278)
0.5 = coord(1/2)
0.5 = coord(2/4)
- Abstract
- In spite of their size, the major Web indexes are not comprehensive. Considers approaches carrying out comprehensive searches, highlighting their advantages and disadvantages. In the single search tool approach, users search the largest of the databses one by one, using the command language uniqe to each to increase the precision of the esearch. In the megasearch approach, search engines use 1 form that simultaneously seands a single query to a number of search engines and then presents the results. Inference Find, Dogpile and MetaFind are examples of good metasearch engines
- Source
- Online. 22(1998) no.2, S.73-76
