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 %{1Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or  !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!  @n?" dd@  @@`` X E!!     /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd :A 0Tppp@ <4!d!dL$ 0<4ddddL$ 0 <4BdBdL # 0PowerPoint Document(/DocumentSummaryInformation8e0}fԚ New Roman0z[ 0 DTahomaew Roman0z[ 0"0DWingdingsRoman0z[ 0@DArialngsRoman0z[ 0"@ .  @n?" dd@  @@`` Pq E!!   /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd z[ 0Dppp@ <4!d!dL 0T<4ddddL 0T <4BdBdL< 080___PPT10 ?  %1Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333Research Issues: Beyond the WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Organizing and finding information Sensor networks Handling of transient, high-volume data streams Mobile and location-based applications Modeling of physical space to support, e.g., semantic nearest neighbors (time and space) Algorithms for processing nearest-neighbor, k-nn, window and continuous queries`#1'`#1 ' q  Research Issues: Mobile Web[Modeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queriesNYA33Q 337,e y  P0(  Px P c $tZ$P`   x P c $D$0  H P 0޽h ? ̙33y___PPT10Y+D=' = @B +rRY gn? .Yp  ( D/ 0|DTimes New Roman0z[ 0De0}fԚ New Roman080___PPT10 ?  %51Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of՜.+,0     dOn-screen Show CSD-HKUSTSh/;{ Times New Roman sөTahoma WingdingsArialLayers2Database Issues for the Web - Dasfaa 2003 Panel -Characteristics of the WebWhy is Googl the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333Research Issues: Beyond the WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Organizing and finding information Sensor networks Handling of transient, high-volume data streams Mobile and location-based applications Modeling of physical space to support, e.g., semantic nearest neighbors (time and space) Algorithms for processing nearest-neighbor, k-nn, window and continuous queries`#1'`#1 ' q  Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves alongfYA33Q 337>er? e  ( D/ 0|DTimes New Roman0z[ 0De0}fԚ New Roman0z[ 0 DTahomaew Roman0z[ 0"0DWingdingsRoman0z[ 0@DArialngsRoman0z[ 0"@ .  @n?" dd@  @@`` Pq E!!   /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd z[ 0Dppp@ <4!d!dL 0T<4ddddL 0T <4BdBdL< 080___PPT10 ?  %1Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333Research Issues: Beyond the WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Organizing and finding information Sensor networks Handling of transient, high-volume data streams Mobile and location-based applications Modeling of physical space to support, e.g., semantic nearest neighbors (time and space) Algorithms for processing nearest-neighbor, k-nn, window and continuous queries`#1'`#1 ' q  Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,ey  P0(  Px P c $tZ$P`   x P c $D$  H P 0޽h ? ̙33y___PPT10Y+D=' = @B +r ? u(  ,( D/ 0|DTimes New Roman0z[ 0De0}fԚ New Roman0z[ 0 DTahomaew Roman0z[ 0"0DWingdingsRoman0z[ 0@DArialngsRoman0z[ 0"@ .  @n?" dd@  @@`` Tq E!!    /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd z[ 0Dppp@ <4!d!dL 0T<4ddddL 0T <4BdBdL< 080___PPT10 ?  %1Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Organizing and finding information Sensor networks Handling of transient, high-volume data streams Data broadcast from sensor to sensor: filtering on-the-aird`#k`#ky  T0(  Tx T c $<= $P`   x T c $> $0   H T 0޽h ? ̙33y___PPT10Y+D=' = @B +rd ? @  I( D/ 0|DTimes New Roman0z[ 0De0}fԚ New Roman0z[ 0 DTahomaew Roman0z[ 0"0DWingdingsRoman0z[ 0@DArialngsRoman0z[ 0"@ .  @n?" dd@  @@`` Tq E!!    /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd z[ 0Dppp@ <4!d!dL 0T<4ddddL 0T <4BdBdL< 080___PPT10 ?  %1Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data Data broadcast; message hopping across the network Filter on-the-air N`jE`jE y  T0(  Tx T c $<= $P`   x T c $> $0   H T 0޽h ? ̙33y___PPT10Y+D=' = @B +rU ? 1'  ( D/ 0|DTimes New Roman0z[ 0De0}fԚ New Roman0z[ 0 DTahomaew Roman0z[ 0"0DWingdingsRoman0z[ 0@DArialngsRoman0z[ 0"@ .  @n?" dd@  @@`` Tq E!!    /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd z[ 0Dppp@ <4!d!dL 0T<4ddddL 0T <4BdBdL< 080___PPT10 ?  %1Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data How to announce availability of new data or updates? Data broadcast; message hopping across the network Filter on-the-air Finding information on the network Limited bandwidth and batter power: continuous active querying is discouraged v`jz#N`jz#Ny  T0(  Tx T c $<= $P`   x T c $> $0   H T 0޽h ? ̙33y___PPT10Y+D=' = @B +rc `? ?  '( D/ 0|DTimes New Roman0z[ 0De0}fԚ New Roman0z[ 0 DTahomaew Roman0z[ 0"0DWingdingsRoman0z[ 0@DArialngsRoman0z[ 0"@ .  @n?" dd@  @@`` Tq E!!    /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd z[ 0Dppp@ <4!d!dL 0T<4ddddL 0T <4BdBdL< 080___PPT10 ?  %1Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data How to announce availability of new data or updates? Data broadcast; message hopping across the network Filter on-the-air Finding information on the network Limited bandwidth and batter power: continuous active querying is discouraged `jz#N33JD 33z33Ny  T0(  Tx T c $<= $P`   x T c $> $0   H T 0޽h ? ̙33y___PPT10Y+D=' = @B +r L?   ( D/ 0|DTimes New Roman0:A 0De0}fԚ New Roman0:A 0 DTahomaew Roman0:A 0"0DWingdingsRoman0:A 0@DArialngsRoman0:A 0@ .Root EntrydO)R.@PicturesgCurrent User 8SummaryInformation(T    0-"#$%&'()*+, /y123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrst z{|}~ of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data How to announce availability of new data or updates? Data broadcast; message hopping across the network Filter on-the-air Finding information on the network Limited bandwidth and batter power: continuous active querying is discouraged `jz#N33JD 33z33N Summary   X((  Xr X S 3$@`0  3  X 6("`@ Re so SuccessfulBeyond Google Research Issues: mining meaningResearch Issues: Mobile WebResearch Issues: Wireless WebSummary  Fonts UsedDesign Template Slide Titles _ 9bluechrybluechry-,$@ 0 OUbiquitous information access X 6p!"` :  ,$D 0 T"Ubiquitous information publication##l  H`  X  ,$D 0  X <0   CMobile/wireless webZB  X s *DHXZB  X s *D ` t8  `  X00  X 6@"`  Rgoogle X 6ğ"`P `  OClustering, term suggestion X 6"`0 ` p CpersonalizationZB  X s *D p ZB  X s *Dp0P H X 0޽h ? 3333̙3#  ___PPT10 .!oF+D_ ' = @B D ' = @BA?%,( < +O%,( < +D`' =%(D' =%(DT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XDT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XD' =%(D' =%(D9' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-u6Bdiamond(in)*<3<*X+p+0+X ++0+X +r  0mC ( D/ 0|DTimes New Roman0:A 0De0}fԚ New Roman0:A 0 DTahomaew Roman0:A 0"0DWingdingsRoman0:A 0@DArialngsRoman0:A 0@ .  @n?" dd@  @@`` X E!!     /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd :A 0Tppp@ <4!d!dL$ 0<4ddddL$ 0 <4BdBdL # 080___PPT10 ?  %51Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data How to announce availability of new data or updates? Data broadcast; message hopping across the network Filter on-the-air Finding information on the network Limited bandwidth and batter power: continuous active querying is discouraged `jz#N33JD 33z33N Summary #  X8(  Xr X S 3$@`0  3  X 6("`@ R-,$@ 0 OUbiquitous information access X 6p!"` :  ,$D 0 T"Ubiquitous information publication##l  H`  X  ,$D 0  X <0   CMobile/wireless webZB  X s *DHXZB  X s *D ` 8  `  X P  X 6@"`  Rgoogle X 6ğ"`P `  OClustering, term suggestion X 6"`0 ` p SPersonalization, query tracking  ZB  X s *D p ZB  X s *Dp0P H X 0޽h ? 3333̙3#  ___PPT10 .!oF+D_ ' = @B D ' = @BA?%,( < +O%,( < +D`' =%(D' =%(DT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XDT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XD' =%(D' =%(D9' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-u6Bdiamond(in)*<3<*X+p+0+X ++0+X +rC xZmCm ( D/ 0|DTimes New Roman0:A 0De0}fԚ New Roman0:A 0 DTahomaew Roman0:A 0"0DWingdingsRoman0:A 0@DArialngsRoman0:A 0@ .  @n?" dd@  @@`` X~ E!!     /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd :A 0Tppp@ <4!d!dL$ 0<4ddddL$ 0 <4BdBdL # 080___PPT10 ?  %51Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data How to announce availability of new data or updates? Data broadcast; message hopping across the network Filter on-the-air Finding information on the network Limited bandwidth and batter power: continuous active querying is discouraged `jz#N33JD 33z33N Summary   }u X(  Xr X S 3$@`0  3  X 6("`@ R-,$@ 0 OUbiquitous information access X 6p!"` :  ,$D 0 T"Ubiquitous information publication##l  H`  X  ,$D 0  X <0   CMobile/wireless webZB  X s *DHXZB  X s *D `  X <@"` W  cgoogle, link analysis X 6ğ"`  _+Clustering, term suggestion, query tracking,, X <"`^  SPersonalization, query tracking  XB  X 0D ^ XB  X 0DPH X 0޽h ? 3333̙3#  ___PPT10 .!oF+D_ ' = @B D ' = @BA?%,( < +O%,( < +D`' =%(D' =%(DT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XDT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XD' =%(D' =%(D9' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-u6Bdiamond(in)*<3<*X+p+0+X ++0+X +rm kmmk ( D/ 0|DTimes New Roman0:A 0De0}fԚ New Roman0:A 0 DTahomaew Roman0:A 0"0DWingdingsRoman0:A 0@DArialngsRoman0:A 0@ .  @n?" dd@  @@`` X~ E!!     /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd :A 0Tppp@ <4!d!dL$ 0<4ddddL$ 0 <4BdBdL # 080___PPT10 ?  %51Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data How to announce availability of new data or updates? Data broadcast; message hopping across the network Filter on-the-air Finding information on the network Limited bandwidth and batter power: continuous active querying is discouraged `jz#N33JD 33z33N Summary   }u X(  Xr X S 3$@`0  3  X 6("`@ R-,$@ 0 OUbiquitous information access X 6p!"` :  ,$D 0 T"Ubiquitous information publication##l  H`  X  ,$D 0  X <0   CMobile/wireless webZB  X s *DHXZB  X s *D `  X <@"` @9  cgoogle, link analysis X 6ğ"`  _+Clustering, term suggestion, query tracking,, X <"`^  SPersonalization, query tracking  XB  X 0D ^ XB  X 0DPH X 0޽h ? 3333̙3#  ___PPT10 .!oF+D_ ' = @B D ' = @BA?%,( < +O%,( < +D`' =%(D' =%(DT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XDT' =A@BBB B0B%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-6B'blinds(horizontal)*<3<*XD' =%(D' =%(D9' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*X%(D' =-u6Bdiamond(in)*<3<*X+p+0+X ++0+X +r 3m3 ( D/ 0|DTimes New Roman0:A 0De0}fԚ New Roman0:A 0 DTahomaew Roman0:A 0"0DWingdingsRoman0:A 0@DArialngsRoman0:A 0@ .  @n?" dd@  @@`` X~ E!!     /XR$ӵjVI1gcb$ mQF&Pgc 0AAp33̙@8  ʚ;Sk8ʚ;g4KdKd :A 0Tppp@ <4!d!dL$ 0<4ddddL$ 0 <4BdBdL # 080___PPT10 ?  %51Database Issues for the Web - Dasfaa 2003 Panel -22YDik Lun Lee Department of Computer Science Hong Kong University of Science and Technology,Z NSCharacteristics of the WebPublication of information by: Businesses, large and small Individuals No global rules or structures: structures and rules are spontaneously created by web authors Result: we can only discover, not control, the webh))r3333 Why is Google so SuccessfulExploit collective opinions of web authors Use link analysis to identify web pages of high authority and/or quality Use anchor texts as an indicator for web page theme Both are created by human authors Large scale ensures robustnessr+}A+0 3333.33A Beyond Google"Web communities Topic distillationResearch Issues: mining meaningDerivation of concise and precise web communities Link and content analysis Integration of multiple sources of  intelligence : Click-stream, search engine log, human-created directories: Open Directory and ontological databases Creation of multiple hierarchies between communities Topic drifting: restructuring of communities and their corresponding topics; migration of  drifted pages to another community Implementation: centralized versus peer-to-peer`23333 Research Issues: Mobile WebModeling of physical space to support, e.g., semantic nearest neighbors (time and space) I am at the Kansei airport now, lead me to the platform for the Kyoto-bound train Fine-grain, step by step instructions Continuous monitoring to ensure I am at the right place at the right time Processing nearest-neighbor, k-nn, window and continuous queries Indexing of locations of data objects Specialized index for NN and k-NN queries Caching: validation of answers as user moves along Connection: point-to-point, broadcast, continuousYA33Qx ̙@ 33$ ̙ ,e Research Issues: Wireless WebWireless mesh networks: nodes are connected wirelessly; peer-to-peer network with limited reach Applications: sensor networks, low-cost substitution of 3G networks Dissemination of large volume of data How to announce availability of new data or updates? Data broadcast; message hopping across the network Filter on-the-air Finding information on the network Limited bandwidth and batter power: continuous active querying is discouraged `jz#N33JD 33z33N Summary romK