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| 1 | Formal Definition of a User-Adaptive and Length-Optimal Routing Graph for Complex Indoor Environments显示文摘Car routing solutions are omnipresent and solutions for pedestrians also exist.Furthermore,public or commercial buildings are getting bigger and the complexity of their internal structure has increased.Consequently,the need for indoor routing solutions has emerged.Some prototypes are available,but they still lack semantically-enriched modelling (e.g.,access constraints,labels,etc.) and are not suitable for providing user-adaptive length-optimal routing in complex buildings.Previous approaches consider simple rooms,concave rooms,and corridors,but important characteristics such as distinct areas in huge rooms and solid obstacles inside rooms are not considered at all,although such details can increase navigation accuracy.By formally defining a weighted indoor routing graph,it is possible to create a detailed and user-adaptive model for route computation.The defined graph also contains semantic information such as room labels,door accessibility constraints,etc.Furthermore,one-way paths inside buildings are considered,as well as three-dimensional building parts,e.g.,elevators or stairways.A hierarchical structure is also possible with the presented graph model. | GOETZ Marcus ZIPF Alexander | 2011 | Geo-Spatial Information Science2011，14，2： | 7 |
| 2 | An exploratory analysis of usability of Flickr tags for land use/land cover attribution显示文摘This study explored the land use/land cover(LULC)separability by the machine-generated and user-generated Flickr photo tags(i.e.the auto-tags and the user-tags,respectively),based on an authoritative LULC dataset for San Diego County in the United States.Ten types of LULCs were derived from the authoritative dataset.It was observed that certain types of the reclassified LULCs had abundant tags(e.g.the parks)or a high tag density(e.g.the commercial lands),compared with the less populated ones(e.g.the agricultural lands).Certain highly weighted terms of the tags derived based on a term frequency–inverse document frequency weighting scheme were helpful for identifying specific types of the LULCs,especially for the commercial recreation lands(e.g.the zoos).However,given the 10 sets of tags retrieved from the corresponding 10 types of LULCs,one set of tags(all the tags located at one specific type of the LULCs)could not fully delineate the corresponding LULC due to semantic overlaps,according to a latent semantic analysis. | Yingwei Yan Michael Schultz Alexander Zipf | 2019 | Geo-Spatial Information Science2019，22，1： | 4 |
| 3 | The P1 PS/D Hypothesis: On the Inter- city Movement of Persons显示文摘 | Zipf G K | 1946 | American Sociologi- calReview1946，11，6： | 1 |
| 4 | Towards Defining a Framework for the Automatic Derivation of 3D CityGML Models from Volunteered Geographic Information显示文摘 | Marcus Goetz Alexander Zipf | 2012 | International Journal of 3-D Information Modeling (IJ3DIM)2012，，2： | 1 |
| 5 | Technology-enhanced Project Management显示文摘 | Zipf P.J | | 0，，1： | 1 |
| 6 | Using focus maps to ease map reading:Developing smart applications for mobile devices显示文摘 | Alexander Zipf Kai-Florian Richter | 2002 | Kunstliche Intelligenz2002，4，： | 1 |
| 7 | Location-based mobile tourist services-first user experiences 显示文摘 | Schmidt-Belz B Zipf A Laamanen H | 2003 | Information and Communication Technologies in Tourism2003，，： | 1 |
| 8 | Characterization of alterations in glucose and insulin metabolism in Prader-Willi subjects显示文摘 | Schuster DP Osei K Zipf WB | | 0，，： | 1 |
| 9 | High temperature latent heat storage with a screw heat exchang- er: Design of prototype 显示文摘 | Verena Zipf Anton Neuhauser Daniel Willert | 2013 | Applied Energy2013，109，： | 1 |
| 10 | Histological findings in chronic pancreatitis after abdominal radiotherapy显示文摘 | Schoonbroodt D Zipf A Herrmann G | | 0，，03： | 1 |
| 11 | The P1P2/D hypothesis:On the intercity movement of persons显示文摘 | Zipf G K | 1946 | American Sociological Review1946，11，6： | 1 |
| 12 | Binocular fixation pattern 显示文摘 | Zipf RF | 1976 | Arch Ophthalmol1976，94，3： | 1 |
| 13 | Simple sequence repeats as useful resources to study transcribed genes of cotton显示文摘 | Sukumar Saha Mehmet Karaca Johnie N. Jenkins Allan E. Zipf O. Umesh K. Reddy Ramesh V. Kantety | 2003 | Euphytica2003，，3： | 1 |
| 14 | Human behavior and the principle of least effort 显示文摘 | ZIPF G K | 1949 | Journal of Clinical Psychology1949，6，3： | 1 |
| 15 | The PIP2/D hypothesis : on the intercity move-ment of persons 显示文摘 | ZIPF G K | 1946 | American SociologicalReview1946，，12： | 1 |
| 16 | OpenStreetMap data quality enrichment through awareness raising and collective action tools——experiences from a European project显示文摘Nowadays,several research projects show interest in employing volunteered geographic information(VGI)to improve their systems through using up-to-date and detailed data.The European project CAP4Access is one of the successful examples of such international-wide research projects that aims to improve the accessibility of people with restricted mobility using crowdsourced data.In this project,OpenStreetMap(OSM)is used to extend OpenRouteService,a well-known routing platform.However,a basic challenge that this project tackled was the incompleteness of OSM data with regards to certain information that is required for wheelchair accessibility(e.g.sidewalk information,kerb data,etc.).In this article,we present the results of initial assessment of sidewalk data in OSM at the beginning of the project as well as our approach in awareness raising and using tools for tagging accessibility data into OSM database for enriching the sidewalk data completeness.Several experiments have been carried out in different European cities,and discussion on the results of the experiments as well as the lessons learned are provided.The lessons learned provide recommendations that help in organizing better mapping party events in the future.We conclude by reporting on how and to what extent the OSM sidewalk data completeness in these study areas have benefited from the mapping parties by the end of the project. | Amin Mobasheri Alexander Zipf Louise Francis | 2018 | Geo-Spatial Information Science2018，21，3： | 1 |
| 17 | The P1 P2/D Hypothesis:on the Intercity Movement of Persons显示文摘 | Zipf G K | 1946 | American Sociological Review1946，，12： | 1 |
| 18 | Routing through open spaces-A performance comparison of algorithms显示文摘Finding the shortest path through open spaces is a well-known challenge for pedestrian routing engines.A common solution is routing on the open space boundary,which causes in most cases an unnecessarily long route.A possible alternative is to create a subgraph within the open space.This paper assesses this approach and investigates its implications for routing engines.A number of algorithms(Grid,Spider-Grid,Visibility,Delaunay,Voronoi,Skeleton)have been evaluated by four different criteria:(i)Number of additional created graph edges,(ii)additional graph creation time,(iii)route computation time,(iv)routing quality.We show that each algorithm has advantages and disadvantages depending on the use case.We identify the algorithms Visibility with a reduced number of edges in the subgraph and Spider-Grid with a large grid size to be a good compromise in many scenarios. | Stefan Hahmann Jakob Miksch Bernd Resch Johannes Lauer Alexander Zipf | 2018 | Geo-Spatial Information Science2018，21，3： | 1 |
| 19 | Acute mixed lineage leukemia: clinicopathologic correlations and prognostic significance 显示文摘 | Zipf TF Pui CH | 1985 | Blood1985，66，： | 1 |
| 20 | The Hypothesis:on the intercity movement of persons显示文摘 | | 1946 | American Sociological Review1946，，： | 1 |
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