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Geographical topic discovery and comparison

Zhijun Yin, Liangliang Cao, Jiawei Han, Chengxiang Zhai, Thomas Huang
2011 Proceedings of the 20th international conference on World wide web - WWW '11  
(2) how to compare several topics across different geographical locations?  ...  LGTA works well in all these datasets at not only finding regions of interests but also providing effective comparisons of the topics across different locations.  ...  To support topic comparison in different locations, we define the topic distribution in geographical location as follows. Definition 3.  ... 
doi:10.1145/1963405.1963443 dblp:conf/www/YinCHZH11 fatcat:hwtfcauxobeflp3qlb5hvws2aa

A location-based news article recommendation with explicit localized semantic analysis

Jeong-Woo Son, A-Yeong Kim, Seong-Bae Park
2013 Proceedings of the 36th international ACM SIGIR conference on Research and development in information retrieval - SIGIR '13  
Every location has its own geographical topics, which can be captured from the geo-tagged documents related to the location.  ...  Another advantage of ELSA is that it allows a simple comparison of the user location and news articles, because it projects both locations and articles onto an identical space composed of Wikipedia topics  ...  These global topics are important in PESA, since PESA focuses on location comparison in which similar locations share geographical topics.  ... 
doi:10.1145/2484028.2484064 dblp:conf/sigir/SonKP13 fatcat:qzn7se5vnje5nnuwnwlf7yczvq

VAiRoma: A Visual Analytics System for Making Sense of Places, Times, and Events in Roman History

Isaac Cho, Wewnen Dou, Derek Xiaoyu Wang, Eric Sauda, William Ribarsky
2016 IEEE Transactions on Visualization and Computer Graphics  
We evaluated VAiRoma with 16 participants through a user study, with the task being to learn about roman piazzas through finding relevant articles and new relationships.  ...  This is an example of a subject with great sweep (with many interrelated sub-topics over, in this case, a 3,000 year history) that is hard to grasp by any individual and, in its full detail, is not available  ...  Comparison between Two Different Time Ranges To support another important knowledge-fostering function, the VAiRoma interface permits the comparison of geographic patterns side by side to allow the user  ... 
doi:10.1109/tvcg.2015.2467971 pmid:26529701 fatcat:llf5zilnazau7jmdxipvyhtkla

Unnamed locations, underspecified regions, and other linguistic phenomena in geographic annotation of water-based locations

Johannes Leveling
2010 Proceedings of the 6th Workshop on Geographic Information Retrieval - GIR '10  
Results of the geographic annotation indicate that i) topics aiming at locations close to water contain a wide variety of spatial relations (indicated by different prepositions), ii) unnamed locations  ...  This short paper investigates how locations in or close to water masses in topics and documents (e.g. rivers, seas, oceans) are referred to.  ...  For comparison, the average number of relevant documents per topic for the set of all topics excluding the selected topics is 29.9 (2598 relevant documents for the remaining 87 GeoCLEF topics).  ... 
doi:10.1145/1722080.1722084 dblp:conf/gir/Leveling10 fatcat:rvbvgkfuazevfo6lw5sjqpckpa

Privacy Inference Attack Against Users in Online Social Networks: A Literature Review

Yangheran Piao, Kai Ye, Xiaohui Cui
2021 IEEE Access  
However, the transmission of users' personal information through social networks will inevitably lead to privacy leakage and make users attacked.  ...  The purpose of this retrospective study is to provide a global summary, summarizing the time trend of the topic, and show the evolution of the topic in the past 15 years.  ...  TABLE 10 . 10 Comparison between datasets and measurements of other geographic location inference methods. TABLE 11 . 11 Comparison between datasets and measurements of location-based methods.  ... 
doi:10.1109/access.2021.3064208 fatcat:rljfmzrkenfctjpcgpzrpvmume

Spatial topic modeling in online social media for location recommendation

Bo Hu, Martin Ester
2013 Proceedings of the 7th ACM conference on Recommender systems - RecSys '13  
against existing state-of-the-art recommendation algorithms and geographical topic models.  ...  ., we explore topic modeling considering the spatial and textual aspects of user posts, and predict future user locations.  ...  Particularly, users have different topic distributions, and topics have different location distributions, so that the dependency between user interests and user locations is transferred through the topic  ... 
doi:10.1145/2507157.2507174 dblp:conf/recsys/HuE13 fatcat:rt4dc447wbha3ayklbjgdkpcxa

Geographical Latent Variable Models for Microblog Retrieval [chapter]

Alexander Kotov, Vineeth Rakesh, Eugene Agichtein, Chandan K. Reddy
2015 Lecture Notes in Computer Science  
and a topic model that can separate background from geographically-specific topics.  ...  In this work, we propose simple and scalable geographical latent variable generative models and a method to improve the accuracy of retrieval from collections of geo-tagged documents through document expansion  ...  The distribution of geographical locations of the authors of relevant tweets for this topic is shown in Figure 1 .  ... 
doi:10.1007/978-3-319-16354-3_70 fatcat:lclga4ijovf45hd64jkemouq34

Of Oxen and Birds

Grant McKenzie, Benjamin Adams, Krzysztof Janowicz
2015 Proceedings of the 8th ACM SIGSPATIAL International Workshop on Location-Based Social Networks - LBSN'15  
This work takes a first step in exploring this novel type of data through a range of textual, topical, and spatial data exploration methods.  ...  The landscape of social media applications is littered with novel approaches to using location information.  ...  In contrast, Yik Yak topic 36 and Twitter topic 32 are highly dissimilar. This is supported through examination of the top words associated with the topics (Figures 1c and 1d ).  ... 
doi:10.1145/2830657.2830659 dblp:conf/gis/McKenzieAJ15 fatcat:m2qtqbjk2veuxmz5ykf5rzyh6i

Assessing geographic relevance for mobile search: A computational model and its validation via crowdsourcing

Tumasch Reichenbacher, Stefano De Sabbata, Ross S. Purves, Sara I. Fabrikant
2016 Journal of the Association for Information Science and Technology  
, and co-location.  ...  We present two methods for assessing geographic relevance (GR) of geographic entities in a mobile use context that include the five criteria topicality, spatiotemporal proximity, directionality, cluster  ...  Acknowledgments The presented work is part of the project 'Geographic Relevance in Mobile Applications' funded by the Swiss National Science Foundation (Project 200021_119819 / 1).  ... 
doi:10.1002/asi.23625 fatcat:aps4go2jfzehfo43oqdvektouq

Indexing implicit locations for geographical information retrieval

Zhisheng Li, Chong Wang, Xing Xie, Xufa Wang, Wei-Ying Ma
2006 Workshop on Geographic Information Retrieval  
How to retrieve geographical information correctly and efficiently is a key challenge to location-based search services.  ...  In this paper, we present a GIR (geographical information retrieval) system which uses implicit locations to improve retrieval performance.  ...  We can retrieve a set of documents related to the textual terms (snowstorms) through the text index and another set of documents whose geographical focuses are related to the query area through geographical  ... 
dblp:conf/gir/LiWXWM06 fatcat:dz37mtv5ifb4xmirsefaolg4pe

Page 270 of Rural Sociology Vol. 15, Issue 3 [page]

1950 Rural Sociology  
His affilia- tion at the of writing the article was considered as his geographical location.  ...  These three topics for general articles are depicted graphically by three-year moving averages in Figure I for the period 1936 through 1949.  ... 

Using the WordNet Ontology in the GeoCLEF Geographical Information Retrieval Task [chapter]

Davide Buscaldi, Paolo Rosso, Emilio Sanchis Arnal
2006 Lecture Notes in Computer Science  
Both a query expansion method, based on the expansion of geographical terms by means of WordNet synonyms and meronyms, and a method based on the expansion of index terms, which exploits WordNet synonyms  ...  We would like to thank also the CLEF 2005 organizing committee (this work is a revised version of the paper "A WordNet-based Query Expansion method for Geographical Information Retrieval").  ...  through WordNet, and a text index, containing the stems of text words that are not related to geographical entities.  ... 
doi:10.1007/11878773_105 fatcat:zh65j5l4z5cxrf4iirhh2a5lfm

Research on Personalized Minority Tourist Route Recommendation Algorithm Based on Deep Learning

Guanglu Liu, Baiyuan Ding
2022 Scientific Programming  
, geographic location factors, and user access frequency factors, using LDA topic models and matrix decomposition models to perform feature vectorization processing on user sign-in records and build deep  ...  This paper uses personalized mining of interest points of ethnic minority tourism demand groups, extracts customer data features in social networks, and constructs data features of interesting topic factors  ...  is paper uses feature extraction of user check-in data in social networks to construct data features of interest topic factors, geographic location factors, and user access frequency factors. e LDA topic  ... 
doi:10.1155/2022/8063652 fatcat:673kpgz2dbh4thmmnhxwoepdw4

Inferring the location of authors from words in their texts [article]

Max Berggren, Jussi Karlgren, Robert Östling, Mikael Parkvall
2016 arXiv   pre-print
Many texts are locatable through explicit labels but most have no explicit annotation of place.  ...  For the purposes of computational dialectology or other geographically bound text analysis tasks, texts must be annotated with their or their authors' location.  ...  Another approach is to model topics as inferred from vocabulary usage in text across their geographical distribution, and then, for each text, to assess the topic and thus its attendant location visavi  ... 
arXiv:1612.06671v1 fatcat:32d4ncvh5zbvtayiouommehbi4

A Focused Crawler for Borderlands Situation Information with Geographical Properties of Place Names

Dongyang Hou, Hao Wu, Jun Chen, Ran Li
2014 Sustainability  
To solve the problem, this paper firstly discusses the importance of place name in focused crawlers in terms of location and spatial relation, and, then, proposes the two-tuple-based topic representation  ...  However, current focused crawlers treat place name in the same way as any other common keyword, which has no geographical properties. This may reduce the effectiveness of focused crawlers.  ...  In focused crawler, a given topic about borderlands situation information can be reflected to certain locations through locations of place names.  ... 
doi:10.3390/su6106529 fatcat:ub5lqvowcvgq5gpmff7aod53te
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