22 results on '"bagged clustering"'
Search Results
2. Classification of Events Using Local Pair Correlation Functions for Spatial Point Patterns.
- Author
-
González, Jonatan A., Rodríguez-Cortés, Francisco J., Romano, Elvira, and Mateu, Jorge
- Subjects
- *
STATISTICAL correlation , *SUPPORT vector machines , *PROBLEM solving , *MULTIDIMENSIONAL scaling , *CLASSIFICATION - Abstract
Spatial point pattern analysis usually concerns identifying features in an observation window where there is also noise. This identification traditionally begins with studying the second-order properties of the point pattern, and it may be done locally by using local second-order characteristics (LISA). Some properties of this local structure solve the problem of classification into feature and clutter points. This paper proposes an estimator for local pair correlation LISA functions, discusses some of its properties and considers a particular distance to measure dissimilarities. Two classification procedures to separate feature from clutter points are described. One of them adopts multidimensional scaling and support vector machines, and the other employs bagged clustering. Simulations demonstrate the performance of the method, and it is applied to a dataset concerning earthquakes in a seismic nest located in Colombia. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
3. Unsupervised feature learning for self-tuning neural networks.
- Author
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Ryu, Jongbin, Yang, Ming-Hsuan, and Lim, Jongwoo
- Subjects
- *
VISUAL learning , *EUCLIDEAN distance , *MACHINE learning , *ALGORITHMS - Abstract
In recent years transfer learning has attracted much attention due to its ability to adapt a well-trained model from one domain to another. Fine-tuning is one of the most widely-used methods which exploit a small set of labeled data in the target domain for adapting the network. Including a few methods using the labeled data in the source domain, most transfer learning methods require labeled datasets, and it restricts the use of transfer learning to new domains. In this paper, we propose a fully unsupervised self-tuning algorithm for learning visual features in different domains. The proposed method updates a pre-trained model by minimizing the triplet loss function using only unlabeled data in the target domain. First, we propose the relevance measure for unlabeled data by the bagged clustering method. Then triplets of the anchor, positive, and negative data points are sampled based on the ranking violations of the relevance scores and the Euclidean distances in the embedded feature space. This fully unsupervised self-tuning algorithm improves the performance of the network significantly. We extensively evaluate the proposed algorithm using various metrics, including classification accuracy, feature analysis, and clustering quality, on five benchmark datasets in different domains. Besides, we demonstrate that applying the self-tuning method on the fine-tuned network help achieve better results. • Fully-unsupervised feature learning algorithm for neural networks. • Relevance score from the bagged clustering in random feature subspaces. • Ranking inconsistency of the relevance score and Euclidean distance for Triplet sampling. • Self-tuning neural networks from the Triplet samples. • Extensive Experiments to evaluate the self-tuning algorithm. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
4. Seasonal Concentration Decomposition of Cruise Tourism Demand in Southern Europe.
- Author
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Fernández-Morales, Antonio and Cisneros-Martínez, José David
- Subjects
- *
HARBOR management , *TOURISM , *TOURISM websites , *MEASURING instruments , *HARBORS - Abstract
This article analyzes cruise tourism seasonality in Southern Europe, assessing the seasonal concentration levels by means of the Gini index. The additive decomposition of this index is used to evaluate the contribution of each port to the global seasonal concentration in the regions where they are located. It also allows the estimation of marginal relative effects to identify the most propitious ports for reducing seasonality within the Mediterranean regions. The analysis is complemented by estimating the seasonal patterns of each port. Given the significant heterogeneity revealed in the regions analyzed, a bootstrapped bagged clustering is applied to classify the ports into homogeneous groups according to their seasonal patterns. The techniques used form a methodological framework that serves as a control and monitoring tool for measuring seasonal concentration levels in cruise tourism, allowing for policies against seasonality to be tailored for this segment. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
5. Comparing Clustering and Metaclustering Algorithms
- Author
-
Lozano, Elio, Acuña, Edgar, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, and Perner, Petra, editor
- Published
- 2011
- Full Text
- View/download PDF
6. Why wine tourists visit cellar doors: Segmenting motivation and destination image.
- Author
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Bruwer, Johan, Prayag, Girish, and Disegna, Marta
- Subjects
WINE tourism ,MARKETING strategy ,TOURISM marketing ,TOURIST attractions ,WINES - Abstract
Abstract: This study examines the relationship between the motivation of wine tourists to visit cellar doors and destination image perception. A survey of tourists resulted in 676 useable questionnaires. Using a novel segmentation method, self‐organizing maps, and bagged clustering, the study identified 5 distinct motivation clusters. These clusters were different on only gender and previous visit to the wine region. Three clusters of destination image were identified using the same segmentation method. Significant relationships were found between the motivation and destination image clusters. Implications for destination marketing and managing the tourist experience at the winery cellar door are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
7. Classification of Events Using Local Pair Correlation Functions for Spatial Point Patterns
- Author
-
Elvira Romano, Jorge Mateu, Francisco J. Rodríguez-Cortés, Jonatan A. González, González Jonatan, A., Rodríguez-Cortés Francisco, J., Romano, Elvira, and Mateu, Jorge
- Subjects
0106 biological sciences ,Statistics and Probability ,multidimensional scaling ,Computer science ,Point pattern analysis ,010603 evolutionary biology ,01 natural sciences ,010104 statistics & probability ,Feature (machine learning) ,bucaramanga nest ,Point (geometry) ,support vector machine ,Multidimensional scaling ,0101 mathematics ,pair correlation function ,Cluster analysis ,local indicator of spatial association ,General Environmental Science ,bagged clustering ,spatial point process ,business.industry ,Applied Mathematics ,Estimator ,Pattern recognition ,Agricultural and Biological Sciences (miscellaneous) ,Support vector machine ,Bagged clustering, Bucaramanga nest, Local indicator of spatial association, Multidimensional scaling, Pair correlation function, Spatial point process, Support Vector Machine ,Clutter ,Artificial intelligence ,Statistics, Probability and Uncertainty ,General Agricultural and Biological Sciences ,business - Abstract
Spatial point pattern analysis usually concerns identifying features in an observation window where there is also noise. This identification traditionally begins with studying the second-order properties of the point pattern, and it may be done locally by using local second-order characteristics (LISA). Some properties of this local structure solve the problem of classification into feature and clutter points. This paper proposes an estimator for local pair correlation LISA functions, discusses some of its properties and considers a particular distance to measure dissimilarities. Two classification procedures to separate feature from clutter points are described. One of them adopts multidimensional scaling and support vector machines, and the other employs bagged clustering. Simulations demonstrate the performance of the method, and it is applied to a dataset concerning earthquakes in a seismic nest located in Colombia.
- Published
- 2021
8. Segmenting Markets by Bagged Clustering: Young Chinese Travelers to Western Europe.
- Author
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Prayag, Girish, Disegna, Marta, Cohen, Scott Allen, and Yan, Hongliang (Gordon)
- Subjects
- *
TOURISM , *MARKETING research , *OUTBOUND tourism , *INBOUND tourism - Abstract
Market segmentation is ubiquitous in marketing. Hierarchical and nonhierarchical methods are popular for segmenting tourism markets. These methods are not without controversy. In this study, we use bagged clustering on the push and pull factors of Western Europe to segment potential young Chinese travelers. Bagged clustering overcomes some of the limitations of hierarchical and nonhierarchical methods. A sample of 403 travelers revealed the existence of four clusters of potential visitors. The clusters were subsequently profiled on sociodemographics and travel characteristics. The findings suggest a nascent young Chinese independent travel segment that cannot be distinguished on push factors but can be differentiated on perceptions of the current independent travel infrastructure in Western Europe. Managerial implications are offered on marketing and service provision to the young Chinese outbound travel market. [ABSTRACT FROM PUBLISHER]
- Published
- 2015
- Full Text
- View/download PDF
9. Bagged fuzzy clustering for fuzzy data: An application to a tourism market.
- Author
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D’Urso, Pierpaolo, Disegna, Marta, Massari, Riccardo, and Prayag, Girish
- Subjects
- *
FUZZY clustering technique , *DATA analysis , *TOURISM marketing , *CONSUMER behavior , *HETEROGENEITY , *TOURIST attractions - Abstract
Segmentation has several strategic and tactical implications in marketing products and services. Despite hard clustering methods having several weaknesses, they remain widely applied in marketing studies. Alternative segmentation methods such as fuzzy methods are rarely used to understand consumer behaviour. In this study, we propose a strategy of analysis, by combining the Bagged Clustering (BC) method and the fuzzy C -means clustering method for fuzzy data (FCM-FD), i.e., the Bagged fuzzy C -means clustering method for fuzzy data (BFCM-FD). The method inherits the advantages of stability and reproducibility from BC and the flexibility from FCM-FD. The method is applied on a sample of 328 Chinese consumers revealing the existence of four segments (Admirers, Enthusiasts, Moderates, and Apathetics) of the perceived images of Western Europe as a tourist destination. The results highlight the heterogeneity in Chinese consumers’ place preferences and implications for place marketing are offered. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
10. Segmenting visitors of cultural events: The case of Christmas Market.
- Author
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Brida, Juan Gabriel, Disegna, Marta, and Scuderi, Raffaele
- Subjects
- *
CULTURAL activities , *IMAGE segmentation , *DOCUMENT clustering , *MATHEMATICAL variables , *MOTIVATION (Psychology) , *TOURISM - Abstract
Highlights: [•] Bagged Clustering method is an alternative and effective method to clustering. [•] Bagged Clustering is suitable for different type of segmentation variables. [•] Ad-hoc survey was conducted among visitors of a cultural event. [•] Motivation (Likert) and travel spending (dummy) were used as segmentation variables. [•] Visitors are clustered according to motivations and travel spending separately. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
11. Why wine tourists visit cellar doors: Segmenting motivation and destination image
- Author
-
Girish Prayag, Johan Bruwer, Marta Disegna, Bruwer, Johan, Prayag, Girish, and Disegna, Marta
- Subjects
Self-organizing map ,wine tourists ,media_common.quotation_subject ,Geography, Planning and Development ,cellar door ,self-organizing maps ,Transportation ,self‐organizing maps ,bagged clustering ,Barossa Valley ,segmentation ,Market segmentation ,Perception ,0502 economics and business ,Segmentation ,Cluster analysis ,Nature and Landscape Conservation ,media_common ,Wine ,05 social sciences ,Advertising ,Winery ,Geography ,Tourism, Leisure and Hospitality Management ,050211 marketing ,050212 sport, leisure & tourism ,Tourism - Abstract
This study examines the relationship between the motivation of wine tourists to visit cellar doors and destination image perception. A survey of tourists resulted in 676 useable questionnaires.Using a novel segmentation method, self‐organizing maps, and bagged clustering, the study identified 5 distinct motivation clusters. These clusters were different on only gender and previous visit to the wine region. Three clusters of destination image were identified using the same segmentation method. Significant relationships were found between the motivation and destination image clusters. Implications for destination marketing and managing the tourist experience at the winery cellar door are discussed. Refereed/Peer-reviewed
- Published
- 2018
- Full Text
- View/download PDF
12. Bagged Clustering and its application to tourism market segmentation.
- Author
-
D’Urso, Pierpaolo, De Giovanni, Livia, Disegna, Marta, and Massari, Riccardo
- Subjects
- *
CLUSTER analysis (Statistics) , *TOURISM marketing , *IMAGE segmentation , *FUZZY systems , *STATISTICAL bootstrapping , *ALGORITHMS , *DEGREES of freedom - Abstract
Aim of the paper is to propose a segmentation technique based on the Bagged Clustering (BC) method. In the partitioning step of the BC method, B bootstrap samples with replacement are generated by drawing from the original sample. The fuzzy C-medoids Clustering (FCMdC) method is run on each bootstrap sample, obtaining (B × C) medoids and the membership degrees of each unit to the different clusters. The second step consists in running a hierarchical clustering algorithm on the (B × C) medoids. The best partition of the medoids is obtained investigating properly the dendrogram. Then each unit is assigned to each cluster based on the membership degrees observed in the partitioning step. The effectiveness of the suggested procedure has been shown analyzing a suggestive tourism segmentation problem. We analyze two sample of tourists, each one attending a different cultural attraction, enlightening differences among clusters in socio-economic characteristics and in the motivational reasons behind visit behavior. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
13. Visitors of two types of museums: A segmentation study
- Author
-
Brida, Juan Gabriel, Disegna, Marta, and Scuderi, Raffaele
- Subjects
- *
MUSEUM visitors , *MARKET segmentation , *CLUSTER analysis (Statistics) , *HIERARCHICAL Bayes model , *AD hoc computer networks , *LEARNING vector quantization , *SURVEYS - Abstract
Abstract: Market segmentation comprises a wide range of measurement tools that are useful for the sake of supporting marketing and promotional policies also in the sector of cultural economics. This paper aims to contribute to the literature on segmenting cultural visitors by using the Bagged Clustering method, as an alternative and effective strategy to conduct cluster analysis when binary variables are used. The technique is a combination of hierarchical and partitioning methods and presents several advantages with respect to more standard techniques, such as k-means and LVQ. For this purpose, two ad hoc surveys were conducted between June and September 2011 in the two principal museums of the two provinces of the Trentino-South Tyrol region (Bolzano and Trento), Northern Italy: the South Tyrol Museum of Archaeology in Bolzano (ÖTZI), hosting the permanent exhibition of the “Iceman” Ötzi, and the Museum of Modern and Contemporaneous Art of Trento and Rovereto (MART). The segmentation analysis was conducted separately for the two kinds of museums in order to find similarities and differences in behaviour patterns and characteristics of visitors. The analysis identified three and two cluster segments respectively for the MART and ÖTZI visitors, where two ÖTZI clusters presented similar characteristics to two out of three MART groups. Conclusions highlight marketing and managerial implications for a better direction of the museums. [Copyright &y& Elsevier]
- Published
- 2013
- Full Text
- View/download PDF
14. Multi-class clustering and prediction in the analysis of microarray data
- Author
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Tsai, Chen-An, Lee, Te-Chang, Ho, I-Ching, Yang, Ueng-Cheng, Chen, Chun-Houh, and Chen, James J.
- Subjects
- *
DNA microarrays , *GENES , *HEREDITY , *NUCLEIC acids - Abstract
Abstract: DNA microarray technology provides tools for studying the expression profiles of a large number of distinct genes simultaneously. This technology has been applied to sample clustering and sample prediction. Because of a large number of genes measured, many of the genes in the original data set are irrelevant to the analysis. Selection of discriminatory genes is critical to the accuracy of clustering and prediction. This paper considers statistical significance testing approach to selecting discriminatory gene sets for multi-class clustering and prediction of experimental samples. A toxicogenomic data set with nine treatments (a control and eight metals, As, Cd, Ni, Cr, Sb, Pb, Cu, and AsV with a total of 55 samples) is used to illustrate a general framework of the approach. Among four selected gene sets, a gene set Ω I formed by the intersection of the F-test and the set of the union of one-versus-all t-tests performs the best in terms of clustering as well as prediction. Hierarchical and two modified partition (k-means) methods all show that the set Ω I is able to group the 55 samples into seven clusters reasonably well, in which the As and AsV samples are considered as one cluster (the same group) as are the Cd and Cu samples. With respect to prediction, the overall accuracy for the gene set Ω I using the nearest neighbors algorithm to predict 55 samples into one of the nine treatments is 85%. [Copyright &y& Elsevier]
- Published
- 2005
- Full Text
- View/download PDF
15. Segmenting visitors of cultural events: The case of Christmas Market
- Author
-
Juan Gabriel Brida, Marta Disegna, and Raffaele Scuderi
- Subjects
Event (computing) ,General Engineering ,Bagged Clustering ,Christmas Market ,Cultural event ,Logit model ,Market segmentation ,Computer Science Applications ,Northern italy ,Artificial Intelligence ,Business ,Marketing ,Cluster analysis ,Tourism - Abstract
Market segmentation in tourism makes use of sets of powerful analytical tools for the sake of planning and managing demand-oriented policies. This paper contributes to this strand of literature by segmenting tourists visiting a cultural event. We utilize the Bagged Clustering method, a combination of traditional partitioning and hierarchical techniques, which is proven to be more effective. An ad hoc survey was conducted in 2011 among the Italian visitors of the Christmas Market in Merano, Northern Italy. A total of 802 questionnaires were collected. In discussing the results, marketing and managerial implications are stressed for both policymakers and local organizers. © 2014 Elsevier Ltd. All rights reserved.
- Published
- 2014
- Full Text
- View/download PDF
16. Bagged Clustering and its application to tourism market segmentation
- Author
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Riccardo Massari, Marta Disegna, Livia De Giovanni, and Pierpaolo D'Urso
- Subjects
Fuzzy clustering ,Single-linkage clustering ,Sample (statistics) ,Fuzzy C-medoids ,computer.software_genre ,Tourism market segmentation ,qualitative data ,fuzzy c-medoids ,tourism market segmentation ,dissimilarity measures for quantitative and qualitative data ,bagged clustering ,normalized weighted shannon entropy ,dissimilarity measures for quantitative and ,Artificial Intelligence ,Bagged Clustering Fuzzy C-medoids Dissimilarity measures for quantitative and qualitative data Tourism market segmentation Normalized weighted Shannon entropy ,Segmentation ,Cluster analysis ,Mathematics ,business.industry ,Dissimilarity measures for quantitative and ,Dendrogram ,Qualitative data ,General Engineering ,Pattern recognition ,Medoid ,Computer Science Applications ,Hierarchical clustering ,Bagged Clustering ,Normalized weighted Shannon entropy ,Artificial intelligence ,Data mining ,business ,computer - Abstract
Aim of the paper is to propose a segmentation technique based on the Bagged Clustering (BC) method. In the partitioning step of the BC method, B bootstrap samples with replacement are generated by drawing from the original sample.The fuzzy C-medoids Clustering (FCMdC) method is run on each bootstrap sam- ple, obtaining (B × C) medoids and the membership degrees of each unit to the different clusters.The sec- ond step consists in running a hierarchical clustering algorithm on the (B × C) medoids. The best partition of the medoids is obtained investigating properly the dendrogram.Then each unit is assigned to each cluster based on the membership degrees observed in the partitioning step.The effectiveness of the sug- gested procedure has been shown analyzing a suggestive tourism segmentation problem. Weanalyze two sample of tourists, each one attending adifferent cultural attraction, enlightening differences among clusters in socio-economic characteristics and in the motivational reasons behind visit behavior. © 2013 Elsevier Ltd. All rights reserved.
- Published
- 2013
- Full Text
- View/download PDF
17. Visitors of two types of museums: A segmentation study
- Author
-
Marta Disegna, Raffaele Scuderi, and Juan Gabriel Brida
- Subjects
Motivation ,Bagged Clustering ,Logit models ,Museum ,Segmentation ,business.industry ,General Engineering ,Data science ,South tyrol ,Computer Science Applications ,Cultural economics ,Northern italy ,Exhibition ,Geography ,Market segmentation ,Artificial Intelligence ,Artificial intelligence ,Cluster analysis ,business - Abstract
Highlights? Bagged Clustering method is an alternative and effective method to clustering. ? The clustering method adopted is suitable when binary data are used. ? An ad hoc survey collected binary data on motivations in visiting two museums. ? Visitors of two types of museums are clustered with respect to the their motivations. Market segmentation comprises a wide range of measurement tools that are useful for the sake of supporting marketing and promotional policies also in the sector of cultural economics. This paper aims to contribute to the literature on segmenting cultural visitors by using the Bagged Clustering method, as an alternative and effective strategy to conduct cluster analysis when binary variables are used. The technique is a combination of hierarchical and partitioning methods and presents several advantages with respect to more standard techniques, such as k-means and LVQ. For this purpose, two ad hoc surveys were conducted between June and September 2011 in the two principal museums of the two provinces of the Trentino-South Tyrol region (Bolzano and Trento), Northern Italy: the South Tyrol Museum of Archaeology in Bolzano (OTZI), hosting the permanent exhibition of the "Iceman" Otzi, and the Museum of Modern and Contemporaneous Art of Trento and Rovereto (MART). The segmentation analysis was conducted separately for the two kinds of museums in order to find similarities and differences in behaviour patterns and characteristics of visitors. The analysis identified three and two cluster segments respectively for the MART and OTZI visitors, where two OTZI clusters presented similar characteristics to two out of three MART groups. Conclusions highlight marketing and managerial implications for a better direction of the museums.
- Published
- 2013
- Full Text
- View/download PDF
18. Segmenting markets by bagged clustering: Young Chinese travelers to Western Europe
- Author
-
Girish Prayag, Scott A. Cohen, H. L. Yan, and Marta Disegna
- Subjects
Human migration ,business.industry ,Service provision ,segmentation ,Geography, Planning and Development ,Western Europe ,Transportation ,Advertising ,Sample (statistics) ,Chinese travelers ,push–pull factors ,Market segmentation ,bagged clustering ,Tourism, Leisure and Hospitality Management ,Western europe ,Business ,Marketing ,Cluster analysis ,human activities ,Tourism ,health care economics and organizations - Abstract
Market segmentation is ubiquitous in marketing. Hierarchical and non-hierarchical methods are the most popular for segmenting tourism markets. These methods are not without much controversy. In this study, we use bagged clustering on the push and pull factors of Western Europe to segment potential young Chinese travelers. Bagged clustering overcomes some of the limitations of hierarchical and non-hierarchical methods. A sample of 403 travelers revealed the existence of four clusters of potential visitors. The clusters were subsequently profiled on socio-demographics and travel characteristics. The findings suggest a nascent young Chinese independent travel segment that cannot be distinguished on push factors but can be differentiated on their perceptions of the current independent travel infrastructure in Western Europe. Managerial implications are offered on marketing and service provision to the young Chinese outbound travel market.
- Published
- 2015
19. Bagged fuzzy clustering for fuzzy data: An application to a tourism market
- Author
-
Girish Prayag, Riccardo Massari, Pierpaolo D'Urso, and Marta Disegna
- Subjects
Chinese consumers ,Fuzzy data ,Information Systems and Management ,Fuzzy clustering ,Bagged clustering ,business.industry ,Computer science ,Stability (learning theory) ,Fuzzy C-means ,Likert-type scales ,Sample (statistics) ,computer.software_genre ,Machine learning ,Fuzzy logic ,Management Information Systems ,Artificial Intelligence ,scienze statistiche ,Data mining ,Artificial intelligence ,Cluster analysis ,business ,computer ,Software ,Tourism - Abstract
Segmentation has several strategic and tactical implications in marketing products and services. Despite hard clustering methods having several weaknesses, they remain widely applied in marketing studies. Alternative segmentation methods such as fuzzy methods are rarely used to understand consumer behaviour. In this study, we propose a strategy of analysis, by combining the Bagged Clustering (BC) method and the fuzzy C-means clustering method for fuzzy data (FCM-FD), i.e., the Bagged fuzzy C-means clustering method for fuzzy data (BFCM-FD). The method inherits the advantages of stability and reproducibility from BC and the flexibility from FCM-FD. The method is applied on a sample of 328 Chinese consumers revealing the existence of four segments (Admirers, Enthusiasts, Moderates, and Apathetics) of the perceived images of Western Europe as a tourist destination. The results highlight the heterogeneity in Chinese consumers’ place preferences and implications for place marketing are offered.
- Published
- 2014
20. Segmenting Markets by Bagged Clustering
- Author
-
Dolnicar, Sara, Leisch, Friedrich, Dolnicar, Sara, and Leisch, Friedrich
- Abstract
We introduce bagged clustering as a new approach in the field of post hoc market segmentation research and illustrate the managerial advantages over both hierarchical and partitioning algorithms, especially with large binary data sets. The most important improvements are enhanced stability and interpretability of segments based on binary data. One of the main goals of the procedure is to complement more traditional techniques as an exploratory segment analysis tool. The merits of the approach are illustrated using a tourism marketing application.
- Published
- 2004
21. Winter tourist segments in Austria - Identifying stable vacation styles using bagged clustering techniques
- Author
-
Dolnicar, Sara, Leisch, Friedrich, Dolnicar, Sara, and Leisch, Friedrich
- Abstract
Market segmentation is a very popular and broadly accepted way of increasing profitability. The number of reports published on a posteriori market segmentation studies has rapidly increased since Russel Haley’s milestone publication on benefit segmentation in 1968. Nevertheless, it is common practice in market segmentation to use a single segmentation base only, thus choosing the main dimensions of interest a priori, and to run a single calculation of a single algorithm, which dramatically increases the chance of building an entire marketing plan on a random solution of the algorithm chosen. The application presented constructs winter vacation styles on the basis of Austrian Guest Survey data, avoiding both weaknesses mentioned before. Through the replicative framework provided by bagged clustering, potentially suboptimal random solutions are avoided. Independent partitioning of vacation activities and travel motives leads to more holistic market segments. By looking for over- and under-representation of all combinations of the behavioral and psychographic segmentation, vacation styles are identified and studied in detail.
- Published
- 2003
22. Behavioral Market Segmentation of Binary Guest Survey Data with Bagged Clustering
- Author
-
Dolnicar, Sara, Leisch, Friedrich, Dolnicar, Sara, and Leisch, Friedrich
- Abstract
Binary survey data from the Austrian National Guest Survey conducted in the summer season of 1997 were used to identify behavioural market segments on the basis of vacation activity information. Bagged clustering overcomes a number of diffculties typically encountered when partitioning large binary data sets: The partitions have greater structural stability over repetitions of the algorithm and the question of the "correct" number of clusters is less important because of the hierarchical step of the cluster analysis. Finally, the bootstrap part of the algorithm provides means for assessing and visualizing segment stability for each input variable.
- Published
- 2000
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