69 research outputs found
Reordering Hierarchical Tree Based on Bilateral Symmetric Distance
BACKGROUND: In microarray data analysis, hierarchical clustering (HC) is often used to group samples or genes according to their gene expression profiles to study their associations. In a typical HC, nested clustering structures can be quickly identified in a tree. The relationship between objects is lost, however, because clusters rather than individual objects are compared. This results in a tree that is hard to interpret. METHODOLOGY/PRINCIPAL FINDINGS: This study proposes an ordering method, HC-SYM, which minimizes bilateral symmetric distance of two adjacent clusters in a tree so that similar objects in the clusters are located in the cluster boundaries. The performance of HC-SYM was evaluated by both supervised and unsupervised approaches and compared favourably with other ordering methods. CONCLUSIONS/SIGNIFICANCE: The intuitive relationship between objects and flexibility of the HC-SYM method can be very helpful in the exploratory analysis of not only microarray data but also similar high-dimensional data
Matrix Reordering Methods for Table and Network Visualization
International audienceThis survey provides a description of algorithms to reorder visual matrices of tabular data and adjacency matrix of networks. The goal of this survey is to provide a comprehensive list of reordering algorithms published in different fields such as statistics, bioinformatics, or graph theory. While several of these algorithms are described in publications and others are available in software libraries and programs, there is little awareness of what is done across all fields. Our survey aims at describing these reordering algorithms in a unified manner to enable a wide audience to understand their differences and subtleties. We organize this corpus in a consistent manner, independently of the application or research field. We also provide practical guidance on how to select appropriate algorithms depending on the structure and size of the matrix to reorder, and point to implementations when available
Simply food : nethnographic & anthropological analysis of policy and structure of local food networks in Sweden
I det hĂ€r examensarbetet undersöks policy och nĂ€tverksstruktur för REKO-konceptet â ett sĂ€tt för smĂ„ livsmedelsproducenter att genom Facebook samordna försĂ€ljning direkt till slutkonsumenter. Uppsatsen diskuterar REKO som ett samtidsfenomen pĂ„verkat av stora trender som den digitala omvandlingen av samhĂ€llet och en allt lĂ€ngre livsmedelskedja. Den beskriver och diskuterar hur policy skapas och sprids i ett platt nĂ€tverk utan formell beslutsfattning. Analysen av policyn visar vidare att âenkelhetâ Ă€r en fokalpunkt i nĂ€tverket, vilket Ă€r laddat med olika vĂ€rde beroende pĂ„ stĂ€llning i nĂ€tverket. Arbetets netnografiska underlösning beskriver och analyserar nĂ€tverksstrukturen ur olika aktörsperspektiv â vilket visar att dĂ„ REKO syftar till att uppnĂ„ olika mĂ„l för dess aktörer kan det gestaltas annorlunda beroende pĂ„ aktörsperspektiv. Arbetet sĂ€tter Ă€ven fenomenet REKO i en allmĂ€n teknokulturell kontext dĂ€r internet och dess sociala medier fĂ„r en allt större betydelse för mĂ€nniskan.This bachelor level thesis examines policy and network structure for the Swedish food distribution network called REKO. A network which matches local producers with consumers through Facebook. The thesis discusses REKO as a cotemporally example of technoculture under influence of trends such as the digital transformation of social life and longer distances between producer and end consumer. The thesis also describes and discuss how policy is made and recreated in a flat network without legal bodies. The policy analysis shows how âsimplicityâ is a focal point loaded with different meanings and goals. In the nethnographic part of the study describes the shifting shape of the network. Lastly the thesis puts REKO in a general technocultural context where internet and social media still gets a bigger role for humanity
Simply food : nethnographic & anthropological analysis of policy and structure of local food networks in Sweden
I det hĂ€r examensarbetet undersöks policy och nĂ€tverksstruktur för REKO-konceptet â ett sĂ€tt för smĂ„ livsmedelsproducenter att genom Facebook samordna försĂ€ljning direkt till slutkonsumenter. Uppsatsen diskuterar REKO som ett samtidsfenomen pĂ„verkat av stora trender som den digitala omvandlingen av samhĂ€llet och en allt lĂ€ngre livsmedelskedja. Den beskriver och diskuterar hur policy skapas och sprids i ett platt nĂ€tverk utan formell beslutsfattning. Analysen av policyn visar vidare att âenkelhetâ Ă€r en fokalpunkt i nĂ€tverket, vilket Ă€r laddat med olika vĂ€rde beroende pĂ„ stĂ€llning i nĂ€tverket. Arbetets netnografiska underlösning beskriver och analyserar nĂ€tverksstrukturen ur olika aktörsperspektiv â vilket visar att dĂ„ REKO syftar till att uppnĂ„ olika mĂ„l för dess aktörer kan det gestaltas annorlunda beroende pĂ„ aktörsperspektiv. Arbetet sĂ€tter Ă€ven fenomenet REKO i en allmĂ€n teknokulturell kontext dĂ€r internet och dess sociala medier fĂ„r en allt större betydelse för mĂ€nniskan.This bachelor level thesis examines policy and network structure for the Swedish food distribution network called REKO. A network which matches local producers with consumers through Facebook. The thesis discusses REKO as a cotemporally example of technoculture under influence of trends such as the digital transformation of social life and longer distances between producer and end consumer. The thesis also describes and discuss how policy is made and recreated in a flat network without legal bodies. The policy analysis shows how âsimplicityâ is a focal point loaded with different meanings and goals. In the nethnographic part of the study describes the shifting shape of the network. Lastly the thesis puts REKO in a general technocultural context where internet and social media still gets a bigger role for humanity
Simply food : nethnographic & anthropological analysis of policy and structure of local food networks in Sweden
I det hĂ€r examensarbetet undersöks policy och nĂ€tverksstruktur för REKO-konceptet â ett sĂ€tt för smĂ„ livsmedelsproducenter att genom Facebook samordna försĂ€ljning direkt till slutkonsumenter. Uppsatsen diskuterar REKO som ett samtidsfenomen pĂ„verkat av stora trender som den digitala omvandlingen av samhĂ€llet och en allt lĂ€ngre livsmedelskedja. Den beskriver och diskuterar hur policy skapas och sprids i ett platt nĂ€tverk utan formell beslutsfattning. Analysen av policyn visar vidare att âenkelhetâ Ă€r en fokalpunkt i nĂ€tverket, vilket Ă€r laddat med olika vĂ€rde beroende pĂ„ stĂ€llning i nĂ€tverket. Arbetets netnografiska underlösning beskriver och analyserar nĂ€tverksstrukturen ur olika aktörsperspektiv â vilket visar att dĂ„ REKO syftar till att uppnĂ„ olika mĂ„l för dess aktörer kan det gestaltas annorlunda beroende pĂ„ aktörsperspektiv. Arbetet sĂ€tter Ă€ven fenomenet REKO i en allmĂ€n teknokulturell kontext dĂ€r internet och dess sociala medier fĂ„r en allt större betydelse för mĂ€nniskan.This bachelor level thesis examines policy and network structure for the Swedish food distribution network called REKO. A network which matches local producers with consumers through Facebook. The thesis discusses REKO as a cotemporally example of technoculture under influence of trends such as the digital transformation of social life and longer distances between producer and end consumer. The thesis also describes and discuss how policy is made and recreated in a flat network without legal bodies. The policy analysis shows how âsimplicityâ is a focal point loaded with different meanings and goals. In the nethnographic part of the study describes the shifting shape of the network. Lastly the thesis puts REKO in a general technocultural context where internet and social media still gets a bigger role for humanity
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