Image abstraction for improved semantic retrieval accuracy and reduced space-time complexities

2011 ◽  
Author(s):  
Anas Y. Boubas ◽  
Saad Harous ◽  
Boumediene Belkhouche
Keyword(s):  
Space Time ◽  
Semantic Retrieval ◽  
Retrieval Accuracy ◽  
Image Abstraction ◽  
Reduced Space

The Standardization of Folksonomy Based on Ontology Technology

2013 ◽  
Vol 655-657 ◽  
pp. 1830-1833
Author(s):  
Xin Yuan Wang ◽  
Jin Dong Cui
Keyword(s):  
Natural Language ◽  
Hierarchical Structure ◽  
Recall Rate ◽  
Information Organization ◽  
Semantic Retrieval ◽  
Retrieval Accuracy ◽  
Traditional Classification ◽  
Thematic Approach ◽  
The One

The folksonomy compared with the traditional classification and thematic approach, is a completely spontaneous by the user, which using natural language, uncontrolled information organization, easier to be accepted by public users. But on the one hand, the folksonomy due to the elimination of the strict vocabulary control and hierarchical structure has too many faults, such as fuzzy semantic retrieval accuracy and low recall rate, as well as tag the abuse of information garbage. In this paper, the author uses the ontology to standardize the folksonomy, and try to improve the effect of folksonomy for information organization and retrieval.

scholarly journals Simple-Random-Sampling-Based Multiclass Text Classification Algorithm

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Wuying Liu ◽  
Lin Wang ◽  
Mianzhu Yi
Keyword(s):  
Text Classification ◽  
Random Sampling ◽  
Simple Random Sampling ◽  
Space Time ◽  
Classification Problems ◽  
Data Set ◽  
Web Document ◽  
Document Collection ◽  
Time Requirements ◽  
Reduced Space

Multiclass text classification (MTC) is a challenging issue and the corresponding MTC algorithms can be used in many applications. The space-time overhead of the algorithms must be concerned about the era of big data. Through the investigation of the token frequency distribution in a Chinese web document collection, this paper reexamines the power law and proposes a simple-random-sampling-based MTC (SRSMTC) algorithm. Supported by a token level memory to store labeled documents, the SRSMTC algorithm uses a text retrieval approach to solve text classification problems. The experimental results on the TanCorp data set show that SRSMTC algorithm can achieve the state-of-the-art performance at greatly reduced space-time requirements.

Space, Time and Einstein

2002 ◽  
Author(s):  
J. B. Kennedy
Keyword(s):  
Space Time

Spinors and Space-Time

1984 ◽  
Author(s):  
Roger Penrose ◽  
Wolfgang Rindler
Keyword(s):  
Space Time

Do Writing Directions Influence How People Map Space onto Time?

2018 ◽  
Vol 77 (4) ◽  
pp. 173-184
Author(s):  
Wenxing Yang ◽  
Ying Sun
Keyword(s):  
Mental Representations ◽  
Space Time ◽  
Horizontal Axis ◽  
Causal Role ◽  
Writing Systems ◽  
Temporal Cognition ◽  
Japanese Speakers ◽  
Psychological Experiments ◽  
Vertical Up

Abstract. The causal role of a unidirectional orthography in shaping speakers’ mental representations of time seems to be well established by many psychological experiments. However, the question of whether bidirectional writing systems in some languages can also produce such an impact on temporal cognition remains unresolved. To address this issue, the present study focused on Japanese and Taiwanese, both of which have a similar mix of texts written horizontally from left to right (HLR) and vertically from top to bottom (VTB). Two experiments were performed which recruited Japanese and Taiwanese speakers as participants. Experiment 1 used an explicit temporal arrangement design, and Experiment 2 measured implicit space-time associations in participants along the horizontal (left/right) and the vertical (up/down) axis. Converging evidence gathered from the two experiments demonstrate that neither Japanese speakers nor Taiwanese speakers aligned their vertical representations of time with the VTB writing orientation. Along the horizontal axis, only Japanese speakers encoded elapsing time into a left-to-right linear layout, which was commensurate with the HLR writing direction. Therefore, two distinct writing orientations of a language could not bring about two coexisting mental time lines. Possible theoretical implications underlying the findings are discussed.

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