• Title/Summary/Keyword: Memory/Learning

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Performance Analysis and Identifying Characteristics of Processing-in-Memory System with Polyhedral Benchmark Suite (프로세싱 인 메모리 시스템에서의 PolyBench 구동에 대한 동작 성능 및 특성 분석과 고찰)

  • Jeonggeun Kim
    • Journal of the Semiconductor & Display Technology
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    • v.22 no.3
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    • pp.142-148
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    • 2023
  • In this paper, we identify performance issues in executing compute kernels from PolyBench, which includes compute kernels that are the core computational units of various data-intensive workloads, such as deep learning and data-intensive applications, on Processing-in-Memory (PIM) devices. Therefore, using our in-house simulator, we measured and compared the various performance metrics of workloads based on traditional out-of-order and in-order processors with Processing-in-Memory-based systems. As a result, the PIM-based system improves performance compared to other computing models due to the short-term data reuse characteristic of computational kernels from PolyBench. However, some kernels perform poorly in PIM-based systems without a multi-layer cache hierarchy due to some kernel's long-term data reuse characteristics. Hence, our evaluation and analysis results suggest that further research should consider dynamic and workload pattern adaptive approaches to overcome performance degradation from computational kernels with long-term data reuse characteristics and hidden data locality.

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The Effects of Conflict Resolution Strategies on Relationship Learning and Performance (갈등해결전략이 관계학습과 성과에 미치는 영향)

  • Noh, Won-Hee;Song, Young-Wook
    • Journal of Distribution Research
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    • v.17 no.3
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    • pp.93-113
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    • 2012
  • Early conflict research in channel and organization area have focused on the definition of conflict construct, its cause, consequence and identified conflict resolution management. Recent studies about conflict, however, have explored new assumption of complexity, a multidimensional conflict construct, contextual conflict management strategies, positive and negative conflict/consequence, and the conflict resolution strategy. Although many literatures exists on channel conflict resolution, little research has been done about relationship learning and performance from conflict resolution perspective. This study explores how channel members can achieve a relationship learning, as a conflict resolution mechanism, which enhance co-created value in marketing channel relationship. Therefore we propose that conflict resolution strategies(collaborating behavior and avoiding behavior) influence channel performance(effectiveness and efficiency) through relationship learning processes(learning via information exchange, joint interpretation and coordination, relationship-specific knowledge memory), in view of buyer-seller relationship. The research model is shown at

    . A total of twelve hypotheses were established through prior studies dealing with conflict and relationship marketing theory. Then we drove conceptual research model. For the purpose of empirical testing, we managed to obtain the list of suppliers of 24 retailers from 5 retailer formats, such as department store, discount store, convenience store, TV home-shopping and internet shopping mall. They were asked to respond to the survey via face-to-face interview conducted by a professional research company. During the one month period of June 2009, we were able to collect data form 490 suppliers. The respondent were restricted to direct dealing authorities and manager with at least three months of dealing experience with retailers. Structural equation modeling on the basis of the results of survey were done to analyze. As a result, eight among twelve hypotheses were supported. The analysis result indicated that collaborating behavior had positive effect on three forms of relationship learning, but avoiding behavior has negative effect on only information exchange. Joint interpretation and coordination, relationship-specific knowledge memory had positive effect on relationship performances, but information exchange had no effect on performances. The results support our basic thesis that the use of conflict resolution strategies have different effect on developing relationship learning, which leads to channel performances. In particular, collaborating behavior is positively related to relationship learning, and avoidance behavior is negatively related to information exchange. Relationship learning is partially contributed to channel performance.

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Memory Enhancing and Antioxidant Properties of Fermented Chongmyung-tang

  • Nam, Jung-Il;Park, Yeun-Woo;Jeon, Hoon
    • Natural Product Sciences
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    • v.16 no.2
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    • pp.93-98
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    • 2010
  • The Chongmyung-tang (CMT) has been used as an oriental herbal medicine for the purpose of enhanced learning and memory. Recently, since fermentation may give a positive effect on pharmacological actions of herbal medicine, many studies are focused to find fermented medicinal herbs with improved bioactivity. In the present study, memory enhancing, antioxidant and reducing power activity of CMT and fermented CMT with Aspergillus oryzae (FCMT-A) or Saccharomyces cerevisiae (FCMT-S) were determined. To evaluate the memory enhancing activities of CMT, FCMT-A and FCMT-S, we performed passive avoidance test using scopolamine induced amnesia model. Administration of CMT, FCMT-A and FCMT-S showed a significant memory enhancing effect about 72.5, 78.3, 71.8% of the normal group respectively. CMT, FCMT-A and FCMT-S also exhibited strong $DPPH{\bullet}$, ${\bullet}{O_2}^-$, $NO^{\codt}$, $ABTS^{{\cdot}+}$ scavenging activities and reducing ower. It was also found that fermented CMT has slightly higher scavenging activities on $DPPH{\bullet}$, $ABTS^{{\cdot}+}$ radicals compared to CMT. These results revealed that CMT, FCMT-A and FCMT-S had memory enhancing and radical scavenging activities. In addition, the fermentation of CMT was more or less important for elevated memory enhancing and antioxidant activities of CMT.

Study on the Model Development for Experiential Learning with Ubiquitous Everyday English (유비쿼터스 생활영어 체험학습장 교수-학습 모형 개발 연구)

  • Baek, Hyeon-Gi;Kim, Su-Min;Kang, Jung-Hwa
    • Journal of Digital Convergence
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    • v.7 no.3
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    • pp.49-60
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    • 2009
  • The aim of this study was to develop a model for teaching-teaming by applying Ubiquitous at a learning experience field, in which connect characteristics of both ubiquitous application learning and experience teaming, making use of them. A literature survey of concepts was conducted, with the main areas to find out relationships between ubiquitous application learning and experience learning. Experience learning by applying ubiquitous learning methods maximizes its efficiency of experience learning in considering ubiquitous learning methods's characteristics of dynamic, interaction, sharing. Also it makes communications through positive participation and active interaction, and leads to a process of internal examination. The research data suggests that critical factors of experiencing learning applying ubiquitous are acquiring information and memory, information integration and exquisiteness, emotional and social activity, producing activity, help activity.

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A New Memory-based Learning using Dynamic Partition Averaging (동적 분할 평균을 이용한 새로운 메모리 기반 학습기법)

  • Yih, Hyeong-Il
    • Journal of the Korean Institute of Intelligent Systems
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    • v.18 no.4
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    • pp.456-462
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    • 2008
  • The classification is that a new data is classified into one of given classes and is one of the most generally used data mining techniques. Memory-Based Reasoning (MBR) is a reasoning method for classification problem. MBR simply keeps many patterns which are represented by original vector form of features in memory without rules for reasoning, and uses a distance function to classify a test pattern. If training patterns grows in MBR, as well as size of memory great the calculation amount for reasoning much have. NGE, FPA, and RPA methods are well-known MBR algorithms, which are proven to show satisfactory performance, but those have serious problems for memory usage and lengthy computation. In this paper, we propose DPA (Dynamic Partition Averaging) algorithm. it chooses partition points by calculating GINI-Index in the entire pattern space, and partitions the entire pattern space dynamically. If classes that are included to a partition are unique, it generates a representative pattern from partition, unless partitions relevant partitions repeatedly by same method. The proposed method has been successfully shown to exhibit comparable performance to k-NN with a lot less number of patterns and better result than EACH system which implements the NGE theory and FPA, and RPA.

Extending Caffe for Machine Learning of Large Neural Networks Distributed on GPUs (대규모 신경회로망 분산 GPU 기계 학습을 위한 Caffe 확장)

  • Oh, Jong-soo;Lee, Dongho
    • KIPS Transactions on Computer and Communication Systems
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    • v.7 no.4
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    • pp.99-102
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    • 2018
  • Caffe is a neural net learning software which is widely used in academic researches. The GPU memory capacity is one of the most important aspects of designing neural net architectures. For example, many object detection systems require to use less than 12GB to fit a single GPU. In this paper, we extended Caffe to allow to use more than 12GB GPU memory. To verify the effectiveness of the extended software, we executed some training experiments to determine the learning efficiency of the object detection neural net software using a PC with three GPUs.