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Rainbow: A distributed and hierarchical RDF triple store with dynamic scalability

Rong Gu, Wei Hu, Yihua Huang
2014 2014 IEEE International Conference on Big Data (Big Data)  
Further, to better support the hybrid indexing scheme, Rainbow adopts a distributed and hierarchical storage architecture that uses HBase as the scalable persistent storage and combines a distributed memory  ...  storage to speedup query performance.  ...  For those triple patterns having same variables, we adopt an optimization rule with statistics [7] . In Rainbow, a metadata table resides in the client's memory.  ... 
doi:10.1109/bigdata.2014.7004274 dblp:conf/bigdataconf/GuHH14 fatcat:mxi5hq657vfrpn6gbyr6hsunyi

Rainbow

Xin Zhang, Katica Dimitrova, Ling Wang, Maged El Sayed, Brian Murphy, Bradford Pielech, Mukesh Mulchandani, Luping Ding, Elke A. Rundensteiner
2003 Proceedings of the 2003 ACM SIGMOD international conference on on Management of data - SIGMOD '03  
We present multiple XQuery optimization based on materialized XML view technology in the Rainbow system.  ...  In this demo we in particular show: (1) Rainbow's support for defining and incrementally maintaining materialized XQuery views, (2) XQuery optimization by query rewriting to use materialized views, (3)  ...  This is supported by a storage manager which maps storage requests to the appropriate storage medium and provides support for transparent storage and both value-based and reference-based access to intermediate  ... 
doi:10.1145/872757.872861 dblp:conf/sigmod/ZhangDWEMPMDR03 fatcat:6glntmc4g5e6dk6pqazxm6vn4u

Rainbow

Xin Zhang, Katica Dimitrova, Ling Wang, Maged El Sayed, Brian Murphy, Bradford Pielech, Mukesh Mulchandani, Luping Ding, Elke A. Rundensteiner
2003 Proceedings of the 2003 ACM SIGMOD international conference on on Management of data - SIGMOD '03  
We present multiple XQuery optimization based on materialized XML view technology in the Rainbow system.  ...  In this demo we in particular show: (1) Rainbow's support for defining and incrementally maintaining materialized XQuery views, (2) XQuery optimization by query rewriting to use materialized views, (3)  ...  This is supported by a storage manager which maps storage requests to the appropriate storage medium and provides support for transparent storage and both value-based and reference-based access to intermediate  ... 
doi:10.1145/872858.872861 fatcat:ampnfp57rzb4ll4hcc6ctqzfj4

Analysis of the Non-perfect Table Fuzzy Rainbow Tradeoff [chapter]

Byoung-Il Kim, Jin Hong
2013 Lecture Notes in Computer Science  
This work provides an accurate complexity analysis of the non-perfect table version of the fuzzy rainbow tradeoff algorithm, which has not yet received much attention.  ...  Time memory tradeoff algorithms are tools for inverting oneway functions, and they are often used to recover passwords from unsalted password hashes.  ...  The table also states s = 48 to be optimal for the F ps = 99% and log m 0 + ε = 22 situation.  ... 
doi:10.1007/978-3-642-39059-3_24 fatcat:nvzjp2rafbeznhpbttgbdt3c34

Virtual Expansion of Rainbow Tables [chapter]

Vrizlynn Thing
2010 IFIP Advances in Information and Communication Technology  
Experimental results indicate that the improvements are achieved with the same computational complexity and storage requirements as the original rainbow table method.  ...  This paper presents a new method for deterministically generating and efficiently storing password recovery tables.  ...  In the case of the enhanced rainbow table method, optimal performance is achieved when a single block is formed.  ... 
doi:10.1007/978-3-642-15506-2_17 fatcat:tmt2ylyx5jgtpiiuw5mc7wufhu

Comparison of various chemometric analysis for rapid prediction of thiobarbituric acid reactive substances in rainbow trout fillets by hyperspectral imaging technique

Sara Khoshnoudi‐Nia, Marzieh Moosavi‐Nasab
2019 Food Science & Nutrition  
UB-LS-SVM model was the optimal models for predicting TBARS value in rainbow trout fillets ( R P 2 = 0.831; RMSEP = 0.125 mg MDA/kg).  ...  substances (TBARS) value in rainbow trout (Oncorhynchus mykiss) fillets during 12 days of cold storage (4 ± 2°C).  ...  TA B L E 2 Model performance for prediction of TBARS values in rainbow trout fillet during cold storage by hyperspectral imaging method F I G U R E 4 Exhibition of optimal wavebands on second derivative  ... 
doi:10.1002/fsn3.1043 pmid:31139402 pmcid:PMC6526668 fatcat:wu5hcaws2fdg5hsuqvalnxio3q

A New Variant of Time Memory Trade-Off on the Improvement of Thing and Ying's Attack [chapter]

Zhenqi Li, Yao Lu, Wenhao Wang, Bin Zhang, Dongdai Lin
2012 Lecture Notes in Computer Science  
original rainbow attack.  ...  Both theoretical analysis and experimental results show that our new design can save about 53.7% cryptanalysis time compared to TY attack and can reduce about 35.2% storage requirement compared to the  ...  In [11] , Thing et al. said that the optimal value of k is 2m−2, where m is number of chains in rainbow table.  ... 
doi:10.1007/978-3-642-34129-8_28 fatcat:r5lwvqassjhspibxanfool3zlq

Heterogeneous Rainbow Table Widths Provide Faster Cryptanalyses

Gildas Avoine, Xavier Carpent
2017 Proceedings of the 2017 ACM on Asia Conference on Computer and Communications Security - ASIA CCS '17  
We stress that the optimal width of each rainbow table should be individually -although not independently -calculated. So it goes for the memory allocated to each table.  ...  We also stress that visiting sequentially the rainbow tables is no longer optimal when considering tables with heterogeneous widths.  ...  Several improvements on the rainbow tables were published during the last decade, including the checkpoints [4] and the fingerprints [1] , and techniques to optimize the ending points storage [2]  ... 
doi:10.1145/3052973.3053030 dblp:conf/ccs/AvoineC17 fatcat:esihh2cr3vcevjtqfcdhs4zvji

Improvement and Analysis of VDP Method in Time/Memory Tradeoff Applications [chapter]

Wenhao Wang, Dongdai Lin, Zhenqi Li, Tianze Wang
2011 Lecture Notes in Computer Science  
Both the DP method and VDP method can be applied to Hellman tradeoff or rainbow tradeoff.  ...  We find optimal parameter sets of this new method by minimizing the tradeoff coefficient.  ...  It is optimal to build one DP-Rainbow table and sett equals 1.75t. The tradeoff coefficient is expected to be around 8.7968.  ... 
doi:10.1007/978-3-642-25243-3_23 fatcat:j4nsypgrgfgyxmotzpydv22dt4

Comparison of perfect table cryptanalytic tradeoff algorithms

Ga Won Lee, Jin Hong
2015 Designs, Codes and Cryptography  
Keywords time memory tradeoff · distinguished point · rainbow table · perfect table · algorithm complexity Introduction A cryptanalytic time memory tradeoff algorithm is a method for inverting one-way  ...  Comparisons can be based on the expected execution complexities rather than the worst case complexities, and details such as the effects of false alarms and various storage optimization techniques need  ...  Let us summarize the issue of storage optimization for the perfect rainbow tradeoff. Each starting point can be stored in slightly more than log m bits.  ... 
doi:10.1007/s10623-015-0116-0 fatcat:xw6toiwmqve27h6aoqynnduco4

A Comparison of Cryptanalytic Tradeoff Algorithms

Jin Hong, Sunghwan Moon
2012 Journal of Cryptology  
The analysis of tradeoff efficiency presented in this paper does not ignore the effects of false alarms and also covers techniques for reducing storage, such as ending point truncations and index tables  ...  Specifically, the classical tradeoff algorithm by Hellman, the distinguished point tradeoff method, and the rainbow table method, in their non-perfect table versions, are treated.  ...  In particular, a technique for storage optimization called ending point truncation has not yet been fully analyzed.  ... 
doi:10.1007/s00145-012-9128-3 fatcat:63tq6ittvngwti2zjjiu7hvn4i

Optimizing long chain-polyunsaturated fatty acid synthesis in salmonids by balancing dietary inputs

Stefanie M Colombo, Christopher C Parrish, Manju P A Wijekoon
2018 PLoS ONE  
These new results provide a baseline of optimal dietary ratios that can be tested experimentally to determine the efficacy of balancing dietary fatty acids for maximum LC-PUFA storage.  ...  A data synthesis study was conducted to estimate optimal levels of fatty acids that may maximize the production and storage of LC-PUFA in the edible portion of salmonids.  ...  Tissue-to-diet ratios for both ALA and LNA were different between Table 3 .  ... 
doi:10.1371/journal.pone.0205347 pmid:30304012 pmcid:PMC6179257 fatcat:rwx34v4qnvazdoa2kfznlew5dy

Prediction of various freshness indicators in fish fillets by one multispectral imaging system

Sara Khoshnoudi-Nia, Marzieh Moosavi-Nasab
2019 Scientific Reports  
Further studies needed to improve the accuracy and applicability of HSI system for predicting freshness of rainbow-trout fish.  ...  To simplify the calibration models, nine optimal wavelengths were selected by genetic algorithm.  ...  Furthermore, we appreciate the members of Seafood Processing Research Group (Shiraz, Iran) for providing all the facilities and equipments to conduct this research.  ... 
doi:10.1038/s41598-019-51264-z pmid:31605023 pmcid:PMC6789145 fatcat:3liqa2pjsbawbnmhbyy2jmyhfm

Comparison of fatty acid content of fresh and frozen fillets of rainbow trout (Oncorhynchus mykiss) Walbaum

Celia Chávez-Mendoza, José Arturo García-Macías, Alma Delia Alarcón-Rojo, Juan Ángel Ortega-Gutiérrez, Celia Holguín-Licón, Gabriela Corral-Flores
2014 Brazilian Archives of Biology and Technology  
The aim of this study was to evaluate and compare the percentage content of fatty acids (FA) of 54 rainbow trout fresh and frozen fillets. Frozen fillets were stored at -15 o C for 45 and 90 days.  ...  It was concluded that the frozen storage had a negative impact on meat quality of rainbow trout due to the reduction of PUFA, n-3/n-6, polyene index and PUFA/ SFA and the increase of the SFA, and atherogenic  ...  Torres Muñoz professor of Faculty of Chemistry Sciences, Universidad Autonoma de Chihuahua, Chihuahua, Mexico for help with the experimental work.  ... 
doi:10.1590/s1516-89132014000100015 fatcat:2morobigjrck5em3vre22mg37e

Security Analysis of MD5 Algorithm in Password Storage

Mary Cindy Ah Kioon, Zhao Shun Wang, Shubra Deb Das
2013 Applied Mechanics and Materials  
We suggest using key stretching to make the hash calculation slower and using XOR cipher to make the final hash value impossible to find in any standard rainbow table.  ...  This paper analyses the security risks of the hashing algorithm MD5 in password storage and discusses different solutions, such as salts and iterative hashing.  ...  Rainbow Tables Rainbow tables are made up of hash chains and are more efficient than hash tables as they optimize the storage requirements, although the lookup is made slightly slower.  ... 
doi:10.4028/www.scientific.net/amm.347-350.2706 fatcat:lmndxqyzejcxdidxwavdypyyzu
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