Extracting Unknown Repeated Pattern in Tiled Images

Data on the rainfall is compelling to study as it becomes one of the major factors affecting the weather in a certain region and various aspects of life as well. Generally, predicting rainfall is performed by analyzing data in the past in certain methods. Rainfall is prone to follow repeated pattern in sequence of time. The utilization of big data mining is expected to result in any valuable information that used to be unrevealed in the big data store. Some methods used in data mining are Apriori Algorithm and Improved Apriori Algorithm. Improved Apriori itself is to represent the database in the form of matrix to describe its relation in the database. Data used in this research is the rainfall factor in 2016 in Tanjungpinang city. Based on the test of Improved Apriori Algorithm, it was found out that the relation of the rainfall and weather factors utilizing 2 item sets, that is, if the temperature is low (24,0 - 26,0), the humidity is high (85 - 100), then the rainfall is mild. If the temperature is low (24,0 - 26,0), the light intensity is low (0 – 3), then the rainfall is heavy, and 3 item sets if the temperature is low (24,0 - 26,0), the humidity is high (85 - 100), the sun light intensity is low (0-3), then the rainfall is medium.

Download Full-text

A Framework for Automated Scraping of Structured Data Records From the Deep Web Using Semantic Labeling

International Journal of Information Retrieval Research ◽

10.4018/ijirr.290830 ◽

2022 ◽

Vol 12 (1) ◽

pp. 1-18

Author(s):

Umamageswari Kumaresan ◽

Kalpana Ramanujam

Keyword(s):

Web Sites ◽

Syntactic Structure ◽

Structured Data ◽

Web Pages ◽

Semantic Labeling ◽

Repeated Pattern ◽

Computationally Intensive ◽

To Come ◽

String Pattern ◽

Informative Content

The intent of this research is to come up with an automated web scraping system which is capable of extracting structured data records embedded in semi-structured web pages. Most of the automated extraction techniques in the literature captures repeated pattern among a set of similarly structured web pages, thereby deducing the template used for the generation of those web pages and then data records extraction is done. All of these techniques exploit computationally intensive operations such as string pattern matching or DOM tree matching and then perform manual labeling of extracted data records. The technique discussed in this paper departs from the state-of-the-art approaches by determining informative sections in the web page through repetition of informative content rather than syntactic structure. From the experiments, it is clear that the system has identified data rich region with 100% precision for web sites belonging to different domains. The experiments conducted on the real world web sites prove the effectiveness and versatility of the proposed approach.

Download Full-text

ladybird, a new component of the cardiogenic pathway in Drosophila required for diversification of heart precursors

Development ◽

10.1242/dev.124.18.3471 ◽

1997 ◽

Vol 124 (18) ◽

pp. 3471-3479 ◽

Cited By ~ 10

Author(s):

K. Jagla ◽

M. Frasch ◽

T. Jagla ◽

G. Dretzen ◽

F. Bellard ◽

...

Keyword(s):

Late Phase ◽

Heart Cell ◽

Heart Cells ◽

Neurogenic Genes ◽

Pericardial Cells ◽

Wingless Signaling ◽

Heart Formation ◽

Repeated Pattern ◽

Pericardial Cell

The embryonic heart precursors of Drosophila are arranged in a repeated pattern of segmental units. There is growing evidence that the development of individual elements of this pattern depends on both mesoderm intrinsic patterning information and inductive signals from the ectoderm. In this study, we demonstrate that two homeobox genes, ladybird early and ladybird late, are involved in the cardiogenic pathway in Drosophila. Their expression is specific to a subset of cardioblast and pericardial cell precursors and is critically dependent on mesodermal tinman function, epidermal Wingless signaling and the coordinate action of neurogenic genes. Negative regulation by hedgehog is required to restrict ladybird expression to two out of six cardioblasts in each hemisegment. Overexpression of ladybird causes a hyperplasia of heart precursors and alters the identity of even-skipped-positive pericardial cells. Loss of ladybird function leads to the opposite transformation, suggesting that ladybird participates in the determination of heart lineages and is required to specify the identities of subpopulations of heart cells. We find that both early Wingless signaling and ladybird-dependent late Wingless signaling are required for proper heart formation. Thus, we propose that ladybird plays a dual role in cardiogenesis: (i) during the early phase, it is involved in specification of a segmental subset of heart precursors as a component of the cardiogenic tinman-cascade and (ii) during the late phase, it is needed for maintaining wingless activity and thereby sustaining the heart pattern process. These events result in a diversification of heart cell identities within each segment.

Download Full-text

Music snippet extraction via melody-based repeated pattern discovery

Science in China Series F Information Sciences ◽

10.1007/s11432-009-0092-y ◽

2009 ◽

Vol 52 (5) ◽

pp. 804-812 ◽

Cited By ~ 2

Author(s):

JiePing Xu ◽

Yang Zhao ◽

Zhe Chen ◽

ZiLi Liu

Keyword(s):

Pattern Discovery ◽

Repeated Pattern

Download Full-text

Identifying ecological barriers to restoration in temperate grassy woodlands: soil changes associated with different degradation states

Australian Journal of Botany ◽

10.1071/bt02052 ◽

2002 ◽

Vol 50 (6) ◽

pp. 699 ◽

Cited By ~ 95

Author(s):

Suzanne M. Prober ◽

Kevin R. Thiele ◽

Ian D. Lunt

Keyword(s):

Chemical Properties ◽

Soil Conditions ◽

Reference Sites ◽

Ecosystem Recovery ◽

Positive Feedbacks ◽

Ecological Barriers ◽

Eastern Australia ◽

Repeated Pattern ◽

Agricultural Regions ◽

Selection Of

Temperate grassy woodlands were once the dominant vegetation across many agricultural regions of south-eastern Australia, but most of these are now highly degraded and fragmented. Adequate conservation of these woodlands is dependent on successful ecological restoration; however, ecological barriers often limit ecosystem recovery once degrading processes are removed. To help identify these barriers, we used a state and transition framework to compare topsoils of little-disturbed (reference) and variously degraded remnants of grassy Eucalyptus albens Benth. and E. melliodora Cunn. ex Schauer woodlands. Topsoils of degraded remnants showed a repeated pattern, with the most compacted, most acidic and most depleted topsoils occurring in remnants dominated by Aristida ramosa R.Br. or Austrodanthonia H.P.Linder and Austrostipa scabra (Lindl.) S.W.L.Jacobs & J.Everett; the least compacted and most nutrient rich topsoils in remnants dominated by annual exotics; and generally intermediate topsoils in remnants dominated by Bothriochloa macra (Steud.) S.T.Blake or Austrostipa bigeniculata (Hughes) S.W.L.Jacobs & J.Everett. Surprisingly, topsoils beneath trees in reference sites (supporting Poa sieberiana Spreng.) were similar to topsoils supporting annual exotics for most soil properties. Chemical properties of topsoils from open areas of reference sites [supporting Themeda australis (R.Br.) Stapf] were usually intermediate and similar to Bothriochloa macra and Austrostipa bigeniculata topsoils. The most striking exception to these trends was for soil nitrate, which was extremely low in all reference topsoils and showed a high correlation with annual exotic abundance. We discuss the potential for positive feedbacks between soil nitrogen cycling and understorey composition and the need for intervention to assist possible nitrate-dependent transitions between annual and perennial understorey states. Dominant grasses, trees and annual weed abundance may be useful indicators of soil conditions and could inform selection of target sites, species and techniques for restoration projects.

Download Full-text

Spatial Repeatability of Dynamic Tyre Forces Generated by Heavy Vehicles

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1243/pime_proc_1992_206_157_02 ◽

1992 ◽

Vol 206 (1) ◽

pp. 17-27 ◽

Cited By ~ 30

Author(s):

D J Cole ◽

D Cebon

Keyword(s):

Spatial Distribution ◽

Weight Class ◽

Heavy Vehicles ◽

Vehicle Simulation ◽

The Road ◽

Class A ◽

Reference Vehicle ◽

Articulated Vehicles ◽

Repeated Pattern ◽

Vehicle Fleet

Road damage due to heavy vehicles is thought to be dependent on the extent to which lorries in normal traffic apply peak forces to the same locations along the road. A validated vehicle simulation is used to simulate 37 leaf-sprung articulated vehicles with parametric variations typical of vehicles in one weight class in the highway vehicle fleet. The spatial distribution of tyre forces generated by each vehicle is compared with the distribution generated by a reference vehicle, and the conditions are established for which repeated heavy loading occurs at specific points along the road. It is estimated that approximately two-thirds of vehicles in this class (a large proportion of all heavy vehicles) may contribute to a repeated pattern of road loading. It is concluded that dynamic tyre forces are a significant factor influencing road damage, compared to other factors such as tyre configuration and axle spacing.

Download Full-text

An algorithm to find the largest adjacent repeated pattern based on Suffix Tree

2012 2nd International Conference on Consumer Electronics, Communications and Networks (CECNet) ◽

10.1109/cecnet.2012.6201906 ◽

2012 ◽

Author(s):

Xu Yuan-Chun ◽

Tian Yuan ◽

Zhang Yi-Lai ◽

Guo De-Xian

Keyword(s):

Suffix Tree ◽

Repeated Pattern

Download Full-text

Natural selection and repeated patterns of molecular evolution following allopatric divergence

eLife ◽

10.7554/elife.45199 ◽

2019 ◽

Vol 8 ◽

Cited By ~ 6

Author(s):

Yibo Dong ◽

Shichao Chen ◽

Shifeng Cheng ◽

Wenbin Zhou ◽

Qing Ma ◽

...

Keyword(s):

Positive Selection ◽

Divergence Time ◽

Purifying Selection ◽

Single Copy ◽

Orthologous Genes ◽

Allopatric Species ◽

Genome Wide ◽

Allopatric Divergence ◽

Selective Forces ◽

Repeated Pattern

Although geographic isolation is a leading driver of speciation, the tempo and pattern of divergence at the genomic level remain unclear. We examine genome-wide divergence of putatively single-copy orthologous genes (POGs) in 20 allopatric species/variety pairs from diverse angiosperm clades, with 16 pairs reflecting the classic eastern Asia-eastern North America floristic disjunction. In each pair, >90% of POGs are under purifying selection, and <10% are under positive selection. A set of POGs are under strong positive selection, 14 of which are shared by 10–15 pairs, and one shared by all pairs; 15 POGs are annotated to biological processes responding to various stimuli. The relative abundance of POGs under different selective forces exhibits a repeated pattern among pairs despite an ~10 million-year difference in divergence time. Species divergence times are positively correlated with abundance of POGs under moderate purifying selection, but negatively correlated with abundance of POGs under strong purifying selection.

Download Full-text