the background for data mining practice
Báo cáo khoa học: "Veterinary decision making in relation to metritis - a qualitative approach to understand the background for variation and bias in veterinary medical records"
... the data in and of itself as the basis for taking relevant action at the farm They may skip the process of systematic analysis of data and give advice based on their immediate evaluation of the ... and the individual veterinarians' perceptions expressed in their local context Our basis for the model is thus the empirical data and not an initiating general theory or hypothesis From these data ... motivation At the level of the individual cow, the veterinarians seemed to base their treatment decisions on the cow's characteristics They focussed generally on the practical use of the score to...
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Data Preparation for Data Mining- P3
... afflict the data and the data set (and also the miner!) were introduced All of this data, and the data set, enfolds information, which is the reason for mining data in the first place The next ... the data set for mining to best expose the information contained in it to the mining tool Indeed, the whole purpose for mining data is to transform the information content of a data set that ... transforming information The concept of information is crucial to data mining It is the very substance enfolded within a data set for which the data set is being mined It is the reason to prepare the data...
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Data Preparation for Data Mining- P4
... the eight stages: Accessing the data Auditing the data Enhancing and enriching the data Looking for sampling bias Determining data structure Building the PIE Surveying the data Modeling the data ... “raw” form, and the model works only with prepared data, it is necessary to transform the execution data in the same way that the training and test data were transformed That is the job of the ... finding the source for all of the possible data streams, the nature of the data streams has to be characterized, that is, the data that each stream can actually deliver The miner already knows the data...
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Data Preparation for Data Mining- P5
... catching the “hare” in the data is the place to start So what is the “hare” in data? The hare is the information content enfolded into the data set Just as hare is the essence of the recipe for Jugged ... rationale, or theory forms the explanatory structure for the data set It explains how the variables are expected to relate to each other, and how the data set as a whole relates to the problem ... in the original data set The data preparation software creates this variable and captures information about the missing value patterns For each pattern of missing values in the data set, the data...
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Data Preparation for Data Mining- P6
... as the standard deviation of the sample For large numbers of instances, which will usually be dealt with in data mining, the difference is miniscule.) There is another formula for finding the ... representation, let alone the best one They will find the best numerical representation, given the form in which the alpha is delivered for preparation, and the information in the data set However, insights ... only for numerating the alphas, but also for conducting the data survey and for addressing various problems and issues in data mining Becoming comfortable with the concept of data existing in state...
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Data Preparation for Data Mining- P7
... limited, this also limits the “size” of the dimension The range of the variable fixes the range of the dimension Since the limiting values for the variables are known, all of the dimensions can be ... matter of finding the distance between the points on one axis and then on the other axis, and then the diagonal length between the two points is the shortest distance between the two points Figure ... the absolute mean density of the data points depends on the number of data points present and the size of the space The number of dimensions fixes unit state space volume, but the number of data...
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Data Preparation for Data Mining- P8
... Translating the information discovered there into insights about the data, and the objects the data represents, forms an important part of the data survey in addition to its use in data preparation ... is, the one that either reveals the most information, or at least does the least damage to existing information The only time that an alpha variable’s label values come again to the fore is in the ... or other data repository.) During the process of manipulation, as well as exposing information, there is useful insight to be gained about the nature of the variables and the data Some of the...
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Data Preparation for Data Mining- P9
... fill the missing values, causing the least harm to the structure of the data set by placing the missing value in the context of the other values that are present To find the necessary context for ... distortion to the data as it is to make the information that is present available to the mining tool The data itself, considered as individual variables, is fairly well prepared for mining at this ... curve on the left of the graph and the negative curve to the right show this clearly Figure 7.9 For the variable DAS, the distribution appears empty around the middle values The shape of the displacement...
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Tài liệu Data Preparation for Data Mining- P10 docx
... of the waveform Figure 9.8 shows the composite waveform with an increasing trend in the top image The bottom image shows the spectrum for such a trended waveform The power in the trend swamps the ... When producing the spectrum for this waveform, there is a single spike in the spectrum that corresponds to the frequency of the waveform There are no other spikes, and most of the curve shows ... differs from the forms of data so far discussed mainly in the way in which the data enfolds the information The main difference is that the ordering of the data carries information This ordering,...
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Tài liệu Data Preparation for Data Mining- P11 pdf
... exactly the same way, but for EMAs, obviously the heavier the head weight, the “faster” the EMA value will move—that is to say, the more closely it follows the value of the series For comparison, the ... position of the EMA is set to the starting value of the series The formula for determining the present value of the EMA is vEMA0 = (vs0 x wh) + (vEMA – x wt) where vEMA0 is the value of the current ... use the average of that position plus the previous four positions instead of the actual value This simple averaging reduces the variance of the waveform The longer the period of the average, the...
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Tài liệu Data Preparation for Data Mining- P12 pptx
... and the network better estimates the needed function in the training data set, the function improves its fit with the test data too When the function learned in the training data begins to fit the ... limited too Since the neuron has to try to duplicate the input as its output, then the input has to be limited to the range the neuron actually can output The “time” range for the waveform is also ... Changing the bias weight a moves the center of the logistic curve along the x-axis The center of the curve, value 0.5, is positioned at the value of the bias weight The bias displaces the range...
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Tài liệu Data Preparation for Data Mining- P13 pptx
... relationships in, the information content of a data set is a part of the task of the data survey It prepares the path for the mining that follows Some information is always present in the data understandable ... information The data set embeds it The data survey surveys it Data mining translates it But what exactly is information? The Oxford English Dictionary begins its definition with The act of informing, ... far as data preparation for data mining is concerned, the journey ends here However, the data is still unmined The ultimate purpose of preparing data is to gain understanding of what the data “means”...
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Tài liệu Data Preparation for Data Mining- P14 pdf
... complete the survey anyway The miner selects the single input variable that carries most of the information about the output data set Then the miner selects the variable carrying the next most information ... state space with 10 data points The survey looks at the local data affecting the position of the manifold and maps the data distribution around the manifold The survey reports the standard deviation ... determining the confidence that the multivariable variability of a data set is captured, entropic analysis forms the main tool for surveying data The other tools are useful, but used largely for...
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Tài liệu Data Preparation for Data Mining- P15 doc
... 11.32 Information metrics for the unbalanced CREDIT data set on the left, and the balanced CREDIT data set on the right The unbalanced data set has less than 1% buyers, while the balanced data set ... metrics of the data survey report that the information content is almost unchanged for the two data sets, even though the balance of the data is completely different between them In other words, ... card usage The data miners set their tools to mining all the data, extracting both broad and narrow fluctuations The main search criteria for the data miners was to find the “drivers” for particularly...
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Tài liệu Data Preparation for Data Mining- P16 ppt
... architecture for the prepared and unprepared data sets Thus, this uses no knowledge gleaned from the either the data assay or the data survey Much, if not most, of the useful information discovered ... that the network continued to learn noise So much then for training on the “unprepared” data set The story shown for the prepared data set in Figure 12.9 is very different! Notice that the Please ... comparing the performance of the two data sets is that the training set error in the prepared data did not fall as low as in the unprepared data In fact, from the slope and level of the training...
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Tài liệu Data Preparation for Data Mining- P17 ppt
... notable that the error rate in the training data set continued to fall so that the network continued to learn noise So much then for training on the “unprepared” data set The story shown for the prepared ... with data in the form collected in mainly corporate databases Clearly this is where the focus is today, and it is also the sort of data on which data mining tools and data modeling tools focus The ... 85.8283% accuracy in the test data for the prepared data set (bottom) 12.4 Practical Use of Data Preparation and Prepared Data How does a miner use data preparation in practice? There are three separate...
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Economic Analysis of the House Budget Resolution by the Center for Data Analysis at The Heritage Foundation pot
... Baseline The economic projections in the CBO Long-Term Alternative Fiscal Scenario forecast are the same as those underlying the CBO Long-Term Extended Baseline Scenario forecast.10 For the 10-year ... subsidies for health insurance coverage” which is not assumed in the CBO long-term AFS Therefore, the assumption underlying the spending in Medicaid, CHIP, and Exchange subsidies accounts for the percent ... (expanding the labor force).24 The change in the labor supply variables were adjusted by the macro-labor elasticity of two, which is a middle estimate of the ranges The adjustment to the add factors...
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The challenges for implementation of good manufacturing practices by local pharmaceutical manufactures in vietnam
... and the like Hence, the focus on only GMP while neglecting other four good practices (GLP, GSP, GDP, and GPP) is ineffectual to the product’s quality The brief concepts of the other four good practices ... generated where they are required by the standards, and where they are necessary for the control of the processes in the organization In addition to the requirements of ISO 9000, the code of GMP ... WHO Therefore, it is more useful to introduce briefly about the other famous and former GMP such as WHO GMP, U.S GMP before mentioning ASEAN GMP 2.2.1 Introduction of other GMPs • WHO GMP: The...
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Tài liệu Lecture 14: The Theoretical Basis for Data Communication: pptx
... us the ratio of two power levels, that is it expresses the gain of the system But some time we want to express the exact output power of a system rather than the gain In that case, we compare the ... an absolute measurement It is a relative measurement The decibel level indicates the relationship of one power level to another The formula for calculating decibel is : dB = 10 log Po/Pi = 10 ... such as the output is 20dB The relative power of output to input will tell us the gain of the amplifier, Po/PI = 1000mW/10mW = 100 The unit of measure used to compare two power levels is the decibel...
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Tài liệu The Role of BCG Vaccine in the Prevention and Control of Tuberculosis in the United States: A Joint Statement by the Advisory Council for the Elimination of Tuberculosis and the Advisory Committee on Immunization Practices docx
... explore the sources of the heterogeneity in the efficacy of the BCG vaccine reported in the individual studies Using a model that included the geographic latitude of the study site and the data ... recommended for most HCWs Physicians considering the use of BCG vaccine for their patients are encouraged to consult the TB control programs in their area INTRODUCTION Because the overall risk for acquiring ... risk for M tuberculosis infection in the overall population is low The primary strategy for preventing and controlling TB in the United States is to minimize the risk for transmission by the early...
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