... once a day for days before surgery children : enema of water and glycerin (9:1) twice a day for days before surgery Group B (n= 77): a low-reside diet and no other mechanical bowel preparation ... versus no preparation, Outcome Anastomosis leakage stratified for colonic or rectal surgery Review: Mechanical bowel preparation for elective colorectal surgery Comparison: Mechanical bowel preparation ... Mechanical bowel preparation for elective colorectal surgery Comparison: Mechanical bowel preparation versus no preparation Outcome: Anastomosis leakage stratified for colonic or rectal surgery Study...
Ngày tải lên: 24/03/2014, 05:20
Data Preparation for Data Mining- P3
... Transformations and Difficulties—Variables, Data, and Information Much of this discussion has pivoted on information—information in a data set, information content of various scales, and transforming ... reason to prepare 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 ... Split-Merge on www.verypdf.com to remove this watermark Data forms the source material that the miner examines for information The extracted information allows better predictions of the behavior of...
Ngày tải lên: 24/10/2013, 19:15
Data Preparation for Data Mining- P4
... and in human time, effort, and expertise Do the results justify the effort? Clearly, some minimal data preparation has to be done for any modeling tool Neural networks, for instance, require ... stored in which formats Point-of-sale (POS) data, for instance, captures information about a purchasing event at the point that the sale takes place A vast wealth of possible information could ... consumer chose for carrying away purchases This kind of information may be useful and informative, but the structure created to capture data has no place to put it Macrostructure concerns the formatting...
Ngày tải lên: 24/10/2013, 19:15
Data Preparation for Data Mining- P5
... that are valid only for patients of one particular gender Business or procedural rules enforce other conditional domains For example, fraud investigations may not be conducted for claims of less ... maximum value sampled for numeric variables • MIN The minimum value sampled for numeric variables • DISTINCT The number of distinct values for the variable in the sample For example, if the field ... 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 preparation software...
Ngày tải lên: 29/10/2013, 02:15
Data Preparation for Data Mining- P6
... 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 and understanding brought ... of the formula shown above, but gives a different perspective and reveals something else that is going on inside this formula—something that is very important a little later in the data preparation ... and standard deviation for each of these samples is shown in Table 5.1 Figure 5.5 Distribution curves for samples drawn from three populations TABLE 5.1 Sample statistics for three distributions...
Ngày tải lên: 29/10/2013, 02:15