(start) from scratch 从头开始 de nov

title: from scratch
date: 2019-03-18 15:52:28
NO_sents: 115
NO_references: 56

from scratch

• Employ one or a team of quantitative geneticists to develop systems and software needed from scratch (a long and expensive project). (Robinson, Robinson, 2008)
• These databases are normally very specific to the species in question and in the past have been built largely from scratch. (Robinson, Robinson, 2008)
• This book was written for anyone who wishes to explore deep learning from scratch or broaden their understanding of deep learning. (Chollet, 2018)
• In this chapter, we will see a very basic example to help get started with a data science ecosystem from scratch. (Igual, Segu, 2017)
• Although it is very easy to create DataFrames from scratch, most of the time what we will need to do is import chunks of data into a DataFrame structure, and we will see how to do this in later examples. (Igual, Segu, 2017)
• It is a good idea to rebuild the tree from scratch occasionally--e.g., when its depth grows to twice the best possible depth. (Witten et al., 2016)
• We can avoid starting the posterior calculations from scratch by using a result due to Kass, Tierney, and Kadane (1989). (Carlin, Louis, Carlin, 2009)
• If an organism develops a new muscle, it doesn't start from scratch and reinvent all the components of a muscle in order to provide for that new muscle. (Amato et al., 2009)
• But do humans understand enzyme function well enough to design a better nitrogenase from scratch? (Sadras, Calderni, 2014)
• If we could imagine an idealized case where humanity could start from scratch and conduct domestication from a scientific, long-term perspective, unconstrained by political pressure for rapid financial return on research investment, the needs of agricultural constituents, or the burden of feeding today's hungry, what would we do differently? (Van Tassel et al., 2017)
• A standard makes initial data cleaning easier because you do not need to start from scratch and reinvent the wheel every time. (Wickham, 2014)
• If you invoke RStudio from scratch, instead of via a program file, then the working directory is a default generic folder and consequently R will not know where to find auxiliary programs used with this book. (Kruschke, 2013)
• Genes from scratch--the evolutionary fate of de novo genes. (Stein et al., 2018)
• It is worth reflecting on the fact that a lot was achieved during 115 years of scientific plant breeding because breeders were not starting from scratch with respect to their raw material (germplasm). (Bradshaw, 2016)
• To design an experiment from scratch. (Anderson-Cook, Montgomery, Myers, 2016)
• When a design is chosen from scratch, the same result applies. (Anderson-Cook, Montgomery, Myers, 2016)
• In the rest of this chapter we will give you a brief history of animal breeding, starting from scratch (so from domestication). (Arendonk, 2018)
• In other words, it is the same as if one started at the time s of the first blip; one must "start over from scratch," the previous waiting time being irrelevant. (Baclawski, 2008)
• In fact, the operation count for each subsequent system is in the order of n2, whereas this count would be on the order of n3/3 were we to start from scratch each time for every new right-hand side. (Banerjee, Roy, 2014)
• There is a workflow editor capability in development; this allows the user to create a workflow from scratch or from a previous query history. (Barnes, 2010)
• Using an Automated Workflow Galaxy has an automated workflow capability in development; this allows the user to create a workflow from scratch or from previous query history. (Barnes, 2010)
• This process will maintain the provenance of your data and allow analyses to be updated with new data without having to start data wrangling from scratch. (Baumer, Kaplan, Horton, 2017)
• If you want to build a base from scratch--as we do in Section 13.3--you will have to write these definitions for each table1. (Baumer, Kaplan, Horton, 2017)
• Write your own table schema from scratch and import these data into the database server of your choice. (Baumer, Kaplan, Horton, 2017)
• We will write a function to compute a t-based confidence interval for a mean from scratch. (Baumer, Kaplan, Horton, 2017)
• In the 1990s two New Zealand statisticians, Ross Ihaka and Robert Gentleman, re-wrote S from scratch, again as a research project. (Bolker, 2008)
• Warning: Models with multiple levels of variability and dynamical models, the subjects of the last two chapters, are much harder to create and fit from scratch. (Bolker, 2008)
• These methods are challenging enough that, in contrast to the models of previous chapters, you will often be better off finding an existing procedure that matches the characteristics of your data rather than coding the model from scratch. (Bolker, 2008)
• For completeness, we will derive the formula (12.3) from scratch here. (Boyd, Vandenberghe, 2018)
• Rather than recreating a QTL object from scratch with makeqtl, one can use addtoqtl to add an additional locus to a QTL object that was previously created. (Broman, Sen, 2009)
• Now, there is no reason to start from scratch as we already know how to create regr objects. (Eubank, Kupresanin, 2011)
• That is, rather than create code for an ADT from scratch, in most instances it is more advisable to use an existing, third-party ADT implementation. (Eubank, Kupresanin, 2011)
• Life would be quite complicated if all our files and directories had to be created from scratch. (Eubank, Kupresanin, 2011)
• The creation of new files from scratch will often be accomplished via some type of text editor. (Eubank, Kupresanin, 2011)
• This is significantly faster than fitting the model from scratch as the overhead in setting up the model is avoided. (Faraway, 2006)
• It is a common practice to use update(), a generic function to modify and refit a given model, instead of specifying the model from scratch. (Galecki, Burzykowski, 2013)
• T-ARGUS generates the tables to be protected from scratch from a microdata file. (Geert Molenberghs Helena Geys, 1998)
• In both cases calculations from the raw data are much reduced in comparison with the evaluation of each split "from scratch" . (Geert Molenberghs Helena Geys, 1998)
• If in an interactive session the wrong calculation has been made, then at best the Datacalculate, Model-fit and Results-display commands will have to be re-entered, and at worst the data may have been corrupted and the program will have to start from scratch. (Geert Molenberghs Helena Geys, 1998)
• If you set up a complicated model and you can't get it to run--or it will run but its results don't make sense--then either build it from scratch, or strip it down until you can get it to work and make sense. (Gelman, Hill, 2007)
• In this case, it's usu ally easy to start from scratch again by pressing Esc to abort process ing the current command. (Grolemund, Wickham, Lortie, 2016)
• Often, we are not so lucky that the groundwork is done for us and we have to start from scratch. (Howard, 2017)
• Alternatively, you may simply start from scratch by providing an appropriate header line and typing the name of fields in the ConTEXT editor following the exact order in the data file. (Isik, Holland, Maltecca, 2017)
• Finally, if you are starting from scratch, it is perhaps best to begin with the SVM functions in the kernlab package. (Lantz, 2015)
• Having learnt to beat you, it can go on and use the same strategies against other players, so that it doesn't start from scratch with each new player; this is a form of generalisation. (Marsland, 2014)
• This is, of course, less commonly the case when the desire is to learn about some new problem, when either the data has to be collected from scratch, or at the very least, assembled and prepared. (Marsland, 2014)
• 1.9.2 Nonparametric Regression Estimation: k-NN Now let's drop the linear model assumption (1.14), and estimate our regression function "from scratch." (Matloff, 2017)
• In my experience teaching scientific programming, novices learn more quickly when they have working code to modify, rather than needing to write an algorithm from scratch. (McElreath, 2015)
• I'm going to build these data from direct input, rather than loading a pre-made data frame, just so you see an example of how to build a data frame from scratch. (McElreath, 2015)
• Science requires division of labor, and if every one of us had to write our own Markov chains from scratch, a lot less research would get done in the aggregate. (McElreath, 2015)
• We'll construct posterior predictions (retrodictions), using both the automated link approach and doing it from scratch, so there is no confusion. (McElreath, 2015)
• Instead of doing O.N 3/ operations each time to solve the equations from scratch, one can often update a matrix factorization in O.N 2/ operations and use the new factorization to solve the next set of linear equations. (Press et al., 2007)
• To make Primpolytest entirely self-contained, matrices are implemented as linear arrays, and the structure builds from scratch the few matrix operations that it needs. (Press et al., 2007)
• For any specific problem, proceeding from scratch is usually easier than deci- phering the notation and applying the proposition. (Rice, 2006)