chapter 12  analyzing data with hadoop

... familiar with the Perl DBI will realize that there are a number of other parameters that we could take Our constructor method, new(), needs to a bit of initialization to set up the database connection, ... class and adds contained objects, our new() method will still the right thing with its parameters Now we connect to the database in preparation for retrieving components later: $self->{dbh} = DBI->connect ... table in the database, allowing us to uniquely identify a component For other resolvers, this might differ from the component path For example, the filesystem resolver that comes with Mason uses...

Ngày tải lên: 21/01/2014, 06:20

... you grant this extended privilege only when you not have valuable data on the server or if you have taken steps to ensure that the data cannot be accessed The privilege, called Universal XPConnect, ... turn on this privilege in your profile user preference file with the following line: enablePrivilege("UniversalXPConnect"); A script with this kind of plate-cleaning power can only be run successfully ... successfully when it's executed locally, as from a local XUL file with a element To open up XPConnect remotely with JavaScript like this, you have to use a signed script (see...

Ngày tải lên: 21/01/2014, 06:20

... some form of database lookup This section covers a simple example that uses data stored in a database to generate a XUL tree We will use PHP to retrieve the data from the SQL-driven database and ... generation, your database must be set up to handle table creation and dynamic updating via SQL calls Example 12-7 SQL script with User and Project data # table to be inserted into database CREATE ... the creation of a simple XUL tree with PHP and a MySQL database The "User" and "Project" columns display the data in the table Example 12-8 XUL generated from database

Ngày tải lên: 21/01/2014, 06:20

... necessary to accomplish this process 12.5.3.1 Creating a certificate database Mozilla comes with a prefilled certificate database that contains information about certificates from Verisign and ... directory), which you can modify However, starting with a blank database is better because it avoids the possibility of corruption At the prompt, create a new database by using the -N and -d options for ... foundation for the certificate chain and should not be shared with anyone outside your organization You may want to consider storing the database or exported certificate on a floppy disk for safe...

Ngày tải lên: 21/01/2014, 06:20

... can be stored The second imports your Signing Certificate into the database SignTool can use only certificates that reside in a database, which is the reason for this process 12.6.3 Creating and ... putting your application files in a JAR with a digital signature to validate everything The signing process described next in Section 12.6.3.1 deals entirely with SignTool Distribute your application ... C:\NSS\bin>signtool -d k"certs.mozdev.org/signing" -p"password_of_database" -Z"myapp.jar" myappfiles/ The -d option is where the certificate database resides and -k is the certificate name 12.6.3.2 Distributing...

Ngày tải lên: 21/01/2014, 06:20

... more information about these functions, along with examples, at http://www.mozilla.org/xmlextras/ The following sections assume that you are familiar with SOAP and NET If not, some good O'Reilly ... XML Extras and SOAP Mozilla has built functions called XML Extras that allow the use of XML as data in both JavaScript and C++ Such functions are an XML Serializer, XMLHttpRequest, XML Parser, ... can help get you started 12.9.1 Mozilla, SOAP, and NET In this section, SOAP is used to access data in a NET web service, therefore allowing the Snake game to have features such as a saved game...

Ngày tải lên: 26/01/2014, 07:20

... to network application Concern with: Cell loss ratio Cell transfer delay Cell delay variation Configuration of VCCs and VPCs Allocating VCCs within VPC All VCCs within VPC should experience similar ... Transmission delay may increase with congestion Packet may be discarded Source can detect these as implicit indications of congestion Useful on connectionless (datagram) networks e.g IP based ... level at which performance falls off dramatically Data network is a network of queues Generally 80% utilization is critical Finite queues mean data may be lost Queues at a Node Effects of Congestion...

Ngày tải lên: 06/03/2014, 09:21

... (val newData ) (local variable: median , rightBranch , newroot , result ) Return duplicate_error, success result = recursiveInsert (root, newData, ... subroot , val newData , ref median , ref rightBranch ) Return overflow, duplicate_error, success if (subroot = NULL) median = newData rightbranch = NULL result ... subroot , val newData , ref median , ref rightBranch ) // else, local variables: extraEntry, extraBranch if (SearchNode (subroot, newData, position) = success)...

Ngày tải lên: 15/03/2014, 17:20

... make room Pre Post node is pointer to node to contain data newEntry contains data to be inserted entryNdx is index to location for new data data have been inserted in sequence shifter = node -> ... Balance: shift data among nodes – Combine: join data from nodes Cao Hoang Tru CSE Faculty - HCMUT 22 17 November 2008 Balance Borrow from right Original node Rotate parent data down Rotate data to parent ... BTreeInsert (val root , val data ) Inserts data into B-tree Equal keys placed on right branch Pre Post Return root is a pointer to the B-tree May be null data inserted pointer to B-tree...

Ngày tải lên: 15/03/2014, 17:20

... by simulation with 100,000 iterations is $12.33 (with standard error 0.06), while the Black-Scholes price is $12.39 In EuroPut.xls, the European put price estimated by simulation with 100,000 ... and Put options on a stock with current price S0 =$100 and annual volatility σ = 40% The options have strike price K =$100, and six months until expiration, in a world with risk-free rate r = 5% ... securities in the market with the lower price, the forces of supply and demand cause the price to rise in that market Similarly, when the arbitrageurs sell the securities in the market with the higher...

Ngày tải lên: 05/07/2014, 18:20

... general than it may initially seem It covers cross section models with many equations, and it also covers panel data settings with small time series dimension The extension to independently pooled ... expectations But, as a statistical matter, equation (12.1) is equivalent to a model with an additive, unobservable error with a zero conditional mean: y ¼ mðx; y o Þ þ u; Eðu j xÞ ¼ ð12:2Þ Given equation ... Then, since y ! yo , y is in the interior of Y with probability approaching one If qðw; ÁÞ is continuously di¤erentiable on the interior of Y, ^ then (with probability approaching one) y solves the...

Ngày tải lên: 06/07/2014, 08:20

... http://www.epa.gov/nerlesd1/databases/assess/abstract.htm Assessment Database Software The Assessment Database (ADB) is a relational database application for tracking water quality assessment data, including ... specify http://www.epa.gov/air /data/ index.html AIRS Executive Software A personal computer software and database that contains air pollution data extracted from the AIRS database The Windows interface ... epa.gov/ttn/airs/airsaqs/aqsweb/aqswebhome.html AirData The site gives you access to air pollution data for the entire United States AirData produces reports and maps of air pollution data based on criteria that you...

Ngày tải lên: 11/08/2014, 21:21

... spatial data (2) Lower the cost of data (2) Global climate database Global data accessibility network Development of data infrastructures and metadata Data warehouse More databases Common data format ... Lack of data and gaps in data coverage (spatial and temporal) (8) Accuracy and error propagation (7) Data costs (3) Data incompatibility (2) Data sharing Lack of common format of data Data collection ... practical problems are encountered with data in G I s modelling Firstly, there is a lack of data, while data sets (spatial and temporal) frequently have gaps If data are available, then accuracy...

Ngày tải lên: 12/08/2014, 02:23

... An eye on a shank with internal left-handed threads, • An eye on a shank with external righthanded threads, and • A flanged collar with left-handed external threads to mate with the shank of ... structure with a clamp screw and thumb nut (K) A method for securing an attachment to a structure with a bolt and hand lever used as a nut (L) A method for fastening a member to a structure with a ... moderately large loads with comparatively small smooth surfaces, and the loads can be tightened or released with simple controls The clamps illustrated here can be tightened or released with screws, levers,...

Ngày tải lên: 22/10/2012, 14:26

... Modern process control can be clearly inserted into the drawing to provide a process technician with a complete picture of electronic and instrument systems Process operators can look at their ... Nonconnecting Line Nonconnecting Line Jacketed or Double Containment Vacuum Pump Horizontal Software or Data Link Vertical INSTRUMENT SYMBOLS Sump Pump BOILER Orifice TI Temp Indicator FI Flow Indicator ... structures and ground level In a multistory structure, the elevation drawing provides the technician with information about equipment location This information is important for making rounds, checking...

Ngày tải lên: 23/08/2013, 14:30

... George had come to Italy with us a I am pleased that George came to Italy with us b I am sorry that George isn't going to Italy with us c I hope that George will go to Italy with us d I am sorry ... never / both / in / with / pockets / hands: a Bow never with a hand or both hands in your pockets b Never bow with a hand or both hands in your pockets c Never bow in your pockets with a hand or both ... restaurants you should remove your shoes with bamboo mats b In traditional restaurants with bamboo mats, you should remove your shoes c You should remove your shoes with bamboo mats in traditional restaurants:...

Ngày tải lên: 27/09/2013, 17:10

... hierarchical -data environments The CourseCatalog examples shown above not include hierarchical data Chapter 21  Binding Data with ADO.NET 353 ■■ DataSet  This is the wizard-built DataSet instance ... Chapter 21  Binding Data with ADO.NET 349 Database Objects panel in step 14 of the instructions, select the CourseCatalog table from the list Type CourseDataSet in the DataSet Name field Click ... field Click Finish to add the DataSet to the project The Data Sources panel in Visual Studio now contains a CourseDataSet tree with the CourseCatalog table as a branch within it Expand the CourseCatalog...

Ngày tải lên: 03/10/2013, 00:20

... The return value is specified, along with its datatype (it's a float) SOAPProxy uses this explicit datatype to create a Python object of the correct native datatype and return it 12.5 Introducing ... You can list the available functions within a module, and with a little work, drill down to individual function declarations and arguments WSDL lets you that with SOAP web services WSDL stands ... functions in the same SOAP service with the same name and the same number of arguments, but the arguments were of different datatypes This is why it's important to match the datatypes exactly, and why...

Ngày tải lên: 17/10/2013, 19:15

... Example 18-1 Book/Cache.pm package Book::Cache; %Book::Cache: :DATA = get _data( ); sub get _data { # some heavy code that generates/retrieves data } 1; And initialize this module from startup.pl: use ... child copies the whole data structure into its namespace, and this data structure is not shared anymore Sharing Data Between Various Handlers Sometimes you want to set some data in one of the early ... this data is available for them all via a simple inclusion of the module in the handler’s code: use Book::Cache ( ); $foo = $Book::Cache: :DATA{ bar}; Be careful, though, when accessing this data...

Ngày tải lên: 20/10/2013, 09:15