P2020-007 exam Dumps Source : IBM Optimization Technical Mastery Test v1
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In September 2018, IBM introduced a brand original product, IBM Db2 AI for z/OS. This ersatz intelligence engine monitors records entry patterns from executing SQL statements, makes exhaust of desktop getting to know algorithms to pick out most efficient patterns and passes this counsel to the Db2 query optimizer to subsist used by means of subsequent statements.machine discovering on the IBM z Platform
In may moreover of 2018, IBM announced version 1.2 of its computer researching for z/OS (MLz) product. this is a hybrid zServer and cloud software suite that ingests performance records, analyzes and builds models that characterize the health fame of quite a lot of symptoms, screens them over time and provides precise-time scoring capabilities.
a couple of elements of this product providing are aimed at helping a community of model developers and managers. for instance:
This computer gaining erudition of suite changed into at first aimed toward zServer-based mostly analytics functions. one of the vital first glaring decisions become zSystem performance monitoring and tuning. system administration Facility (SMF) records which are immediately generated by using the working system provide the uncooked facts for materiel aid consumption akin to central processor utilization, I/O processing, memory paging and the like. IBM MLz can assemble and shop these records over time, and construct and coach models of system conduct, ranking these behaviors, identify patterns not with ease foreseen by using people, develop key performance symptoms (KPIs) after which feed the mannequin effects lower back into the device to absorb an outcome on materiel configuration adjustments that may enlarge performance.
The subsequent step become to implement this suite to investigate Db2 efficiency records. One solution, called the IBM Db2 IT Operational Analytics (Db2 ITOA) solution template, applies the laptop learning know-how to Db2 operational information to capitalize an understanding of Db2 subsystem fitness. it might dynamically build baselines for key efficiency indications, deliver a dashboard of those KPIs and give operational workforce precise-time insight into Db2 operations.
while time-honored Db2 subsystem performance is an captious constituent in natural software health and efficiency, IBM estimates that the DBA serve staff spends 25% or greater of its time, " ... combating entry direction complications which occasions efficiency degradation and repair affect.". (See Reference 1).AI involves Db2
consider the plight of modern DBAs in a Db2 ambiance. In today's IT world they must assist one or extra massive records functions, cloud software and database functions, application installation and configuration, Db2 subsystem and application performance tuning, database definition and administration, catastrophe recuperation planning, and extra. question tuning has been in being on the grounds that the origins of the database, and DBAs are always tasked with this as well.
The heart of query route analysis in Db2 is the Optimizer. It accepts SQL statements from purposes, verifies authority to access the statistics, studies the areas of the objects to subsist accessed and develops a list of candidate statistics access paths. These access paths can encompass indexes, desk scans, a lot of desk subsist a allotment of methods and others. within the information warehouse and big facts environments there are always additional selections available. One of these is the being of summary tables (sometimes called materialized question tables) that hold pre-summarized or aggregated information, accordingly enabling Db2 to maintain away from re-aggregation processing. yet another election is the starjoin access route, criterion within the statistics warehouse, the station the order of desk joins is modified for efficiency motives.
The Optimizer then experiences the candidate access paths and chooses the access route, "with the lowest cost." can impregnate in this context capacity a weighted summation of useful resource utilization including CPU, I/O, memory and different components. eventually, the Optimizer takes the bottom cost access direction, stores it in reminiscence (and, optionally, in the Db2 listing) and starts off access route execution.
large records and information warehouse operations now include application suites that allow the commerce analyst to invent exhaust of a graphical interface to build and exploit a miniature data mannequin of the records they want to analyze. The programs then generate SQL statements according to the users’ requests.
The rigor for the DBA
so as to finish well-behaved analytics for your multiple facts shops you exigency an outstanding understanding of the records requirements, an figuring out of the analytical services and algorithms accessible and a excessive-performance information infrastructure. sadly, the number and location of records sources is increasing (each in size and in geography), statistics sizes are starting to be, and applications proceed to proliferate in number and complexity. How should IT managers aid this atmosphere, chiefly with essentially the most experienced and mature staff nearing retirement?
consider additionally that a huge allotment of reducing the replete impregnate of possession of those systems is to net Db2 functions to dash quicker and greater efficiently. This always interprets into using fewer CPU cycles, doing fewer I/Os and transporting less information across the network. given that it's commonly difficult to even identify which functions could capitalize from efficiency tuning, one approach is to automate the detection and correction of tuning issues. here is the station laptop gaining erudition of and synthetic intelligence may moreover subsist used to tremendous impact.Db2 12 for z/OS and synthetic Intelligence
Db2 edition 12 on z/OS uses the desktop learning facilities mentioned above to acquire and save SQL query textual content and access route particulars, in addition to precise efficiency-linked mature suggestions akin to CPU time used, elapsed instances and outcome set sizes. This providing, described as Db2 AI for z/OS, analyzes and shops the facts in machine learning fashions, with the model analysis outcomes then being scored and made attainable to the Db2 Optimizer. The subsequent time a scored SQL commentary is encountered, the Optimizer can then exhaust the model scoring statistics as input to its entry path election algorithm.
The result may still subsist a reduction in CPU consumption because the Optimizer uses mannequin scoring enter to elect more suitable entry paths. This then lowers CPU prices and speeds application response times. a major competencies is that the usage of AI software doesn't require the DBA to absorb statistics science talents or abysmal insights into query tuning methodologies. The Optimizer now chooses the most profitable access paths based now not simplest on SQL query syntax and facts distribution records however on modelled and scored mature efficiency.
This may moreover subsist specifically captious if you store records in diverse locations. as an instance, many analytical queries against big statistics require concurrent entry to positive information warehouse tables. These tables are generally known as dimension tables, and they hold the records points usually used to manage subsetting and aggregation. as an instance, in a retail atmosphere believe a table known as StoreLocation that enumerates each save and its vicinity code. Queries against save income information may additionally exigency to aggregate or summarize income by using vicinity; therefore, the StoreLocation table should subsist used by route of some big data queries. in this atmosphere it's habitual to Take the dimension tables and copy them continuously to the big facts application. within the IBM world this belt is the IBM Db2 Analytics Accelerator (IDAA).
Now believe about SQL queries from each operational applications, facts warehouse users and expansive records enterprise analysts. From Db2's viewpoint, eachandevery these queries are equal, and are forwarded to the Optimizer. youngsters, within the case of operational queries and warehouse queries they should still definitely subsist directed to entry the StoreLocation table in the warehouse. even so, the question from the commerce analyst against big facts tables should doubtless entry the reproduction of the desk there. This outcomes in a proliferations of erudition entry paths, and extra work for the Optimizer. fortunately, Db2 AI for z/OS can supply the Optimizer the suggestions it needs to invent sensible entry route selections.the route it Works
The sequence of pursuits in Db2 AI for z/OS (See Reference 2) is frequently birthright here:
There are moreover a considerable number of user interfaces that give the administrator visibility to the popularity of the amassed SQL remark performance records and mannequin scoring.summary
IBM's machine getting to know for zOS (MLz) providing is getting used to much outcome in Db2 edition 12 to enhance the efficiency of analytical queries as well as operational queries and their linked functions. This requires administration attention, as you absorb to investigate that your enterprise is ready to consume these ML and AI conclusions. How will you measure the costs and benefits of the usage of machine researching? Which IT assist workforce should subsist tasked to reviewing the outcomes of mannequin scoring, and maybe approving (or overriding) the effects? How will you assessment and warrant the assumptions that the application makes about entry path choices?
In other words, how neatly finish you know your statistics, its distribution, its integrity and your latest and proposed entry paths? this could investigate where the DBAs spend their time in helping analytics and operational utility performance.
# # #
John Campbell, IBM Db2 special EngineerFrom "IBM Db2 AI for z/OS: enhance IBM Db2 utility performance with desktop researching"https://www.worldofdb2.com/activities/ibm-db2-ai-for-z-os-boost-ibm-db2-utility-efficiency-with-ma
Db2 AI for z/OShttps://www.ibm.com/aid/knowledgecenter/en/SSGKMA_1.1.0/src/ai/ai_home.html
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Ricardo Balduino and Tim BohnEarly Flight, Creative Commons Introduction
As they described in allotment 1 of this series, their objective is to serve predict the probability of the cancellation of a flight between two of the ten U.S. airports most affected by weather conditions. They exhaust historical flights data and historical weather data to invent predictions for upcoming flights.
Over the course of this four-part series, they exhaust different platforms to serve us with those predictions. Here in allotment 2, they exhaust the IBM SPSS Modeler and APIs from The Weather Company.Tools used in this exhaust case solution
IBM SPSS Modeler is designed to serve determine patterns and trends in structured and unstructured data with an intuitive visual interface supported by advanced analytics. It provides a purview of advanced algorithms and analysis techniques, including text analytics, entity analytics, decision management and optimization to deliver insights in near real-time. For this exhaust case, they used SPSS Modeler 18.1 to create a visual representation of the solution, or in SPSS terms, a stream. That’s right — not one line of code was written in the making of this blog.
We moreover used The Weather Company APIs to retrieve historical weather data for the ten airports over the year 2016. IBM SPSS Modeler supports calling the weather APIs from within a stream. That is accomplished by adding extensions to SPSS, available in the IBM SPSS Predictive Analytics resources page, a.k.a. Extensions Hub.A proposed solution
In this blog, they submit one practicable solution for this problem. It’s not meant to subsist the only or the best practicable solution, or a production-level solution for that matter, but the discussion presented here covers the typical iterative process (described in the sections below) that helps us accumulate insights and refine the predictive model across iterations. They encourage the readers to try and reach up with different solutions, and provide us with your feedback for future blogs.Business and data understanding
The first step of the iterative process includes understanding and gathering the data needed to train and test their model later.
Flights data — We gathered 2016 flights data from the US Bureau of Transportation Statistics website. The website allows us to export one month at a time, so they ended up with 12 csv (comma separated value) files. They used IBM SPSS Modeler to merge eachandevery the csv files into one set and to select the ten airports in their scope. Some data clean-up and formatting was done to validate dates and hours for each flight, as seen in motif 1.Figure 1 — gathering and preparing flights data in IBM SPSS Modeler
Weather data — From the Extensions Hub, they added the TWCHistoricalGridded extension to SPSS Modeler, which made the extension available as a node in the tool. That node took a csv file listing the 10 airports latitude and longitude coordinates as input, and generated the historical hourly data for the entire year of 2016, for each airport location, as seen in motif 2.Figure 2 — gathering and preparing weather data in IBM SPSS Modeler
Combined flights and weather data — To each flight in the first data set, they added two original columns: inception and DEST, containing the respective airport codes. Next, flight data and the weather data were merged together. Note: the “stars” or SPSS super nodes in motif 3 are placeholders for the diagrams in Figures 1 and 2 above.Figure 3 — combining flights and weather data in IBM SPSS Modeler Data preparation, modeling, and evaluation
We iteratively performed the following steps until the desired model qualities were reached:
· Prepare data
· effect modeling
· Evaluate the model
Figure 4 shows the first and second iterations of their process in IBM SPSS Modeler.Figure 4 — iterations: prepare data, dash models, evaluate — and finish it again First iteration
To start preparing the data, they used the combined flights and weather data from the previous step and performed some data cleanup (e.g. took care of null values). In order to better train the model later on, they filtered out rows where flight cancellations were not related to weather conditions (e.g. cancellations due to technical issues, security issues, etc.)Figure 5 — imbalanced data institute in their input data set
This is an keen exhaust case, and often a arduous one to solve, due to the imbalanced data it presents, as seen in motif 5. By “imbalanced” they besubstantive that there were far more non-cancelled flights in the historical data than cancelled ones. They will dispute how they dealt with imbalanced data in the following iteration.
Next, they defined which features were required as inputs to the model (such as flight date, hour, day of the week, inception and destination airport codes, and weather conditions), and which one was the target to subsist generated by the model (i.e. predict the cancellation status). They then partitioned the data into training and testing sets, using an 85/15 ratio.
The partitioned data was fed into an SPSS node called Auto Classifier. This node allowed us to dash multiple models at once and preview their outputs, such as the belt under the ROC curve, as seen in motif 6.Figure 6 — models output provided by the Auto Classifier node
That was a useful step in making an initial selection of a model for further refinement during subsequent iterations. They decided to exhaust the Random Trees model since the initial analysis showed it has the best belt under the curve as compared to the other models in the list.Second iteration
During the second iteration, they addressed the skewedness of the original data. For that purpose, they chose one of the SPSS nodes called SMOTE (Synthetic Minority Over-sampling Technique). This node provides an advanced over-sampling algorithm that deals with imbalanced datasets, which helped their selected model work more effectively.Figure 7 — distribution of cancelled and non-cancelled flights after using SMOTE
In motif 7, they notice a more balanced distribution between cancelled and non-cancelled flights after running the data through SMOTE.
As mentioned earlier, they picked the Random Trees model for this sample solution. This SPSS node provides a model for tree-based classification and prediction that is built on Classification and Regression Tree methodology. Due to its characteristics, this model is much less supine to overfitting, which gives a higher likelihood of repeating the very test results when you exhaust original data, that is, data that was not allotment of the original training and testing data sets. Another advantage of this method — in particular for their exhaust case — is its ability to handle imbalanced data.
Since in this exhaust case they are dealing with classification analysis, they used two common ways to evaluate the performance of the model: confusion matrix and ROC curve. One of the outputs of running the Random Trees model in SPSS is the confusion matrix seen in motif 8. The table shows the precision achieved by the model during training.Figure 8 — Confusion Matrix for cancelled vs. non-cancelled flights
In this case, the model’s precision was about 95% for predicting cancelled flights (true positives), and about 94% for predicting non-cancelled flights (true negatives). That means, the model was amend most of the time, but moreover made wrong predictions about 4–5% of the time (false negatives and mistaken positives).
That was the precision given by the model using the training data set. This is moreover represented by the ROC curve on the left side of motif 9. They can see, however, that the belt under the curve for the training data set was better than the belt under the curve for the testing data set (right side of motif 9), which means that during testing, the model did not effect as well as during training (i.e. it presented a higher rate of errors, or higher rate of mistaken negatives and mistaken positives).Figure 9 — ROC curves for the training and testing data sets
Nevertheless, they decided that the results were still well-behaved for the purposes of their discussion in this blog, and they stopped their iterations here. They encourage readers to further refine this model or even to exhaust other models that could resolve this exhaust case.Deploying the model
Finally, they deployed the model as a leisure API that developers can call from their applications. For that, they created a “deployment branch” in the SPSS stream. Then, they used the IBM Watson Machine Learning service available on IBM Bluemix here. They imported the SPSS stream into the Bluemix service, which generated a scoring endpoint (or URL) that application developers can call. Developers can moreover call The Weather Company APIs directly from their application code to retrieve the forecast data for the next day, week, and so on, in order to pass the required data to the scoring endpoint and invent the prediction.
A typical scoring endpoint provided by the Watson Machine Learning service would sight enjoy the URL shown below.
https://ibm-watson-ml.mybluemix.net/pm/v1/score/flights-cancellation?accesskey=<provided by WML service>
By passing the expected JSON corpse that includes the required inputs for scoring (such as the future flight data and forecast weather data), the scoring endpoint above returns if a given flight is likely to subsist cancelled or not. This is seen in motif 10, which shows a call being made to the scoring endpoint — and its response — using an HTTP requester implement available in a web browser.Figure 10 — actual request URL, JSON body, and response from scoring endpoint
Notice in the JSON response above that the deployed model predicted this particular flight from Newark to Chicago would subsist 88.8% likely to subsist cancelled, based on forecast weather conditions.Conclusion
IBM SPSS Modeler is a powerful implement that helped us visually create a solution for this exhaust case without writing a solitary line of code. They were able to ensue an iterative process that helped us understand and prepare the data, then model and evaluate the solution, to finally deploy the model as an API for consumption by application developers.Resources
The IBM SPSS stream and data used as the basis for this blog are available on GitHub. There you can moreover find instructions on how to download IBM SPSS Modeler, net a key for The Weather Channel APIs, and much more.
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The MIPI Alliance released MIPI I3C Basic v1.0, a subset of the MIPI I3C sensor interface specification that bundles 20 of the most commonly needed I3C features for developers and other standards organizations. The royalty-free specification includes backward compatibility with I2C, 12.5 MHz multi-drop bus that is over 12 times faster than I2C supports, in-band interrupts to allow slaves to notify masters of interrupts, dynamic address assignment, and standardized discovery.
Efinix will expand its product offering, adding a 200K logic constituent FPGA to its lineup with the Triton T200. The T200 targets AI-driven products, and its architecture has enough LEs, DSP blocks, and on-chip RAM to deliver 1 TOPS for CNN at INT8 precision and 5 TOPS for BNN, according to Efinix CEO Sammy Cheung. The company moreover released samples of its Trion T20 FPGA.
Faraday Technology released multi-protocol video interface IP on UMC 28nm HPC. The Multi-Protocol Video Interface IP solution supports both transmitter (TX) and receiver (RX). The transmitter allows for MIPI and CMOS-IO combo solutions for package cost reduction and flexibility, while the receiver combo PHY includes MIPI, LVDS, subLVDS, HiSPi, and CMOS-I/O to support a diversified purview of interfaces to CMOS image sensors. Target applications include panel and sensor interfaces, projectors, MFP, DSC, surveillance, AR and VR, and AI.
Analog implement and IP maker Movellus closed a second round of funding from Intel Capital. Movellus’ technology automatically generates analog IPs using digital implementation tools and criterion cells. The company will exhaust the funds to expand its customer groundwork and to enlarge its portfolio of PLLs, DLLs and LDOs for exhaust in semiconductor and system designs at advanced process nodes.
Imec and Synopsys completed a comprehensive sub-3nm parasitic variation modeling and slow sensitivity study of complementary FET (CFET) architectures. The QuickCap NX 3D bailiwick solver was used by Synopsys R&D and imec research teams to model the parasitics for a variety of device architectures and to identify the most captious device dimensions and properties, which allowed for optimization of CFET devices for better power/performance trade-offs.
Credo utilized Moortec’s Temperature Sensor and Voltage Monitor IP to optimize performance and enlarge reliability in its latest generation of SerDes chips. Moortec’s PVT sensors are utilized in eachandevery Credo criterion products which are being deployed on system OEM linecards and 100G per lambda optical modules. Credo cited ease of integration and reduced time-to-market and project risk.
Wave Computing selected Mentor’s Veloce Strato emulation platform for functional verification and validation of its latest Dataflow Processor Unit chip designs, which will subsist used in the company’s next-generation AI system. Wave cited capacity and scaling advantages, breadth of virtual exhaust models, reliability, and determinism as behind the choice.
MaxLinear adopted Cadence’s Quantus and Tempus timing signoff tools in developing the MxL935xx Telluride device, a 400Gbps PAM4 SoC using 16FF process technology. MaxLinear estimated they got 2X faster multi-corner extraction runtimes versus single-corner runs and 3X faster timing signoff flow.
The European Processor Initiative selected Menta as its provider of eFPGA IP. The EPI, a collaboration of 23 partners including Atos, BMW, CEA, Infineon and ST, has the objective of co-designing, manufacturing and bringing to market a system that supports the high-performance computing requirements of exascale machines.Jesse Allen (all posts)Jesse Allen is the erudition seat administrator and a senior editor at Semiconductor Engineering.
Microsoft announced on Monday that original tools absorb been released to serve further extend the compatibility and interoperability of Office Open XML (OOXML) document formats used in Microsoft Office 2007.
The original tools are being developed by various open source projects. In addition, the Fraunhofer Fokus research group is working on a future "test library and validation tool" that will check document formats to notice how well they comply with ISO/IEC 29500 and ECMA-376, which are OOXML-based international standards. Microsoft is a colleague in the validation implement effort, which was announced in late February.
One of the open source projects releasing a original implement is Apache POI, which works to invent OOXML files readable in Java-based applications. On Monday, Apache POI 3.5 beta 5 was released at the Apache POI Web site, along with a software development kit. This latest release adds "improved support" for .DOCX (Word) and .PPTX (PowerPoint) file formats, as well as "extended support" for the .XLSX (Excel) file format, according to a Microsoft announcement. Microsoft first began collaborating with the Apache POI project back in March of terminal year.
On Friday, MindTree and Microsoft released the Open XML Document Viewer v1.0 application. This browser plug-in, available at the CodePlex open source project site, allows Microsoft Office 2007 documents to subsist read in a Web browser. The Open XML Document Viewer, which translates OOXML-based files to HTML, now supports the Opera browser on both Windows and Linux. Other supported browsers include Firefox and Internet Explorer versions 7 and 8.
Microsoft and Dialogika absorb enhanced an Office Binary to Open XML Translator application by adding support for .XLS and .PPT files. This application lets the user translate Office binary files into OOXML and OpenDocument Format (ODF) files. The phase III final version of the translator was released on SourceForge in late April.
Finally, the Open XML-ODF Translator add-in for Microsoft Office got some improvements with version 3.0, which was released in late March on SourceForge. Microsoft supported ODF 1.1 with this translator release.
Native support for ODF 1.1 is now allotment of Microsoft Office 2007 Service Pack 2, which was released in late April. However, the attribute of that support has sparked an open spat among OASIS Technical Committee members who are currently overseeing the ODF international standard.
A blog entry by Rob Weir, IBM's chief ODF architect and chair of the ODF Technical Committee at OASIS, accused Microsoft of either incompetence or sabotage by not supporting an ODF namespace convention that helps translate formulas in spreadsheets between applications. In response, Gray Knowlton, a Microsoft group product manager, called for Weir to "step down as chairman." Microsoft and IBM still absorb some unfavorable blood left over from a contentious ISO/IEC OOXML standardization process and both are now participants in the OASIS ODF standards effort.
Microsoft's Doug Mahugh, lead standards professional on the Office interoperability team, explained in his blog that the ODF criterion doesn't specify the code-handing details for formulas sufficiently enough. He claimed that even IBM's Lotus Symphony spreadsheet has a problem translating formulas to other ODF-based spreadsheets, such as Sun's OpenOffice.org. In a later blog entry, Mahugh said that ODF document changes aren't being supported in Microsoft Word's ODF implementation OOXML because of technical issues and unclear ODF documentation in the ODF specification, among other details.
"Tracked changes are essential to document collaboration, and formulas are the essence of spreadsheets. Microsoft's failure to support either in SP2 is revealing with admiration to its support for real-world interoperability," stated Marino Marcich, managing director of the ODF Alliance, an industry trade group promoting ODF, in a released statement.
The upshot of these spats, according to a Burton Group blog, is that there are still major compatibility problems between the ODF and OOXML document formats. The blog emphasized that enterprises should stick with the document formats they currently exhaust in their office productivity software until such kinks net worked out. The blog moreover notable that ODF 1.2, when it's released, will likely absorb an Open Formula syntax that will resolve the current impasse.
Kurt Mackie is senior advice producer for the 1105 Enterprise Computing Group.
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