Language for Array Data Processing

Team #6Date:03/02/2010

TEAMHaritha Rani Jadcherla

Vikram Sriram

Saloti Annapurna

Venkat Narasimha

MENTORS

Dr. Yue Kwon

Mr. Ravi Ganta

AGENDAIntroduction

BackgroundRequirement

AbstractLanguage specificationTool used (ANTLR)

Demo Future workReferences

BackgroundTraditional way of calculationsDecimal valuesPaper workPreciseness of results

RequirementsUser friendlyAccuracy

Software RequirementsTool

– Antlr

Microsoft Visual StudiosOperating system

– Windows XP or any later version

AbstractProblem

Difficulty in performing operations on arrays of data manually

Matrices have Tags

SolutionDesigning an interpreter that works on the user friendly

Domain Specific language generatedDeveloping a run time environment for the physicians to

perform operationsApproach

language specificationUn ambiguous grammarGenerating Lexer and Parser using an automated tool

(ANTLR)Developing a Run Time environment

Abstract

EvaluationUser friendly to perform various mathematical

operations on double dataAccuracyTime

Language Specification• Only 4 Matrices.• Up to 7 tags• Types in MedCheck• Operations on matrices

Arithmetic Operations Relational Operations Logical Operations

Types in MedCheckThere are basically two kinds of type:

Scalar Types: Integer, Double, Boolean, String

Vector Types: List and Matrix

Different ways to access matrix valuesMatrix Name [r,c];Example: M1[2,4];Matrix Name[{r1,r2},{c1,c2,c3}];Example: M1[{1,3},{2,4,6}];Matrix Name[{rn..rm},{cx..cy}];Example: M1[{1..3},{2..5}]Matrix Name[*,*];Example: M1[*,*];

Access to matrix cont..Matrix Name[*,c];Example: M1[*,4];Matrix Name[r,*];Example: M2[1,*];

Operations: ArithmeticAddition and subtractionMultiplicationDivisionAddition and subtraction with a scalarMultiplication and division by scalar

Operations: Relational And LogicalNo relational operations on matrices but on

elements of matricesNo Logical operations on matrices but on

elements of matrices

Search expressionMatrix Name<’@ condition(s) ‘>

Example: M1<’@value==3’>

Language SpecificationTypes of expressions

Arithmetic ExpressionsRelational ExpressionsLogical Expressions

Arithmetic ExpressionsAddition and SubtractionMultiplicationDivisionAddition and Subtraction with a scalarMultiplication and Division by Scalar

Relational and Logical ExpressionsNo relational operations on matrices but on

elements of matricesNo Logical operations on matrices but on

elements of matrices

Different Ways to Access Matrix valuesMatrix Name [r,c]; Matrix Name[{r1,r2,r3},{c1,c2,c3}];Matrix Name[{rn..rm},{cx..cy}]; where

rn..rm=cx..cyMatrix Name[*,*];Matrix Name[*,c];Matrix Name[r,*];

FunctionsTypes of Arguments:Scalar values i.e., double.Array where the first element represents row

index and the second element represents column index.

Array where the first element is represented by * meaning it takes all the values in that row, and the corresponding element represents column index and vice versa.

By accessing the tag value available from the cell location.

FunctionsVarious functions used are:

Average, Minimum, Maximum, Sin, Cos, Tan, Median, Standard Deviation, %CV, Sort, Log10, Exp, X^y(a,b)

Note: Sort, Log10, Exp, X^y(a,b), Sin, Cos and Tan functions does not accept set type of data in arguments.

TagsThree properties of Tag:

Tag NameTag ValueTag Content

Tag Name: Represents the name of the tag by means of which we can access a tag.

Tag Value: Represents the Value of the tag which the particular tag holds.

Tag content describes the content in the tag.

Tags (Contd…)Tag Creation:The command that is used for creating new tag at

user- prompt is as follows: M1.ATTRIBUTE+=ID;

Assigning the tag value:Tag value can be assigned directly at user-prompt as

following: M1.Tagname= value;

Deleting a tag:The command that is used for deleting tags is as

follows: M1.ATTRIBUTE-=ID;

ANTLR Demo

ConclusionDesign an interpreterAppropriate error reportingException handlingThe language is user friendlyHelp commands

Referenceshttp://www.antlr.org/wiki/pages/

viewpage.action?pageId=557075http://www.antlr.org/wiki/display/ANTLR3/

Antlr+3+CSharp+Target#Antlr3CSharpTarget-GettingStarted

http://www.antlr.org/wiki/display/ANTLR3/Five+minute+introduction+to+ANTLR+3

http://www.antlr.org

Questions