Changeset 389 for vtcross/trunk/src/cognitive_engines/DSA_CE/DSA_CognitiveEngine.cpp

Timestamp:

07/28/09 23:23:14 (15 years ago)

Author:

trnewman

Message:

Added DSA CBR reference implementation.
Added simple python example application for DSA CBR.
Added GNUradio python application that uses CROSS and the DSA CBR.

Fixed several bugs in the socket interface.

Files:

• vtcross/trunk/src/cognitive_engines/DSA_CE/DSA_CognitiveEngine.cpp (modified) (5 diffs)

vtcross/trunk/src/cognitive_engines/DSA_CE/DSA_CognitiveEngine.cpp

@@ -27 +27 @@
 #include "sqlite3.h"
 #include "sqlite3ext.h"
+
+#define INTERFERENCE 0
+#define COMMUNICATION_TIME 1
+#define CHANNEL 2
+#define ENERGY 3
+#define FITNESS 4
+
 
 
@@ -632 +639 @@
 }
 
+
+/* The core of the CE is this function */
+
 Parameter* 
 CognitiveEngine::GetSolution(Observable *observables, Parameter *currentParameters)
@@ -637 +647 @@
     LOG("Cognitive Engine:: Generating solution.\n");
 
-    char *searchNames[radioInfo->numUtilities];
+    /* Put together the CBR search array */
+
+    char *searchNames[radioInfo->numUtilities + 1];
+    float searchVals[radioInfo->numUtilities + 1];
+    int searchOps[radioInfo->numUtilities + 1];
+    uint32_t numberColumns = radioInfo->numUtilities +
+                                radioInfo->numParameters +
+                                radioInfo->numObservables + 1;
 
     for(size_t i = 0; i < radioInfo->numUtilities; i++) {
-        searchNames[i] = (char*)observables[i].name.c_str();
-    }
-
-    float searchVals[radioInfo->numUtilities];
-
-    for(size_t i = 0; i < radioInfo->numUtilities; i++) {
-        searchVals[i] = uList[i].target;
-    }
-
-    uint32_t numberColumns = 
-        radioInfo->numUtilities +
-        radioInfo->numParameters +
-        radioInfo->numObservables + 1;
-    
-    float returnValues[numberColumns];
-    
-    int searchOps[radioInfo->numUtilities];
-    for(size_t i = 0; i < radioInfo->numUtilities; i++) {
-
-        /* If the goal is to maximum, set the search operation to
-         * return values greater than the target.
-         *
-         * If the goal is to minimize, set the search operation to
-         * return values less than the target.
-         */
+        searchNames[i] = (char*)uList[i].name.c_str();
+        
         if(strcmp(uList[i].goal.c_str(), "max") == 0) {
             searchOps[i] = GT;
@@ -670 +664 @@
             searchOps[i] = LT;
         }
-    }
-
-    /* CBR specific call */
+   
+        /* Set search target to utility target */
+        /* This may be bad if no target is set */ 
+        searchVals[i] = uList[i].target;
+    }
+   
+
+    /* Make sure we do not return any entries for the current channel */
+    searchNames[radioInfo->numUtilities+1] = "channel";
+    searchOps[radioInfo->numUtilities+1] = NE;
+    searchVals[radioInfo->numUtilities+1] = currentParameters[0].value; 
+ 
+    float returnValues[numberColumns];
+    
+    /* Execute CBR search and put output into returnValues */
     uint32_t rc = cbr_search(myCBR, searchNames, searchOps, searchVals,
             radioInfo->numUtilities, returnValues);
 
     if(rc == 0){
-        /* Adapt the returned parameters to meet the objective */
-        LOG("Cognitive Engine:: Found\n");
-
-        /* Should do a random adaptation.. */
+        /* Similiar environment was found. Adapt the returned parameters to 
+           meet the objective */
+
+        LOG("Cognitive Engine:: Previous similar environment found\n");
+
         if(returnValues[numberColumns-1] < 0) {
+        
             returnValues[2] = returnValues[2] - 15;
             returnValues[3] = returnValues[3] - 2;
+        
         } else {
+       
             returnValues[2] = returnValues[2] + 15;
             returnValues[3] = returnValues[3] + 2;
+        
         }
     } else if(rc == 31337) {
-        LOG("Cognitive Engine:: Not Found.\n");
-        /* No rows in the CBR, pick default parameters */
-        /* Currently this is hard coded and implementation specific! */
-        returnValues[2] = currentParameters[0].value + 5;
-        returnValues[3] = currentParameters[1].value + 10;
-        
+        /* No previous similar solution was found, use default. */
+        LOG("Cognitive Engine:: No previous similar environment found.\n");
+     
+        /* In the DSA case, the default is to select a random channel */
+ 
+        /* initialize random seed: */
+        srand ( time(NULL) );
+
+        /* generate random channel */
+        //returnValues[CHANNEL] = rand() % currentParameters[0].max + currentParameters[0].min; 
+        returnValues[CHANNEL] = rand() % 5; 
+       
+        printf("One: %i Two: %i\n",(int)currentParameters[0].max,(int)currentParameters[0].min);
+ 
     } else {
         LOG("Cognitive Engine:: Search return an invalid value.\n");
     }
+
+
+    /* Package up the new set of parameters in order to add
+       the new entry into the CBR database.  */
 
     size_t returnValueIndex = 0;
@@ -732 +755 @@
     allNames[allNameIndex] = "utility";
 
-    // Add row to CBR. 
+    /* Add the new optimized set to the CBR database */
     cbr_add_row(myCBR, allNames, returnValues, returnValueIndex+1);
 
+    /* Return the set of new parameter values.  */
     return pList;
 }