void ba81NormalQuad::layer::setStructure(Eigen::ArrayBase<T1> ¶m,
Eigen::MatrixBase<T2> &gmean, Eigen::MatrixBase<T3> &gcov)
{
abilitiesMap.clear();
std::string str = string_snprintf("layer:");
for (int ax=0; ax < gmean.rows(); ++ax) {
if (!abilitiesMask[ax]) continue;
abilitiesMap.push_back(ax);
str += " ";
str += quad->ig.factorNames[ax];
}
str += ":";
itemsMap.clear();
glItemsMap.resize(param.cols(), -1);
for (int ix=0, lx=0; ix < param.cols(); ++ix) {
if (!itemsMask[ix]) continue;
itemsMap.push_back(ix);
glItemsMap[ix] = lx++;
str += string_snprintf(" %d", ix);
}
str += "\n";
//mxLogBig(str);
dataColumns.clear();
dataColumns.reserve(numItems());
totalOutcomes = 0;
for (int ix=0; ix < numItems(); ++ix) {
int outcomes = quad->ig.itemOutcomes[ itemsMap[ix] ];
itemOutcomes.push_back(outcomes);
cumItemOutcomes.push_back(totalOutcomes);
totalOutcomes += outcomes;
dataColumns.push_back(quad->ig.dataColumns[ itemsMap[ix] ]);
}
Eigen::VectorXd mean;
Eigen::MatrixXd cov;
globalToLocalDist(gmean, gcov, mean, cov);
if (mean.size() == 0) {
numSpecific = 0;
primaryDims = 0;
maxDims = 1;
totalQuadPoints = 1;
totalPrimaryPoints = 1;
weightTableSize = 1;
return;
}
numSpecific = 0;
if (quad->ig.twotier) detectTwoTier(param, mean, cov);
if (numSpecific) quad->hasBifactorStructure = true;
primaryDims = cov.cols() - numSpecific;
maxDims = primaryDims + (numSpecific? 1 : 0);
totalQuadPoints = 1;
for (int dx=0; dx < maxDims; dx++) {
totalQuadPoints *= quad->gridSize;
}
totalPrimaryPoints = totalQuadPoints;
weightTableSize = totalQuadPoints;
if (numSpecific) {
totalPrimaryPoints /= quad->gridSize;
weightTableSize *= numSpecific;
}
}
void ifaGroup::import(SEXP Rlist)
{
SEXP argNames;
Rf_protect(argNames = Rf_getAttrib(Rlist, R_NamesSymbol));
if (Rf_length(Rlist) != Rf_length(argNames)) {
Rf_error("All list elements must be named");
}
std::vector<const char *> dataColNames;
paramRows = -1;
int pmatCols=-1;
int mips = 1;
int dataRows = 0;
SEXP Rmean=0, Rcov=0;
for (int ax=0; ax < Rf_length(Rlist); ++ax) {
const char *key = R_CHAR(STRING_ELT(argNames, ax));
SEXP slotValue = VECTOR_ELT(Rlist, ax);
if (strEQ(key, "spec")) {
importSpec(slotValue);
} else if (strEQ(key, "param")) {
if (!Rf_isReal(slotValue)) Rf_error("'param' must be a numeric matrix of item parameters");
param = REAL(slotValue);
getMatrixDims(slotValue, ¶mRows, &pmatCols);
SEXP dimnames;
Rf_protect(dimnames = Rf_getAttrib(slotValue, R_DimNamesSymbol));
if (!Rf_isNull(dimnames) && Rf_length(dimnames) == 2) {
SEXP names;
Rf_protect(names = VECTOR_ELT(dimnames, 0));
int nlen = Rf_length(names);
factorNames.resize(nlen);
for (int nx=0; nx < nlen; ++nx) {
factorNames[nx] = CHAR(STRING_ELT(names, nx));
}
Rf_protect(names = VECTOR_ELT(dimnames, 1));
nlen = Rf_length(names);
itemNames.resize(nlen);
for (int nx=0; nx < nlen; ++nx) {
itemNames[nx] = CHAR(STRING_ELT(names, nx));
}
}
} else if (strEQ(key, "mean")) {
Rmean = slotValue;
if (!Rf_isReal(slotValue)) Rf_error("'mean' must be a numeric vector or matrix");
mean = REAL(slotValue);
} else if (strEQ(key, "cov")) {
Rcov = slotValue;
if (!Rf_isReal(slotValue)) Rf_error("'cov' must be a numeric matrix");
cov = REAL(slotValue);
} else if (strEQ(key, "data")) {
Rdata = slotValue;
dataRows = Rf_length(VECTOR_ELT(Rdata, 0));
SEXP names;
Rf_protect(names = Rf_getAttrib(Rdata, R_NamesSymbol));
int nlen = Rf_length(names);
dataColNames.reserve(nlen);
for (int nx=0; nx < nlen; ++nx) {
dataColNames.push_back(CHAR(STRING_ELT(names, nx)));
}
Rf_protect(dataRowNames = Rf_getAttrib(Rdata, R_RowNamesSymbol));
} else if (strEQ(key, "weightColumn")) {
if (Rf_length(slotValue) != 1) {
Rf_error("You can only have one weightColumn");
}
weightColumnName = CHAR(STRING_ELT(slotValue, 0));
} else if (strEQ(key, "qwidth")) {
qwidth = Rf_asReal(slotValue);
} else if (strEQ(key, "qpoints")) {
qpoints = Rf_asInteger(slotValue);
} else if (strEQ(key, "minItemsPerScore")) {
mips = Rf_asInteger(slotValue);
} else {
// ignore
}
}
learnMaxAbilities();
if (maxAbilities < (int) factorNames.size())
factorNames.resize(maxAbilities);
if (!factorNames.size()) {
factorNames.reserve(maxAbilities);
const int SMALLBUF = 10;
char buf[SMALLBUF];
for (int sx=0; sx < maxAbilities; ++sx) {
snprintf(buf, SMALLBUF, "s%d", sx+1);
factorNames.push_back(CHAR(Rf_mkChar(buf)));
}
}
if (Rmean) {
if (Rf_isMatrix(Rmean)) {
int nrow, ncol;
getMatrixDims(Rmean, &nrow, &ncol);
if (!(nrow * ncol == maxAbilities && (nrow==1 || ncol==1))) {
Rf_error("mean must be a column or row matrix of length %d", maxAbilities);
}
} else {
if (Rf_length(Rmean) != maxAbilities) {
Rf_error("mean must be a vector of length %d", maxAbilities);
}
}
verifyFactorNames(Rmean, "mean");
}
if (Rcov) {
if (Rf_isMatrix(Rcov)) {
int nrow, ncol;
getMatrixDims(Rcov, &nrow, &ncol);
if (nrow != maxAbilities || ncol != maxAbilities) {
Rf_error("cov must be %dx%d matrix", maxAbilities, maxAbilities);
}
} else {
if (Rf_length(Rcov) != 1) {
Rf_error("cov must be %dx%d matrix", maxAbilities, maxAbilities);
}
}
verifyFactorNames(Rcov, "cov");
}
setLatentDistribution(maxAbilities, mean, cov);
setMinItemsPerScore(mips);
if (numItems() != pmatCols) {
Rf_error("item matrix implies %d items but spec is length %d",
pmatCols, numItems());
}
if (Rdata) {
if (itemNames.size() == 0) Rf_error("Item matrix must have colnames");
for (int ix=0; ix < numItems(); ++ix) {
bool found=false;
for (int dc=0; dc < int(dataColNames.size()); ++dc) {
if (strEQ(itemNames[ix], dataColNames[dc])) {
SEXP col = VECTOR_ELT(Rdata, dc);
if (!Rf_isFactor(col)) {
if (TYPEOF(col) == INTSXP) {
Rf_error("Column '%s' is an integer but "
"not an ordered factor",
dataColNames[dc]);
} else {
Rf_error("Column '%s' is of type %s; expecting an "
"ordered factor (integer)",
dataColNames[dc], Rf_type2char(TYPEOF(col)));
}
}
dataColumns.push_back(INTEGER(col));
found=true;
break;
}
}
if (!found) {
Rf_error("Cannot find item '%s' in data", itemNames[ix]);
}
}
if (weightColumnName) {
for (int dc=0; dc < int(dataColNames.size()); ++dc) {
if (strEQ(weightColumnName, dataColNames[dc])) {
SEXP col = VECTOR_ELT(Rdata, dc);
if (TYPEOF(col) != REALSXP) {
Rf_error("Column '%s' is of type %s; expecting type numeric (double)",
dataColNames[dc], Rf_type2char(TYPEOF(col)));
}
rowWeight = REAL(col);
break;
}
}
if (!rowWeight) {
Rf_error("Cannot find weight column '%s'", weightColumnName);
}
}
rowMap.reserve(dataRows);
for (int rx=0; rx < dataRows; ++rx) rowMap.push_back(rx);
}
detectTwoTier();
sanityCheck();
if (paramRows < impliedParamRows) {
Rf_error("At least %d rows are required in the item parameter matrix, only %d found",
impliedParamRows, paramRows);
}
Eigen::Map<Eigen::MatrixXd> fullCov(cov, maxAbilities, maxAbilities);
int dense = maxAbilities - numSpecific;
Eigen::MatrixXd priCov = fullCov.block(0, 0, dense, dense);
Eigen::VectorXd sVar = fullCov.diagonal().tail(numSpecific);
quad.setup(qwidth, qpoints, mean, priCov, sVar);
}
