void CompNovoIdentificationCID::getIdentifications(vector<PeptideIdentification> & pep_ids, const PeakMap & exp)
{
Size count(1);
for (PeakMap::ConstIterator it = exp.begin(); it != exp.end(); ++it, ++count)
{
//cerr << count << "/" << exp.size() << endl;
PeptideIdentification id;
// TODO check if both CID and ETD is present;
PeakSpectrum CID_spec(*it);
id.setMetaValue("RT", it->getRT());
id.setMetaValue("MZ", it->getPrecursors().begin()->getMZ());
subspec_to_sequences_.clear();
permute_cache_.clear();
decomp_cache_.clear();
getIdentification(id, CID_spec);
//cerr << "size_of id=" << id.getHits().size() << endl;
pep_ids.push_back(id);
//++it;
//
//if (count == 10)
//{
//return;
//}
}
return;
}
ExitCodes main_(int, const char **)
{
//-------------------------------------------------------------
// parameter handling
//-------------------------------------------------------------
//input/output files
String in(getStringOption_("in"));
String out(getStringOption_("out"));
//-------------------------------------------------------------
// loading input
//-------------------------------------------------------------
RichPeakMap exp;
MzMLFile f;
f.setLogType(log_type_);
f.load(in, exp);
writeDebug_("Data set contains " + String(exp.size()) + " spectra", 1);
//-------------------------------------------------------------
// calculations
//-------------------------------------------------------------
writeDebug_("Reading model file", 2);
// create model an set the given options
PILISModel * model = new PILISModel();
model->readFromFile(getStringOption_("model_file"));
Param model_param(model->getParameters());
model_param.setValue("upper_mz", getDoubleOption_("model:upper_mz"));
model_param.setValue("lower_mz", getDoubleOption_("model:lower_mz"));
model_param.setValue("charge_directed_threshold", getDoubleOption_("model:charge_directed_threshold"));
model_param.setValue("charge_remote_threshold", getDoubleOption_("model:charge_remote_threshold"));
//model_param.setValue("min_main_ion_intensity", getDoubleOption_("model:min_main_ion_intensity"));
//model_param.setValue("min_loss_ion_intensity", getDoubleOption_("model:min_loss_ion_intensity"));
model_param.setValue("min_y_ion_intensity", getDoubleOption_("model:min_y_ion_intensity"));
model_param.setValue("min_b_ion_intensity", getDoubleOption_("model:min_b_ion_intensity"));
model_param.setValue("min_a_ion_intensity", getDoubleOption_("model:min_a_ion_intensity"));
model_param.setValue("min_y_loss_intensity", getDoubleOption_("model:min_y_loss_intensity"));
model_param.setValue("min_b_loss_intensity", getDoubleOption_("model:min_b_loss_intensity"));
model_param.setValue("charge_loss_factor", getDoubleOption_("model:charge_loss_factor"));
model_param.setValue("visible_model_depth", getIntOption_("model:visible_model_depth"));
model_param.setValue("model_depth", getIntOption_("model:model_depth"));
model_param.setValue("fixed_modifications", getStringOption_("fixed_modifications"));
model->setParameters(model_param);
writeDebug_("Reading sequence db", 2);
// create sequence db
SuffixArrayPeptideFinder * sapf = new SuffixArrayPeptideFinder(getStringOption_("peptide_db_file"), "trypticCompressed");
sapf->setTolerance(getDoubleOption_("precursor_mass_tolerance"));
sapf->setNumberOfModifications(0);
sapf->setUseTags(false);
//exp.resize(50); // TODO
UInt max_charge(3), min_charge(1); // TODO
vector<double> pre_weights;
for (RichPeakMap::Iterator it = exp.begin(); it != exp.end(); ++it)
{
double pre_weight(it->getPrecursors()[0].getMZ());
for (Size z = min_charge; z <= max_charge; ++z)
{
pre_weights.push_back((pre_weight * (double)z) - (double)z);
}
}
sort(pre_weights.begin(), pre_weights.end());
cerr << "Getting candidates from SA...";
vector<vector<pair<pair<String, String>, String> > > candidates;
sapf->getCandidates(candidates, pre_weights);
cerr << "done" << endl;
delete sapf;
map<double, vector<pair<pair<String, String>, String> > > sorted_candidates;
UInt count(0);
for (Size count = 0; count != candidates.size(); ++count)
{
sorted_candidates[pre_weights[count]] = candidates[count];
}
candidates.clear();
// create ProteinIdentification and set the options
PILISIdentification PILIS_id;
PILIS_id.setModel(model);
Param id_param(PILIS_id.getParameters());
id_param.setValue("precursor_mass_tolerance", getDoubleOption_("precursor_mass_tolerance"));
id_param.setValue("max_candidates", getIntOption_("max_pre_candidates"));
// disable evalue scoring, this is done separately to allow for a single id per spectrum
id_param.setValue("use_evalue_scoring", 0);
id_param.setValue("fixed_modifications", getStringOption_("fixed_modifications"));
PILIS_id.setParameters(id_param);
vector<PeptideIdentification> ids;
// perform the ProteinIdentification of the given spectra
UInt no(0);
for (RichPeakMap::Iterator it = exp.begin(); it != exp.end(); ++it, ++no)
{
if (it->getMSLevel() == 0)
{
writeLog_("Warning: MSLevel is 0, assuming MSLevel 2");
it->setMSLevel(2);
}
if (it->getMSLevel() == 2)
{
writeDebug_(String(no) + "/" + String(exp.size()), 1);
PeptideIdentification id;
map<String, UInt> cand;
for (UInt z = min_charge; z <= max_charge; ++z)
{
double pre_weight = (it->getPrecursors()[0].getMZ() * (double)z) - (double)z;
for (vector<pair<pair<String, String>, String> >::const_iterator cit = sorted_candidates[pre_weight].begin(); cit != sorted_candidates[pre_weight].end(); ++cit)
{
String seq = cit->first.second;
if (seq.size() > 39)
{
continue;
}
UInt num_cleavages_sites(0);
for (Size k = 0; k != seq.size(); ++k)
{
if (k != seq.size() - 1)
{
if ((seq[k] == 'K' || seq[k] == 'R') && seq[k + 1] != 'P')
{
++num_cleavages_sites;
}
}
}
if (num_cleavages_sites > 1)
{
continue;
}
cand[seq] = z;
}
}
cerr << "#cand=" << cand.size() << endl;
PILIS_id.getIdentification(cand, id, *it);
id.setMetaValue("RT", it->getRT());
id.setMetaValue("MZ", it->getPrecursors()[0].getMZ());
ids.push_back(id);
if (!id.getHits().empty())
{
cerr << it->getPrecursors()[0].getMZ() << " " << AASequence(id.getHits().begin()->getSequence()).getAverageWeight() << endl;
writeDebug_(id.getHits().begin()->getSequence().toString() + " (z=" + id.getHits().begin()->getCharge() + "), score=" + String(id.getHits().begin()->getScore()), 10);
}
}
}
// perform the PILIS scoring to the spectra
if (!getFlag_("scoring:do_not_use_evalue_scoring"))
{
PILISScoring scoring;
Param scoring_param(scoring.getParameters());
scoring_param.setValue("use_local_scoring", (int)getFlag_("scoring:use_local_scoring"));
scoring_param.setValue("survival_function_bin_size", getIntOption_("scoring:survival_function_bin_size"));
scoring_param.setValue("global_linear_fitting_threshold", getDoubleOption_("scoring:global_linear_fitting_threshold"));
scoring_param.setValue("local_linear_fitting_threshold", getDoubleOption_("scoring:local_linear_fitting_threshold"));
scoring.setParameters(scoring_param);
scoring.getScores(ids);
}
// write the result to the IdentificationData structure for the storing
UInt max_candidates = getIntOption_("max_candidates");
for (Size i = 0; i != ids.size(); ++i)
{
if (ids[i].getHits().size() > max_candidates)
{
vector<PeptideHit> hits = ids[i].getHits();
hits.resize(max_candidates);
ids[i].setHits(hits);
}
}
delete model;
//-------------------------------------------------------------
// writing output
//-------------------------------------------------------------
DateTime now;
now.now();
String date_string;
//now.get(date_string); // @todo Fix it (Andreas)
String identifier("PILIS_" + date_string);
//UInt count(0);
count = 0;
for (RichPeakMap::ConstIterator it = exp.begin(); it != exp.end(); ++it)
{
if (it->getMSLevel() == 2)
{
ids[count].setMetaValue("RT", it->getRT());
ids[count].setMetaValue("MZ", it->getPrecursors()[0].getMZ());
ids[count].setIdentifier(identifier);
ids[count++].setHigherScoreBetter(false);
}
}
// search parameters
ProteinIdentification::SearchParameters search_parameters;
search_parameters.db = getStringOption_("peptide_db_file");
search_parameters.db_version = "";
search_parameters.taxonomy = "";
//search_parameters.charges = getStringOption_("charges");
search_parameters.mass_type = ProteinIdentification::MONOISOTOPIC;
vector<String> fixed_mods;
getStringOption_("fixed_modifications").split(',', fixed_mods);
search_parameters.fixed_modifications = fixed_mods;
search_parameters.enzyme = ProteinIdentification::TRYPSIN;
search_parameters.missed_cleavages = 1;
search_parameters.peak_mass_tolerance = getDoubleOption_("peak_mass_tolerance");
search_parameters.precursor_tolerance = getDoubleOption_("precursor_mass_tolerance");
ProteinIdentification protein_identification;
protein_identification.setDateTime(now);
protein_identification.setSearchEngine("PILIS");
protein_identification.setSearchEngineVersion("beta");
protein_identification.setSearchParameters(search_parameters);
protein_identification.setIdentifier(identifier);
vector<ProteinIdentification> protein_identifications;
protein_identifications.push_back(protein_identification);
IdXMLFile().store(out, protein_identifications, ids);
return EXECUTION_OK;
}
ExitCodes main_(int, const char **)
{
//-------------------------------------------------------------
// parameter handling
//-------------------------------------------------------------
StringList in_spec = getStringList_("in");
StringList out = getStringList_("out");
String in_lib = getStringOption_("lib");
String compare_function = getStringOption_("compare_function");
Int precursor_mass_multiplier = getIntOption_("round_precursor_to_integer");
Real precursor_mass_tolerance = getDoubleOption_("precursor_mass_tolerance");
//Int min_precursor_charge = getIntOption_("min_precursor_charge");
//Int max_precursor_charge = getIntOption_("max_precursor_charge");
Real remove_peaks_below_threshold = getDoubleOption_("filter:remove_peaks_below_threshold");
UInt min_peaks = getIntOption_("filter:min_peaks");
UInt max_peaks = getIntOption_("filter:max_peaks");
Int cut_peaks_below = getIntOption_("filter:cut_peaks_below");
StringList fixed_modifications = getStringList_("fixed_modifications");
StringList variable_modifications = getStringList_("variable_modifications");
Int top_hits = getIntOption_("top_hits");
if (top_hits < -1)
{
writeLog_("top_hits (should be >= -1 )");
return ILLEGAL_PARAMETERS;
}
//-------------------------------------------------------------
// loading input
//-------------------------------------------------------------
if (out.size() != in_spec.size())
{
writeLog_("out (should be as many as input files)");
return ILLEGAL_PARAMETERS;
}
time_t prog_time = time(NULL);
MSPFile spectral_library;
RichPeakMap query, library;
//spectrum which will be identified
MzMLFile spectra;
spectra.setLogType(log_type_);
time_t start_build_time = time(NULL);
//-------------------------------------------------------------
//building map for faster search
//-------------------------------------------------------------
//library containing already identified peptide spectra
vector<PeptideIdentification> ids;
spectral_library.load(in_lib, ids, library);
map<Size, vector<PeakSpectrum> > MSLibrary;
{
RichPeakMap::iterator s;
vector<PeptideIdentification>::iterator i;
ModificationsDB * mdb = ModificationsDB::getInstance();
for (s = library.begin(), i = ids.begin(); s < library.end(); ++s, ++i)
{
DoubleReal precursor_MZ = (*s).getPrecursors()[0].getMZ();
Size MZ_multi = (Size)precursor_MZ * precursor_mass_multiplier;
map<Size, vector<PeakSpectrum> >::iterator found;
found = MSLibrary.find(MZ_multi);
PeakSpectrum librar;
bool variable_modifications_ok = true;
bool fixed_modifications_ok = true;
const AASequence & aaseq = i->getHits()[0].getSequence();
//variable fixed modifications
if (!fixed_modifications.empty())
{
for (Size i = 0; i < aaseq.size(); ++i)
{
const Residue & mod = aaseq.getResidue(i);
for (Size s = 0; s < fixed_modifications.size(); ++s)
{
if (mod.getOneLetterCode() == mdb->getModification(fixed_modifications[s]).getOrigin() && fixed_modifications[s] != mod.getModification())
{
fixed_modifications_ok = false;
break;
}
}
}
}
//variable modifications
if (aaseq.isModified() && (!variable_modifications.empty()))
{
for (Size i = 0; i < aaseq.size(); ++i)
{
if (aaseq.isModified(i))
{
const Residue & mod = aaseq.getResidue(i);
for (Size s = 0; s < variable_modifications.size(); ++s)
{
if (mod.getOneLetterCode() == mdb->getModification(variable_modifications[s]).getOrigin() && variable_modifications[s] != mod.getModification())
{
variable_modifications_ok = false;
break;
}
}
}
}
}
if (variable_modifications_ok && fixed_modifications_ok)
{
PeptideIdentification & translocate_pid = *i;
librar.getPeptideIdentifications().push_back(translocate_pid);
librar.setPrecursors(s->getPrecursors());
//library entry transformation
for (UInt l = 0; l < s->size(); ++l)
{
Peak1D peak;
if ((*s)[l].getIntensity() > remove_peaks_below_threshold)
{
const String & info = (*s)[l].getMetaValue("MSPPeakInfo");
if (info[0] == '?')
{
peak.setIntensity(sqrt(0.2 * (*s)[l].getIntensity()));
}
else
{
peak.setIntensity(sqrt((*s)[l].getIntensity()));
}
peak.setMZ((*s)[l].getMZ());
peak.setPosition((*s)[l].getPosition());
librar.push_back(peak);
}
}
if (found != MSLibrary.end())
{
found->second.push_back(librar);
}
else
{
vector<PeakSpectrum> tmp;
tmp.push_back(librar);
MSLibrary.insert(make_pair(MZ_multi, tmp));
}
}
}
}
time_t end_build_time = time(NULL);
cout << "Time needed for preprocessing data: " << (end_build_time - start_build_time) << "\n";
//compare function
PeakSpectrumCompareFunctor * comparor = Factory<PeakSpectrumCompareFunctor>::create(compare_function);
//-------------------------------------------------------------
// calculations
//-------------------------------------------------------------
DoubleReal score;
StringList::iterator in, out_file;
for (in = in_spec.begin(), out_file = out.begin(); in < in_spec.end(); ++in, ++out_file)
{
time_t start_time = time(NULL);
spectra.load(*in, query);
//Will hold valuable hits
vector<PeptideIdentification> peptide_ids;
vector<ProteinIdentification> protein_ids;
// Write parameters to ProteinIdentifcation
ProteinIdentification prot_id;
//Parameters of identificaion
prot_id.setIdentifier("test");
prot_id.setSearchEngineVersion("SpecLibSearcher");
prot_id.setDateTime(DateTime::now());
prot_id.setScoreType(compare_function);
ProteinIdentification::SearchParameters searchparam;
searchparam.precursor_tolerance = precursor_mass_tolerance;
prot_id.setSearchParameters(searchparam);
/***********SEARCH**********/
for (UInt j = 0; j < query.size(); ++j)
{
//Set identifier for each identifications
PeptideIdentification pid;
pid.setIdentifier("test");
pid.setScoreType(compare_function);
ProteinHit pr_hit;
pr_hit.setAccession(j);
prot_id.insertHit(pr_hit);
//RichPeak1D to Peak1D transformation for the compare function query
PeakSpectrum quer;
bool peak_ok = true;
query[j].sortByIntensity(true);
DoubleReal min_high_intensity = 0;
if (query[j].empty() || query[j].getMSLevel() != 2)
{
continue;
}
if (query[j].getPrecursors().empty())
{
writeLog_("Warning MS2 spectrum without precursor information");
continue;
}
min_high_intensity = (1 / cut_peaks_below) * query[j][0].getIntensity();
query[j].sortByPosition();
for (UInt k = 0; k < query[j].size() && k < max_peaks; ++k)
{
if (query[j][k].getIntensity() > remove_peaks_below_threshold && query[j][k].getIntensity() >= min_high_intensity)
{
Peak1D peak;
peak.setIntensity(sqrt(query[j][k].getIntensity()));
peak.setMZ(query[j][k].getMZ());
peak.setPosition(query[j][k].getPosition());
quer.push_back(peak);
}
}
if (quer.size() >= min_peaks)
{
peak_ok = true;
}
else
{
peak_ok = false;
}
DoubleReal query_MZ = query[j].getPrecursors()[0].getMZ();
if (peak_ok)
{
bool charge_one = false;
Int percent = (Int) Math::round((query[j].size() / 100.0) * 3.0);
Int margin = (Int) Math::round((query[j].size() / 100.0) * 1.0);
for (vector<RichPeak1D>::iterator peak = query[j].end() - 1; percent >= 0; --peak, --percent)
{
if (peak->getMZ() < query_MZ)
{
break;
}
}
if (percent > margin)
{
charge_one = true;
}
Real min_MZ = (query_MZ - precursor_mass_tolerance) * precursor_mass_multiplier;
Real max_MZ = (query_MZ + precursor_mass_tolerance) * precursor_mass_multiplier;
for (Size mz = (Size)min_MZ; mz <= ((Size)max_MZ) + 1; ++mz)
{
map<Size, vector<PeakSpectrum> >::iterator found;
found = MSLibrary.find(mz);
if (found != MSLibrary.end())
{
vector<PeakSpectrum> & library = found->second;
for (Size i = 0; i < library.size(); ++i)
{
Real this_MZ = library[i].getPrecursors()[0].getMZ() * precursor_mass_multiplier;
if (this_MZ >= min_MZ && max_MZ >= this_MZ && ((charge_one == true && library[i].getPeptideIdentifications()[0].getHits()[0].getCharge() == 1) || charge_one == false))
{
PeptideHit hit = library[i].getPeptideIdentifications()[0].getHits()[0];
PeakSpectrum & librar = library[i];
//Special treatment for SpectraST score as it computes a score based on the whole library
if (compare_function == "SpectraSTSimilarityScore")
{
SpectraSTSimilarityScore * sp = static_cast<SpectraSTSimilarityScore *>(comparor);
BinnedSpectrum quer_bin = sp->transform(quer);
BinnedSpectrum librar_bin = sp->transform(librar);
score = (*sp)(quer, librar); //(*sp)(quer_bin,librar_bin);
double dot_bias = sp->dot_bias(quer_bin, librar_bin, score);
hit.setMetaValue("DOTBIAS", dot_bias);
}
else
{
if (compare_function == "CompareFouriertransform")
{
CompareFouriertransform * ft = static_cast<CompareFouriertransform *>(comparor);
ft->transform(quer);
ft->transform(librar);
}
score = (*comparor)(quer, librar);
}
DataValue RT(library[i].getRT());
DataValue MZ(library[i].getPrecursors()[0].getMZ());
hit.setMetaValue("RT", RT);
hit.setMetaValue("MZ", MZ);
hit.setScore(score);
hit.addProteinAccession(pr_hit.getAccession());
pid.insertHit(hit);
}
}
}
}
}
pid.setHigherScoreBetter(true);
pid.sort();
if (compare_function == "SpectraSTSimilarityScore")
{
if (!pid.empty() && !pid.getHits().empty())
{
vector<PeptideHit> final_hits;
final_hits.resize(pid.getHits().size());
SpectraSTSimilarityScore * sp = static_cast<SpectraSTSimilarityScore *>(comparor);
Size runner_up = 1;
for (; runner_up < pid.getHits().size(); ++runner_up)
{
if (pid.getHits()[0].getSequence().toUnmodifiedString() != pid.getHits()[runner_up].getSequence().toUnmodifiedString() || runner_up > 5)
{
break;
}
}
double delta_D = sp->delta_D(pid.getHits()[0].getScore(), pid.getHits()[runner_up].getScore());
for (Size s = 0; s < pid.getHits().size(); ++s)
{
final_hits[s] = pid.getHits()[s];
final_hits[s].setMetaValue("delta D", delta_D);
final_hits[s].setMetaValue("dot product", pid.getHits()[s].getScore());
final_hits[s].setScore(sp->compute_F(pid.getHits()[s].getScore(), delta_D, pid.getHits()[s].getMetaValue("DOTBIAS")));
//final_hits[s].removeMetaValue("DOTBIAS");
}
pid.setHits(final_hits);
pid.sort();
pid.setMetaValue("MZ", query[j].getPrecursors()[0].getMZ());
pid.setMetaValue("RT", query_MZ);
}
}
if (top_hits != -1 && (UInt)top_hits < pid.getHits().size())
{
vector<PeptideHit> hits;
hits.resize(top_hits);
for (Size i = 0; i < (UInt)top_hits; ++i)
{
hits[i] = pid.getHits()[i];
}
pid.setHits(hits);
}
peptide_ids.push_back(pid);
}
protein_ids.push_back(prot_id);
//-------------------------------------------------------------
// writing output
//-------------------------------------------------------------
IdXMLFile id_xml_file;
id_xml_file.store(*out_file, protein_ids, peptide_ids);
time_t end_time = time(NULL);
cout << "Search time: " << difftime(end_time, start_time) << " seconds for " << *in << "\n";
}
time_t end_time = time(NULL);
cout << "Total time: " << difftime(end_time, prog_time) << " secconds\n";
return EXECUTION_OK;
}
