README: add Kaldi reader section

README

@@ -7,6 +7,9 @@
 	MERL, Sabanci University
 	email: haerdogan@sabanciuniv.edu
 
+    Yu Zhang, Leo Liu
+    CSAIL, Massachusetts Institute of Technology
+
 == Preeliminaries ==
 To build the cpu version, you have to install intel MKL blas library or ACML library first. Note that ACML is free, where MKL may not be.
 
@@ -42,3 +45,52 @@ All executables are in bin/ directory:
 
 To run the executable, make sure bin/ is in your ${LD_LIBRARY_PATH}, if not, running cn.exe will fail when cn.exe tries to link the corresponding reader. Once it's done, run in command line:
 	./cn.exe configFile=${your config file}
+
+
+== Kaldi Reader ==
+
+The features section is different:
+
+features=[
+    dim=
+    rx=
+    scpFile=
+    featureTransform=
+]
+
+rx is a text file which contains:
+
+    one Kaldi feature rxspecifier readable by RandomAccessBaseFloatMatrixReader.
+    'ark:' specifiers don't work; only 'scp:' specifiers work.
+
+scpFile is a text file generated by running:
+
+    feat-to-len FEATURE_RXSPECIFIER_FROM_ABOVE ark,t:- > TEXT_FILE_NAME
+
+    scpFile should contain one line per utterance.
+
+    If you want to run with fewer utterances, just shorten this file.
+    (It will load the feature rxspecifier but ignore utterances not present in scpFile).
+
+featureTransform is the name of a Kaldi feature transform file:
+    
+    Kaldi feature transform files are used for stacking / applying transforms to features.
+
+    An empty string (if permitted by the config file reader?) or the special string: NO_FEATURE_TRANSFORM
+    says to ignore this option.
+
+********** Labels **********
+
+The labels section is also different.
+
+labels=[
+    mlfFile=
+    labelDim=
+    labelMappingFile=
+]
+
+Only difference is mlfFile. mlfFile is a different format now. It is a text file which contains:
+
+    one Kaldi label rxspecifier readable by Kaldi's copy-post binary.
+
+