Update multi_species_genomes.py

multi_species_genomes.py

@@ -37,7 +37,11 @@ _CITATION = """\
 
 # You can copy an official description
 _DESCRIPTION = """\
-Genomes from 850 different species.
+Datset made of diverse genomes available on NCBI and coming from ~850 different species. 
+Test and validation are made of 50 species each. The rest of the genomes are used for training.
+Default configuration "6kbp" yields chunks of 6.2kbp (100bp overlap on each side). Similarly,
+the "12kbp"configuration yields chunks of 12.2kbp. The chunks of DNA are cleaned and processed so that
+they can only contain the letters A, T, C, G and N.
 """
 
 _HOMEPAGE = "https://www.ncbi.nlm.nih.gov/"
@@ -111,6 +115,7 @@ class MultiSpeciesGenomes(datasets.GeneratorBasedBuilder):
                 "description": datasets.Value("string"),
                 "start_pos": datasets.Value("int32"),
                 "end_pos": datasets.Value("int32"),
+                "fasta_url": datasets.Value("string")
             }
         )
         return datasets.DatasetInfo(
@@ -174,6 +179,7 @@ class MultiSpeciesGenomes(datasets.GeneratorBasedBuilder):
                             'sequence': chunk_sequence,
                             'description': description,
                             'start_pos': start_pos,
-                            'end_pos': end_pos
+                            'end_pos': end_pos.
+                            'fasta_url': file + '.fna.gz'
                         }
                         key += 1