Visible to Intel only — GUID: GUID-13609A32-2BA2-4223-95B2-C8321361CD35
basic_statistics_dense_batch.cpp
column_accessor_homogen.cpp
cor_dense_batch.cpp
cov_dense_batch.cpp
dbscan_brute_force_batch.cpp
df_cls_hist_batch.cpp
df_cls_hist_batch_random.cpp
df_cls_traverse_model.cpp
df_reg_hist_batch.cpp
df_reg_hist_batch_random.cpp
df_reg_traverse_model.cpp
kmeans_init_dense.cpp
kmeans_lloyd_dense_batch.cpp
knn_cls_brute_force_dense_batch.cpp
knn_reg_brute_force_dense_batch.cpp
knn_search_brute_force_dense_batch.cpp
linear_kernel_dense_batch.cpp
linear_regression_dense_batch.cpp
pca_cor_dense_batch.cpp
pca_precomputed_cor_dense_batch.cpp
pca_precomputed_cov_dense_batch.cpp
rbf_kernel_dense_batch.cpp
svm_two_class_thunder_dense_batch.cpp
basic_statistics_dense_batch.cpp
column_accessor_homogen.cpp
connected_components_batch.cpp
cor_dense_batch.cpp
cov_dense_batch.cpp
csr_accessor.cpp
dbscan_brute_force_batch.cpp
df_cls_dense_batch.cpp
df_reg_dense_batch.cpp
directed_graph.cpp
graph_service_functions.cpp
jaccard_batch.cpp
jaccard_batch_app.cpp
kmeans_init_dense.cpp
kmeans_lloyd_dense_batch.cpp
knn_cls_brute_force_dense_batch.cpp
knn_cls_kd_tree_dense_batch.cpp
knn_search_brute_force_dense_batch.cpp
linear_kernel_dense_batch.cpp
linear_regression_dense_batch.cpp
logloss_dense_batch.cpp
louvain_batch.cpp
pca_dense_batch.cpp
pca_precomputed_dense_batch.cpp
polynomial_kernel_dense_batch.cpp
rbf_kernel_dense_batch.cpp
shortest_paths_batch.cpp
sigmoid_kernel_dense_batch.cpp
subgraph_isomorphism_batch.cpp
svm_multi_class_thunder_csr_batch.cpp
svm_multi_class_thunder_dense_batch.cpp
svm_nu_cls_thunder_csr_batch.cpp
svm_nu_cls_thunder_dense_batch.cpp
svm_nu_reg_thunder_csr_batch.cpp
svm_nu_reg_thunder_dense_batch.cpp
svm_reg_thunder_csr_batch.cpp
svm_reg_thunder_dense_batch.cpp
svm_two_class_smo_csr_batch.cpp
svm_two_class_smo_dense_batch.cpp
svm_two_class_thunder_csr_batch.cpp
svm_two_class_thunder_dense_batch.cpp
triangle_counting_batch.cpp
Mathematical Notations
Mathematical Notations
Correlation and Variance-Covariance Matrices
Mathematical Notations
Principal Components Analysis Transform
Singular Value Decomposition
Association Rules
Mathematical Notations
Mathematical Notations
Cholesky Decomposition
QR Decomposition
Outlier Detection
Distance Matrix
Distributions
Engines
Moments of Low Order
Mathematical Notations
Quality Metrics
Sorting
Normalization
Mathematical Notations
Visible to Intel only — GUID: GUID-13609A32-2BA2-4223-95B2-C8321361CD35
CSV data source
Refer to Developer Guide: CSV data source.
Programming Interface
All types and functions in this section are declared in the oneapi::dal::csv namespace and be available via inclusion of the oneapi/dal/io/csv.hpp header file.
enum class read_options : std::uint64_t {
none = 0,
parse_header = 1 << 0
};
constexpr char default_delimiter = ',';
constexpr read_options default_read_options = read_options::none;
class data_source {
public:
data_source(const char *file_name,
char delimiter = default_delimiter,
read_options opts = default_read_options);
data_source(const std::string &file_name,
char delimiter = default_delimiter,
read_options opts = default_read_options);
std::string get_file_name() const;
char get_delimiter() const;
read_options get_read_options() const;
};
classdata_source
data_source(constchar*file_name, chardelimiter=default_delimiter, read_optionsopts=default_read_options)
Creates a new instance of a CSV data source with the given file_name, delimiter and read options opts flag.
data_source(conststd::string&file_name, chardelimiter=default_delimiter, read_optionsopts=default_read_options)
Creates a new instance of a CSV data source with the given file_name, delimiter and read options opts flag.
std::stringfile_name=""
A string that contains the name of the file with the dataset to read.
- Getter
-
std::string get_filename() const
chardelimiter=default_delimiter
A character that represents the delimiter between separate features in the input file.
- Getter
-
char get_delimter() const
read_optionsoptions=default_read_options
Value that stores read options to be applied during reading of the input file. Enabled parse_header option indicates that the first line in the input file is processed as a header record with features names.
- Getter
-
read_options get_read_options() const
Reading oneapi::dal::read<Object>(...)
Args
template <typename Object>
class read_args {
public:
read_args();
};
template<typenameObject>classread_args
read_args()
Creates args for the read operation with the default attribute values.
Operation
oneapi::dal::table is the only supported value of the Object template parameter for read operation with CSV data source.
template<typenameObject,typenameDataSource>Objectread(constDataSource&ds)
- Template Parameters
-
Object – oneDAL object type that is produced as a result of reading from the data source.
DataSource – CSV data source csv::data_source.
Usage example
using namespace oneapi;
const auto data_source = dal::csv::data_source("data.csv", ',');
const auto table = dal::read<dal::table>(data_source);