diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..db52307
Binary files /dev/null and b/.DS_Store differ
diff --git a/bigData/Methods for Cross-Domain Data fusion.pdf b/bigData/Methods for Cross-Domain Data fusion.pdf
new file mode 100644
index 0000000..cd8a42f
Binary files /dev/null and b/bigData/Methods for Cross-Domain Data fusion.pdf differ