| Presentation | 2007/7/17 Extraction and Analysis of Basis Expressions that Indicate Economic Trends Hiroki SAKAJI, Hiroyuki SAKAI, Shigeru MASUYAMA, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this research, we propose a method to automatically extract basis expressions that indicate economic trends from newspaper articles by using a statistical method. We also propose a method to classify them into positive expressions that indicate upbeat, and negative expressions that indicate downturn in economy. It is important to foresee the economic trends for companies, governments and investors to forecast stock places and sales of goods. Therefore, we considered that the companies, governments and investors are able to forecast economic trends by using basis expressions extracted from newspaper articles concerning economic trends. In this time, we extracted basis expressions, and classified them into positive expressions or negative expressions as information to forecast economic trends. We evaluated our methods using NIKKEI newspaper articles from 1990 to 2005. The results showed that the method to extract basis expressions, attained presicion 71.43% and recall 33.33%. The classification method attained F-measure with positive expressions 0.695, and F-measure with negative expressions 0.849. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Economy / Economic Trends / Expression Extraction / Expression Classification |
| Paper # | NLC2007-26 |
| Date of Issue |
| Conference Information | |
| Committee | NLC |
|---|---|
| Conference Date | 2007/7/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Natural Language Understanding and Models of Communication (NLC) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Extraction and Analysis of Basis Expressions that Indicate Economic Trends |
| Sub Title (in English) | |
| Keyword(1) | Economy |
| Keyword(2) | Economic Trends |
| Keyword(3) | Expression Extraction |
| Keyword(4) | Expression Classification |
| 1st Author's Name | Hiroki SAKAJI |
| 1st Author's Affiliation | Toyohashi University of Technology() |
| 2nd Author's Name | Hiroyuki SAKAI |
| 2nd Author's Affiliation | Toyohashi University of Technology |
| 3rd Author's Name | Shigeru MASUYAMA |
| 3rd Author's Affiliation | Toyohashi University of Technology |
| Date | 2007/7/17 |
| Paper # | NLC2007-26 |
| Volume (vol) | vol.107 |
| Number (no) | 158 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |