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07</15/2016 - Refining hazard model: revising variables used, comparing Cox Proportional Hazard and Lognormal Accelerated Failure Time modelsonlyinclude>
07/18/2016 - Cataloged SQL tables, revised STATA script (STATAdatasetup2.do) to include ratios, replace cashflow with ebitda, and filter out firms smaller than $50 million===Spring 2017===
0702/1902/2016 2017 - Investigated baseline hazard of Cox Proportional Hazard model. Compared to Lognormal and Loglogistic Accelerated Failure Time models to try to predict hazard rate Planned immediate next steps for LBO project; fixed bug in matching code (matchpair indices not just hazard ratiobeing stored correctly) 07/20/2016 - Adjusted dataset to filter out firms that are small (<$40m) or not listed in major exchanges (AMEX, NYSE, NASDAQ). Consulted Brian on descriptive statistics of dataset. 07/21/2016 - Investigated negative ebitda ratios.
07/22/===Fall 2016 - Performed further testing of hazard model. Ran preliminary matching analysis using patent flow data. 07/25/2016 - Cleaned data setup do file. Organized list of data problems to consult with Ed.===
02===Summer 2016=== 07/0215/2017 2016 - Planned immediate next steps for LBO project; fixed bug Refining hazard model: revising variables used, comparing Cox Proportional Hazard and Lognormal Accelerated Failure Time models 07/18/2016 - Cataloged SQL tables, revised STATA script (STATAdatasetup2.do) to include ratios, replace cashflow with ebitda, and filter out firms smaller than $50 million 07/19/2016 - Investigated baseline hazard of Cox Proportional Hazard model. Compared to Lognormal and Loglogistic Accelerated Failure Time models to try to predict hazard rate (not just hazard ratio) 07/20/2016 - Adjusted dataset to filter out firms that are small (<$40m) or not listed in matching code major exchanges (matchpair indices not being stored correctlyAMEX, NYSE, NASDAQ). Consulted Brian on descriptive statistics of dataset. 07/21/2016 - Investigated negative ebitda ratios. 07/22/2016 - Performed further testing of hazard model. Ran preliminary matching analysis using patent flow data. 07/25/2016 - Cleaned data setup do file. Organized list of data problems to consult with Ed.
no edit summary
===Fall 2017===<onlyinclude>
[[James Chen]] [[Work Logs]] [[James Chen (Work Log)|(log page)]]
09/06/2016 - Discussed workload for the week, plan for project going forward with Ed and Jake.
11/18/2016 - Minor bugfixes for STATA code (got winsorized variables working consistently); began working on patent start/end table
[[Category:Work Log]]
