MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/08/01 through 09/14/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 218 224
Davis 58 1 59
Irvine 70 0 70
Los Angeles 1 123 124
Riverside 1 2 3
San Diego 27 96 123
San Francisco 4 0 4
Santa Barbara 2 38 40
Santa Cruz 0 12 12
Lawrence Berkeley 0 18 18
Lawrence Livermore 0 21 21
Los Alamos 0 0 0
Other - UC 0 22 22
Other-Network UC n/a 526 526
_______ ______ _____
169 1,077 1,246
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 792 1,797 14,099
INS90 190 317 1,998
INS85 95 165 1,377
INS80 80 148 1,499
INS69 89 229 1,492
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 39 367
2-4 a.m. 27 69 582
4-6 a.m. 10 17 96
6-8 a.m. 54 102 471
8-10 a.m. 147 273 1,340
10-12 a.m. 269 522 3,577
12-2 p.m. 168 328 2,809
2-4 p.m. 236 616 3,603
4-6 p.m. 193 460 4,048
6-8 p.m. 68 102 1,449
8-10 p.m. 36 77 1,517
10-12 p.m. 13 51 606
__________ __________ __________ _________________
Total: 1,246 2,656 20,465
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25 581 606
Davis 175 2 177
Irvine 187 0 187
Los Angeles 2 231 233
Riverside 6 3 9
San Diego 69 221 290
San Francisco 7 0 7
Santa Barbara 4 82 86
Santa Cruz 0 25 25
Lawrence Berkeley 0 36 36
Lawrence Livermore 0 48 48
Los Alamos 0 0 0
Other - UC 0 97 97
Other-Network UC n/a 855 855
_______ ______ _____
475 2,181 2,656
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 140 5,565 5,705
Davis 1,526 1 1,527
Irvine 2,015 0 2,015
Los Angeles 0 2,556 2,556
Riverside 26 47 73
San Diego 310 2,305 2,615
San Francisco 0 0 0
Santa Barbara 36 669 705
Santa Cruz 0 131 131
Lawrence Berkeley 0 303 303
Lawrence Livermore 0 253 253
Los Alamos 0 0 0
Other - UC 0 540 540
Other-Network UC n/a 4,042 4,042
_______ ______ _____
4,053 16,412 20,465
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 6.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 9:17
Average session length (minutes:seconds) 12:55
Longest session recorded (minutes:seconds) 136:51
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 1462.1
Retrievals per search - standard deviation 24123
Percent of searches completed with 0 results 30.9%
Percent of searches entered that are long 5.0%
Percent of long searches completed
(includes partial results) 76.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,346 31.9%
DISPLAY (excluding automatic displays) 2,360 32.1%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 66 0.9%
EXPLAIN 101 1.4%
SET/RESET 795 10.8%
SHOW 24 0.3%
ADD ON (AND, OR, AND NOT) 310 4.2%
LOGON or LOGOFF 946 12.9%
COMMENT 0 0.0%
SAVE 128 1.7%
USE 2 0.0%
OTHER 283 3.8%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 1,064 41.7% 269 25.3% 17 94.2 387.8
TITLE WORD 569 22.3% 286 50.3% 4 135.7 809.8
EXACT TITLE 13 0.5% 10 76.9% 16 12.3 9.1
JOURNAL 60 2.4% 24 40.0% 322 9468.2 47392.3
EXACT JOURNAL 62 2.4% 46 74.2% 3,081 4000.4 6280.6
SUBJECT 83 3.3% 18 21.7% 24 621.8 2335.1
EXACT SUBJECT 3 0.1% 0 0.0% 8 5654.7 9783.8
THESAURUS 4 0.2% 2 50.0% 6,115 6115.0 8638.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 500 19.6% 86 17.2% 24 3839.8 41439.4
SUBFILE 1 0.0% 0 0.0% 26 26.0 0.0
FORM 13 0.5% 0 0.0% 29 71.0 96.3
DATE 47 1.8% 18 38.3% 21 58.1 93.5
ADDED 10 0.4% 6 60.0% 11 12.0 9.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 18 0.7% 4 22.2% 17 392.4 923.7
CONFERENCE 12 0.5% 7 58.3% 844 1402.4 1572.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 23 0.9% 8 34.8% 12 39.3 49.0
ISSN 3 0.1% 1 33.3% 10,976 10976.0 237.6
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 61 2.4% 9 14.8% 4 38.7 103.4
EXACT PE 4 0.2% 0 0.0% 1 1.8 1.5
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 1 0.0% 0 0.0% 10 10.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 230 9.9% 92 40.0% 8 131.6 1048.8
Single 2,090 90.1% 611 29.2% 19 1474.6 23205.3
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.7%
SHORT 83.7%
LONG 2.4%
TAGS 0.0%
FIELDS 4.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 39.7%
2. First word of command is invalid 26.7%
3. FIND command with invalid index name 5.9%
4. DISPLAY command contains invalid word 4.1%
5. Max. # of ports to a Z39 db are in use 3.7%
6. Search term missing from search command 2.3%
7. Invalid SET DB INS command issued 1.8%
8. PS command - no previous screen 1.6%
9. Add-on search, no index name after verb 1.1%
10. Invalid SET DATABASE command issued 1.0%
11. All others 12.2%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.8%
2. Unrecognized term 11.9%
3. INDEXES (INSPEC DBS) 10.9%
4. GUIDE (INSPEC DBS) 6.9%
5. INSPEC DATABASES 5.9%
6. MAIL 5.0%
7. G124 5.0%
8. INSPEC BACKFILES 5.0%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 5.0%
10. DATABASES 4.0%
11. All others 24.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.6%
2. First word of command is invalid 9.6%
3. FIND command with zero results 9.6%
4. DISPLAY command-first of >1 screen 7.2%
5. DISPLAY command - middle of >1 screen 7.2%
6. DISPLAY command-complete in one screen 5.4%
7. 3 HELP commands issued from same code 4.8%
8. FIND command with invalid index name 3.6%
9. DISPLAY command - last of >1 screen 3.6%
10. NS command - no next screen 3.0%
11. All others 27.5%
Ten most frequent SHOW requests:
1. HISTORY 33.3%
2. SETTINGS (INS/PSY DBS) 20.8%
3. INSPEC NEWS 12.5%
4. GLOSSARY 8.3%
5. SYSTEM NEWS 8.3%
6. SEARCH 8.3%
7. INSPEC LOADING STATISTICS 4.2%
8. MAIL SETTINGS 4.2%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)