MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 10/06/01 through 10/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 289 297
Davis 39 1 40
Irvine 70 0 70
Los Angeles 0 90 90
Riverside 1 4 5
San Diego 36 104 140
San Francisco 4 0 4
Santa Barbara 3 33 36
Santa Cruz 4 16 20
Lawrence Berkeley 0 26 26
Lawrence Livermore 0 42 42
Los Alamos 0 0 0
Other - UC 0 35 35
Other-Network UC n/a 412 412
_______ ______ _____
165 1,052 1,217
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 799 1,668 13,200
INS90 163 288 1,178
INS85 103 173 741
INS80 68 117 1,498
INS69 84 182 1,401
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 29 188
2-4 a.m. 21 44 296
4-6 a.m. 20 47 406
6-8 a.m. 42 91 988
8-10 a.m. 180 306 1,194
10-12 a.m. 211 413 2,280
12-2 p.m. 188 387 2,218
2-4 p.m. 212 376 3,586
4-6 p.m. 174 377 3,645
6-8 p.m. 109 217 1,553
8-10 p.m. 29 88 981
10-12 p.m. 20 53 683
__________ __________ __________ _________________
Total: 1,217 2,428 18,018
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 32 552 584
Davis 92 1 93
Irvine 177 0 177
Los Angeles 0 191 191
Riverside 6 12 18
San Diego 59 239 298
San Francisco 9 0 9
Santa Barbara 6 61 67
Santa Cruz 3 28 31
Lawrence Berkeley 0 80 80
Lawrence Livermore 0 89 89
Los Alamos 0 0 0
Other - UC 0 76 76
Other-Network UC n/a 715 715
_______ ______ _____
384 2,044 2,428
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 195 5,893 6,088
Davis 488 0 488
Irvine 1,570 0 1,570
Los Angeles 0 1,768 1,768
Riverside 6 12 18
San Diego 186 2,705 2,891
San Francisco 101 0 101
Santa Barbara 2 716 718
Santa Cruz 7 59 66
Lawrence Berkeley 0 486 486
Lawrence Livermore 0 285 285
Los Alamos 0 0 0
Other - UC 0 475 475
Other-Network UC n/a 3,064 3,064
_______ ______ _____
2,555 15,463 18,018
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 5.8
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
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Median session length (minutes:seconds) 9:18
Average session length (minutes:seconds) 12:49
Longest session recorded (minutes:seconds) 332:35
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 204.6
Retrievals per search - standard deviation 2332.1
Percent of searches completed with 0 results 28.7%
Percent of searches entered that are long 4.6%
Percent of long searches completed
(includes partial results) 77.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,189 30.4%
DISPLAY (excluding automatic displays) 2,531 35.2%
BROWSE 8 0.1%
SELECT 2 0.0%
HELP 45 0.6%
EXPLAIN 65 0.9%
SET/RESET 720 10.0%
SHOW 20 0.3%
ADD ON (AND, OR, AND NOT) 239 3.3%
LOGON or LOGOFF 1,044 14.5%
COMMENT 0 0.0%
SAVE 47 0.7%
USE 0 0.0%
OTHER 300 4.2%
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 1,098 44.9% 230 20.9% 18 65.6 258.1
TITLE WORD 572 23.4% 282 49.3% 6 163.6 908.6
EXACT TITLE 27 1.1% 15 55.6% 6 53.2 111.9
JOURNAL 36 1.5% 11 30.6% 25 2437.1 7156.5
EXACT JOURNAL 33 1.3% 24 72.7% 203 3728.6 10211.8
SUBJECT 49 2.0% 28 57.1% 6 63.6 155.1
EXACT SUBJECT 3 0.1% 1 33.3% 7 6.5 6.4
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 16 0.7% 1 6.3% 801 821.7 302.9
KEYWORD 411 16.8% 74 18.0% 27 761.1 5529.8
SUBFILE 6 0.2% 0 0.0% 29 46.5 31.0
FORM 8 0.3% 3 37.5% 20 99.0 182.0
DATE 56 2.3% 13 23.2% 5 80.2 181.7
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 41 1.7% 9 21.9% 47 209.9 501.6
CONFERENCE 8 0.3% 1 12.5% 24 270.0 450.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 71 2.9% 13 18.3% 6 35.4 85.1
EXACT PE 11 0.4% 1 9.1% 3 197.6 576.6
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% 13 13.0 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 268 12.3% 84 31.3% 5 63.9 177.6
Single 1,905 87.7% 537 28.2% 21 338.4 3080.7
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 8 100% 1 12.5% 2 2.1 1.1
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 83.7%
LONG 3.4%
TAGS 0.0%
FIELDS 4.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 42.0%
2. First word of command is invalid 26.8%
3. Max. # of ports to a Z39 db are in use 6.2%
4. FIND command with invalid index name 5.6%
5. DISPLAY command contains invalid word 2.8%
6. PS command - no previous screen 2.3%
7. DISPLAY command - no FIND results 1.4%
8. Add-on search, no index name after verb 1.2%
9. SET DB command entered w/o modifier 1.1%
10. Valid command at an inappropriate time 0.8%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 18.5%
2. INSPEC BACKFILES 13.8%
3. FIND (INSPEC DBS) 10.8%
4. GUIDE (INSPEC DBS) 7.7%
5. DATABASES 7.7%
6. INDEXES (INSPEC DBS) 6.2%
7. Unrecognized term 6.2%
8. 1217 4.6%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.1%
10. 1752 3.1%
11. All others 18.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.6%
2. First word of command is invalid 13.6%
3. DISPLAY command - middle of >1 screen 9.1%
4. NS command - no next screen 6.4%
5. Multi-index search with zero results 5.5%
6. FIND command with invalid index name 4.5%
7. FIND command with zero results 4.5%
8. FIND command retrieves >1 book 4.5%
9. DISPLAY command - last of >1 screen 4.5%
10. 275 4.5%
11. All others 19.1%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. SEARCH 15.0%
3. INSPEC NEWS 10.0%
4. SETTINGS (INS/PSY DBS) 5.0%
5. INSPEC LOADING STATISTICS 5.0%
6. SYSTEM NEWS 5.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)