MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/09/02 through 02/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 14 257 271
Davis 49 7 56
Irvine 52 0 52
Los Angeles 5 86 91
Riverside 4 0 4
San Diego 37 171 208
San Francisco 1 0 1
Santa Barbara 7 13 20
Santa Cruz 5 40 45
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 22 22
Other-Network UC n/a 381 381
_______ ______ _____
174 1,017 1,191
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 765 1,968 16,446
INS90 178 319 1,169
INS85 112 203 1,438
INS80 67 114 686
INS69 69 158 1,125
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 20 51 659
2-4 a.m. 26 54 465
4-6 a.m. 25 54 253
6-8 a.m. 51 143 601
8-10 a.m. 140 324 1,821
10-12 a.m. 281 574 4,725
12-2 p.m. 137 365 2,565
2-4 p.m. 221 488 4,182
4-6 p.m. 163 372 2,871
6-8 p.m. 69 204 1,722
8-10 p.m. 43 102 787
10-12 p.m. 15 31 213
__________ __________ __________ _________________
Total: 1,191 2,762 20,864
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 29 595 624
Davis 133 8 141
Irvine 129 0 129
Los Angeles 4 208 212
Riverside 19 0 19
San Diego 88 467 555
San Francisco 2 0 2
Santa Barbara 8 18 26
Santa Cruz 11 94 105
Lawrence Berkeley 0 65 65
Lawrence Livermore 0 53 53
Los Alamos 0 0 0
Other - UC 0 77 77
Other-Network UC n/a 754 754
_______ ______ _____
423 2,339 2,762
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 145 5,962 6,107
Davis 1,237 19 1,256
Irvine 941 0 941
Los Angeles 24 1,773 1,797
Riverside 71 0 71
San Diego 671 3,450 4,121
San Francisco 0 0 0
Santa Barbara 22 165 187
Santa Cruz 4 1,113 1,117
Lawrence Berkeley 0 308 308
Lawrence Livermore 0 509 509
Los Alamos 0 0 0
Other - UC 0 412 412
Other-Network UC n/a 4,038 4,038
_______ ______ _____
3,115 17,749 20,864
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.3
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) 9:04
Average session length (minutes:seconds) 15:55
Longest session recorded (minutes:seconds) 452:18
Average number of searches completed per session 2.3
Retrievals per search - median 5.0
Retrievals per search - average 217.3
Retrievals per search - standard deviation 1633.0
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 6.3%
Percent of long searches completed
(includes partial results) 75.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,496 32.4%
DISPLAY (excluding automatic displays) 2,724 35.4%
BROWSE 6 0.1%
SELECT 0 0.0%
HELP 42 0.5%
EXPLAIN 89 1.2%
SET/RESET 688 8.9%
SHOW 30 0.4%
ADD ON (AND, OR, AND NOT) 266 3.5%
LOGON or LOGOFF 1,030 13.4%
COMMENT 0 0.0%
SAVE 56 0.7%
USE 2 0.0%
OTHER 278 3.6%
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 1,272 45.1% 296 23.3% 16 66.5 215.5
TITLE WORD 533 18.9% 233 43.7% 4 54.2 173.2
EXACT TITLE 30 1.1% 23 76.7% 2 4.3 5.1
JOURNAL 101 3.6% 40 39.6% 7 874.6 3280.1
EXACT JOURNAL 33 1.2% 22 66.7% 199 471.1 565.5
SUBJECT 155 5.5% 37 23.9% 46 685.4 2040.1
EXACT SUBJECT 3 0.1% 1 33.3% 16 16.0 5.7
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 2 0.1% 0 0.0% 7,543 7543.0 9964.5
KEYWORD 463 16.4% 74 16.0% 26 839.0 3759.1
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 7 0.2% 1 14.3% 21 189.5 388.8
DATE 76 2.7% 20 26.3% 30 375.9 710.1
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. 18 0.6% 7 38.9% 33 84.8 136.4
CONFERENCE 2 0.1% 1 50.0% 643 643.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 26 0.9% 8 30.8% 119 500.3 1201.4
ISSN 3 0.1% 3 100% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 110 110.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 89 3.2% 10 11.2% 8 58.1 216.8
EXACT PE 6 0.2% 0 0.0% 3 12.3 20.3
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% 29 29.0 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 354 14.4% 115 32.5% 6 114.5 385.8
Single 2,102 85.6% 539 25.6% 21 348.7 2127.9
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 6 100% 2 33.3% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.3%
SHORT 81.1%
LONG 3.2%
TAGS 0.0%
FIELDS 4.1%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 5.9%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 43.6%
2. First word of command is invalid 26.6%
3. FIND command with invalid index name 8.2%
4. Valid command at an inappropriate time 2.5%
5. Invalid SET DB INS command issued 2.2%
6. DISPLAY command contains invalid word 2.0%
7. PS command - no previous screen 1.9%
8. DISPLAY command - no FIND results 1.4%
9. Search term missing from search command 1.2%
10. Add-on search, no index name after verb 1.1%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.6%
2. INSPEC DATABASES 12.4%
3. GUIDE (INSPEC DBS) 10.1%
4. INSPEC BACKFILES 6.7%
5. Unrecognized term 6.7%
6. INDEXES (INSPEC DBS) 4.5%
7. 1217 4.5%
8. DATABASES 4.5%
9. LOCATE (INS/PSY DBS) 3.4%
10. DISPLAY (INS/PSY DBS) 3.4%
11. All others 29.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.2%
2. First word of command is invalid 9.9%
3. FIND command with invalid index name 9.9%
4. DISPLAY command-first of >1 screen 7.6%
5. NS command - no next screen 6.9%
6. FIND command with zero results 6.9%
7. 143 4.6%
8. DISPLAY command-complete in one screen 4.6%
9. DISPLAY command - last of >1 screen 3.1%
10. 850 3.1%
11. All others 15.3%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. MAIL STATUS 30.0%
3. INSPEC NEWS 3.3%
4. MAIL SETTINGS 3.3%
5. SEARCH 3.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)