MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/22/02 through 06/28/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 145 148
Davis 31 0 31
Irvine 46 0 46
Los Angeles 0 74 74
Riverside 0 5 5
San Diego 29 64 93
San Francisco 2 0 2
Santa Barbara 2 20 22
Santa Cruz 0 10 10
Lawrence Berkeley 0 28 28
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 122 122
_______ ______ _____
113 501 614
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 435 1,221 11,972
INS90 72 119 788
INS85 44 76 581
INS80 33 47 293
INS69 30 71 874
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 20 292
2-4 a.m. 7 20 70
4-6 a.m. 7 13 231
6-8 a.m. 29 63 650
8-10 a.m. 83 214 1,457
10-12 a.m. 121 268 2,085
12-2 p.m. 63 171 1,709
2-4 p.m. 101 235 2,050
4-6 p.m. 113 262 3,261
6-8 p.m. 38 148 1,703
8-10 p.m. 31 70 813
10-12 p.m. 10 50 187
__________ __________ __________ _________________
Total: 614 1,534 14,508
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 3 333 336
Davis 60 0 60
Irvine 177 0 177
Los Angeles 0 140 140
Riverside 0 38 38
San Diego 53 207 260
San Francisco 5 0 5
Santa Barbara 2 82 84
Santa Cruz 0 23 23
Lawrence Berkeley 0 68 68
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 0 84 84
Other-Network UC n/a 246 246
_______ ______ _____
300 1,234 1,534
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 4,339 4,339
Davis 350 0 350
Irvine 3,504 0 3,504
Los Angeles 0 1,026 1,026
Riverside 0 30 30
San Diego 296 1,461 1,757
San Francisco 16 0 16
Santa Barbara 5 519 524
Santa Cruz 0 220 220
Lawrence Berkeley 0 552 552
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 0 713 713
Other-Network UC n/a 1,442 1,442
_______ ______ _____
4,171 10,337 14,508
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.7
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) 10:37
Average session length (minutes:seconds) 19:07
Longest session recorded (minutes:seconds) 554:53
Average number of searches completed per session 2.5
Retrievals per search - median 9.0
Retrievals per search - average 438.7
Retrievals per search - standard deviation 4286.0
Percent of searches completed with 0 results 21.3%
Percent of searches entered that are long 5.3%
Percent of long searches completed
(includes partial results) 72.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,403 29.2%
DISPLAY (excluding automatic displays) 2,044 42.5%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 20 0.4%
EXPLAIN 41 0.9%
SET/RESET 312 6.5%
SHOW 8 0.2%
ADD ON (AND, OR, AND NOT) 131 2.7%
LOGON or LOGOFF 649 13.5%
COMMENT 0 0.0%
SAVE 12 0.2%
USE 1 0.0%
OTHER 186 3.9%
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 705 45.1% 136 19.3% 19 100.0 531.1
TITLE WORD 242 15.5% 72 29.8% 5 53.9 135.6
EXACT TITLE 16 1.0% 7 43.8% 1 5.4 7.5
JOURNAL 77 4.9% 23 29.9% 16 284.3 1002.2
EXACT JOURNAL 11 0.7% 7 63.6% 41 320.0 585.2
SUBJECT 46 2.9% 11 23.9% 13 139.3 442.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 322 20.6% 64 19.9% 40 2179.9 10160.6
SUBFILE 1 0.1% 1 100% 0 0.0 0.0
FORM 7 0.4% 2 28.6% 9 36.0 49.5
DATE 9 0.6% 2 22.2% 20 52.3 56.5
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. 66 4.2% 13 19.7% 65 138.5 264.0
CONFERENCE 2 0.1% 0 0.0% 751 750.5 126.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 14 0.9% 0 0.0% 9 30.2 39.3
ISSN 0 0.0% 0 0.0% 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 39 2.5% 4 10.3% 5 100.6 361.6
EXACT PE 5 0.3% 0 0.0% 10 54.2 104.1
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 0 0.0% 0 0.0% 0 0.0 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 177 12.8% 60 33.9% 9 68.9 191.6
Single 1,205 87.2% 222 18.4% 20 658.2 5298.5
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 2.9%
SHORT 84.2%
LONG 5.0%
TAGS 0.5%
FIELDS 2.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 0.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 53.6%
2. First word of command is invalid 20.8%
3. 167 5.7%
4. FIND command with invalid index name 4.4%
5. Valid command at an inappropriate time 2.0%
6. Invalid SET DB INS command issued 1.5%
7. DISPLAY command - no FIND results 1.3%
8. DISPLAY command contains invalid word 1.3%
9. Search term missing from search command 1.1%
10. Command contains escape or arrow key 1.1%
11. All others 7.1%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 24.4%
2. FIND (INSPEC DBS) 22.0%
3. GUIDE (INSPEC DBS) 14.6%
4. LOCATE (INS/PSY DBS) 7.3%
5. INDEXES (INSPEC DBS) 7.3%
6. DATABASES 7.3%
7. MAIL 4.9%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.9%
9. INSPEC BACKFILES 2.4%
10. I016 2.4%
11. All others 2.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 41.0%
2. DISPLAY command - middle of >1 screen 19.7%
3. First word of command is invalid 8.2%
4. FIND command with zero results 6.6%
5. Multi-index search with zero results 4.9%
6. NS command - no next screen 3.3%
7. FIND command with invalid index name 3.3%
8. DISPLAY command-first of >1 screen 3.3%
9. 850 3.3%
10. Valid command at an inappropriate time 1.6%
11. All others 4.9%
Ten most frequent SHOW requests:
1. MAIL STATUS 37.5%
2. INSPEC NEWS 25.0%
3. HISTORY 25.0%
4. SEARCH 12.5%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)