MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/16/02 through 03/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 189 191
Davis 61 1 62
Irvine 46 0 46
Los Angeles 0 73 73
Riverside 0 1 1
San Diego 25 111 136
San Francisco 0 0 0
Santa Barbara 0 27 27
Santa Cruz 0 15 15
Lawrence Berkeley 0 25 25
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 2 11 13
Other-Network UC n/a 211 211
_______ ______ _____
136 670 806
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 535 1,236 10,578
INS90 86 174 948
INS85 70 132 569
INS80 53 101 373
INS69 62 135 988
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 52 186
2-4 a.m. 5 11 116
4-6 a.m. 12 25 154
6-8 a.m. 31 71 654
8-10 a.m. 106 227 1,772
10-12 a.m. 178 371 3,266
12-2 p.m. 102 195 1,248
2-4 p.m. 160 434 2,166
4-6 p.m. 96 198 1,778
6-8 p.m. 52 79 1,084
8-10 p.m. 18 50 477
10-12 p.m. 29 65 555
__________ __________ __________ _________________
Total: 806 1,778 13,456
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 11 470 481
Davis 120 1 121
Irvine 103 0 103
Los Angeles 0 204 204
Riverside 0 5 5
San Diego 50 214 264
San Francisco 0 0 0
Santa Barbara 0 40 40
Santa Cruz 0 49 49
Lawrence Berkeley 0 77 77
Lawrence Livermore 0 10 10
Los Alamos 0 0 0
Other - UC 3 23 26
Other-Network UC n/a 398 398
_______ ______ _____
287 1,491 1,778
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 60 3,445 3,505
Davis 1,326 1 1,327
Irvine 1,132 0 1,132
Los Angeles 0 1,473 1,473
Riverside 0 43 43
San Diego 462 1,623 2,085
San Francisco 0 0 0
Santa Barbara 0 662 662
Santa Cruz 0 505 505
Lawrence Berkeley 0 475 475
Lawrence Livermore 0 125 125
Los Alamos 0 0 0
Other - UC 101 171 272
Other-Network UC n/a 1,852 1,852
_______ ______ _____
3,081 10,375 13,456
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.0
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) 10:56
Average session length (minutes:seconds) 15:03
Longest session recorded (minutes:seconds) 316:01
Average number of searches completed per session 2.2
Retrievals per search - median 5.0
Retrievals per search - average 163.5
Retrievals per search - standard deviation 1010.3
Percent of searches completed with 0 results 28.0%
Percent of searches entered that are long 5.1%
Percent of long searches completed
(includes partial results) 70.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,619 31.7%
DISPLAY (excluding automatic displays) 1,772 34.7%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 28 0.5%
EXPLAIN 51 1.0%
SET/RESET 439 8.6%
SHOW 11 0.2%
ADD ON (AND, OR, AND NOT) 159 3.1%
LOGON or LOGOFF 777 15.2%
COMMENT 0 0.0%
SAVE 62 1.2%
USE 1 0.0%
OTHER 193 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 820 46.2% 174 21.2% 18 96.9 366.9
TITLE WORD 384 21.6% 180 46.9% 4 56.3 151.6
EXACT TITLE 11 0.6% 6 54.5% 15 51.6 89.7
JOURNAL 54 3.0% 14 25.9% 82 1183.3 2653.8
EXACT JOURNAL 23 1.3% 9 39.1% 138 606.3 1069.0
SUBJECT 33 1.9% 7 21.2% 21 53.6 66.5
EXACT SUBJECT 3 0.2% 0 0.0% 4 5.3 3.2
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 279 15.7% 57 20.4% 28 556.4 2209.2
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 10 0.6% 2 20.0% 7 31.5 50.4
DATE 59 3.3% 14 23.7% 11 429.6 1815.8
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. 2 0.1% 0 0.0% 3 3.0 2.8
CONFERENCE 3 0.2% 0 0.0% 4,163 5257.7 5843.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 16 0.9% 10 62.5% 230 1777.2 3616.4
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 65 3.7% 6 9.2% 8 47.8 138.0
EXACT PE 13 0.7% 2 15.4% 2 26.2 51.4
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 0.1% 0 0.0% 16 16.0 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 169 10.6% 48 28.4% 7 176.3 1120.8
Single 1,431 89.4% 380 26.6% 21 248.8 1239.3
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 3.1%
SHORT 82.6%
LONG 2.2%
TAGS 0.0%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.9%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 46.0%
2. First word of command is invalid 30.0%
3. FIND command with invalid index name 5.9%
4. DISPLAY command contains invalid word 2.3%
5. PS command - no previous screen 2.1%
6. DISPLAY command-record numbers too large 1.9%
7. Invalid SET DB INS command issued 1.9%
8. Valid command at an inappropriate time 1.5%
9. DISPLAY command - no FIND results 1.3%
10. NS of SHOW/EXP command-no next screen 1.3%
11. All others 5.9%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 35.3%
2. INSPEC BACKFILES 11.8%
3. FIND (INSPEC DBS) 11.8%
4. GUIDE (INSPEC DBS) 7.8%
5. INDEXES (INSPEC DBS) 3.9%
6. DATABASES 3.9%
7. A014 2.0%
8. FIND (INSPEC DBS) 2.0%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 2.0%
10. I047 2.0%
11. All others 17.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.0%
2. First word of command is invalid 16.5%
3. FIND command with zero results 7.6%
4. FIND command with invalid index name 6.3%
5. NS command - no next screen 5.1%
6. FIND command retrieves >1 book 5.1%
7. DISPLAY command-first of >1 screen 5.1%
8. Help requested from MAIL command 5.1%
9. DISPLAY command - last of >1 screen 3.8%
10. 850 3.8%
11. All others 22.8%
Ten most frequent SHOW requests:
1. HISTORY 63.6%
2. INSPEC LOADING STATISTICS 9.1%
3. SYSTEM NEWS 9.1%
4. SYSTEM3 NEWS 9.1%
11. All others 9.1%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)