MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/01/02 through 04/30/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 26 934 960
Davis 207 5 212
Irvine 241 0 241
Los Angeles 1 390 391
Riverside 13 162 175
San Diego 138 401 539
San Francisco 28 0 28
Santa Barbara 7 68 75
Santa Cruz 13 100 113
Lawrence Berkeley 0 111 111
Lawrence Livermore 0 75 75
Los Alamos 0 0 0
Other - UC 1 79 80
Other-Network UC n/a 1,406 1,406
_______ ______ _____
675 3,731 4,406
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 2,765 6,285 56,295
INS90 598 1,267 5,765
INS85 389 642 3,474
INS80 323 592 2,558
INS69 331 738 5,081
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 139 254 2,361
2-4 a.m. 104 240 2,014
4-6 a.m. 107 206 1,330
6-8 a.m. 237 703 3,640
8-10 a.m. 620 1,292 8,730
10-12 a.m. 827 1,838 11,507
12-2 p.m. 586 1,159 8,550
2-4 p.m. 748 1,578 15,743
4-6 p.m. 533 1,186 11,546
6-8 p.m. 172 385 2,286
8-10 p.m. 180 392 3,413
10-12 p.m. 153 291 2,053
__________ __________ __________ _________________
Total: 4,406 9,524 73,173
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 44 2,125 2,169
Davis 443 7 450
Irvine 498 0 498
Los Angeles 3 797 800
Riverside 25 647 672
San Diego 262 897 1,159
San Francisco 47 0 47
Santa Barbara 9 128 137
Santa Cruz 41 189 230
Lawrence Berkeley 0 251 251
Lawrence Livermore 0 274 274
Los Alamos 0 0 0
Other - UC 0 198 198
Other-Network UC n/a 2,639 2,639
_______ ______ _____
1,372 8,152 9,524
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 168 20,854 21,022
Davis 3,850 17 3,867
Irvine 5,298 0 5,298
Los Angeles 6 5,883 5,889
Riverside 183 2,916 3,099
San Diego 1,633 8,049 9,682
San Francisco 173 0 173
Santa Barbara 15 1,389 1,404
Santa Cruz 96 784 880
Lawrence Berkeley 0 2,962 2,962
Lawrence Livermore 0 1,724 1,724
Los Alamos 0 0 0
Other - UC 14 1,463 1,477
Other-Network UC n/a 15,696 15,696
_______ ______ _____
11,436 61,737 73,173
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 4.0
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
_________________________________________
Median session length (minutes:seconds) 9:35
Average session length (minutes:seconds) 14:28
Longest session recorded (minutes:seconds) 442:32
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 420.3
Retrievals per search - standard deviation 5499.5
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 5.1%
Percent of long searches completed
(includes partial results) 80.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 8,565 30.8%
DISPLAY (excluding automatic displays) 10,070 36.2%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 188 0.7%
EXPLAIN 293 1.1%
SET/RESET 2,639 9.5%
SHOW 101 0.4%
ADD ON (AND, OR, AND NOT) 959 3.4%
LOGON or LOGOFF 3,732 13.4%
COMMENT 0 0.0%
SAVE 221 0.8%
USE 0 0.0%
OTHER 1,081 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 4,482 46.7% 1,048 23.4% 14 164.1 5411.0
TITLE WORD 1,684 17.5% 858 50.9% 5 235.5 2588.0
EXACT TITLE 46 0.5% 29 63.0% 4 14.9 29.8
JOURNAL 235 2.4% 85 36.2% 56 3587.6 13276.5
EXACT JOURNAL 130 1.4% 65 50.0% 43 856.4 2728.1
SUBJECT 266 2.8% 99 37.2% 28 1472.2 8257.0
EXACT SUBJECT 18 0.2% 1 5.6% 3,534 2716.2 2507.2
THESAURUS 31 0.3% 1 3.2% 52 3632.2 9271.9
EXACT THESAURUS 1 0.0% 0 0.0% 1 1.0 0.0
KEYWORD 1,734 18.1% 323 18.6% 21 1758.2 12944.1
SUBFILE 14 0.1% 3 21.4% 44 52.9 44.0
FORM 81 0.8% 3 3.7% 42 115.2 291.3
DATE 253 2.6% 73 28.9% 11 82.2 270.5
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. 96 1.0% 23 24.0% 14 41.3 72.7
CONFERENCE 25 0.3% 6 24.0% 82 283.7 567.4
LANGUAGE 2 0.0% 0 0.0% 23 23.0 0.0
CHEMICAL NAME 13 0.1% 9 69.2% 107 106.8 121.5
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 48 48.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 421 4.4% 78 18.5% 6 87.7 787.7
EXACT PE 57 0.6% 3 5.3% 3 16.4 48.9
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 4 0.0% 1 25.0% 29 48.3 59.4
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 1,089 12.9% 387 35.5% 7 649.1 12237.2
Single 7,383 87.1% 1,932 26.2% 17 621.2 5713.3
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 1 50.0% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 1 50.0% 0 0.0% 46 46.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.3%
SHORT 79.5%
LONG 3.5%
TAGS 0.3%
FIELDS 4.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.1%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 49.4%
2. First word of command is invalid 24.3%
3. FIND command with invalid index name 6.2%
4. DISPLAY command contains invalid word 2.9%
5. PS command - no previous screen 1.5%
6. DISPLAY command - no FIND results 1.4%
7. Search term missing from search command 1.4%
8. NS of SHOW/EXP command-no next screen 1.1%
9. Command contains escape or arrow key 1.1%
10. Invalid SET DB INS command issued 0.9%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.3%
2. INSPEC DATABASES 12.3%
3. LOCATE (INS/PSY DBS) 10.2%
4. GUIDE (INSPEC DBS) 9.2%
5. INDEXES (INSPEC DBS) 7.2%
6. INSPEC BACKFILES 6.5%
7. MAIL 5.5%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.4%
9. 1752 4.4%
10. DISPLAY (INS/PSY DBS) 2.7%
11. All others 24.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.1%
2. DISPLAY command - middle of >1 screen 7.9%
3. First word of command is invalid 7.7%
4. DISPLAY command-first of >1 screen 7.1%
5. FIND command with zero results 5.8%
6. FIND command with invalid index name 5.4%
7. NS command - no next screen 4.8%
8. DISPLAY command - last of >1 screen 4.0%
9. DISPLAY command-complete in one screen 3.7%
10. FIND command retrieves >1 book 3.5%
11. All others 22.0%
Ten most frequent SHOW requests:
1. SEARCH 47.4%
2. HISTORY 36.1%
3. MAIL STATUS 8.2%
4. SETTINGS (INS/PSY DBS) 3.1%
5. INSPEC NEWS 2.1%
6. LIBRARY SETTINGS 1.0%
7. MAIL SETTINGS 1.0%
8. FIND DISPLAY 1.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)