MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/19/02 through 01/25/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 201 204
Davis 43 0 43
Irvine 68 0 68
Los Angeles 0 115 115
Riverside 1 9 10
San Diego 52 218 270
San Francisco 2 0 2
Santa Barbara 1 58 59
Santa Cruz 0 21 21
Lawrence Berkeley 0 47 47
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 6 18 24
Other-Network UC n/a 372 372
_______ ______ _____
176 1,064 1,240
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 806 1,863 15,990
INS90 179 305 1,439
INS85 97 170 794
INS80 80 143 951
INS69 78 150 1,163
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 24 455
2-4 a.m. 16 38 224
4-6 a.m. 23 36 296
6-8 a.m. 40 90 536
8-10 a.m. 142 283 2,149
10-12 a.m. 265 500 3,678
12-2 p.m. 194 403 3,456
2-4 p.m. 262 528 4,316
4-6 p.m. 171 425 3,236
6-8 p.m. 65 124 1,079
8-10 p.m. 32 95 580
10-12 p.m. 18 85 332
__________ __________ __________ _________________
Total: 1,240 2,631 20,337
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 4 549 553
Davis 85 0 85
Irvine 227 0 227
Los Angeles 0 187 187
Riverside 2 12 14
San Diego 95 483 578
San Francisco 2 0 2
Santa Barbara 1 107 108
Santa Cruz 0 36 36
Lawrence Berkeley 0 93 93
Lawrence Livermore 0 22 22
Los Alamos 0 0 0
Other - UC 16 50 66
Other-Network UC n/a 660 660
_______ ______ _____
432 2,199 2,631
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 32 3,207 3,239
Davis 2,017 0 2,017
Irvine 2,679 0 2,679
Los Angeles 0 1,417 1,417
Riverside 2 57 59
San Diego 908 3,393 4,301
San Francisco 0 0 0
Santa Barbara 0 718 718
Santa Cruz 0 203 203
Lawrence Berkeley 0 944 944
Lawrence Livermore 0 174 174
Los Alamos 0 0 0
Other - UC 31 669 700
Other-Network UC n/a 3,886 3,886
_______ ______ _____
5,669 14,668 20,337
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 3.1
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) 10:39
Average session length (minutes:seconds) 14:31
Longest session recorded (minutes:seconds) 483:31
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 229.3
Retrievals per search - standard deviation 1667.0
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 4.7%
Percent of long searches completed
(includes partial results) 52.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,478 31.4%
DISPLAY (excluding automatic displays) 2,873 36.4%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 48 0.6%
EXPLAIN 91 1.2%
SET/RESET 765 9.7%
SHOW 10 0.1%
ADD ON (AND, OR, AND NOT) 153 1.9%
LOGON or LOGOFF 1,024 13.0%
COMMENT 0 0.0%
SAVE 164 2.1%
USE 1 0.0%
OTHER 295 3.7%
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 1,147 42.8% 275 24.0% 16 98.2 527.4
TITLE WORD 504 18.8% 255 50.6% 5 68.4 231.5
EXACT TITLE 25 0.9% 15 60.0% 1 1.3 0.7
JOURNAL 101 3.8% 33 32.7% 7 364.1 1220.9
EXACT JOURNAL 28 1.0% 16 57.1% 264 592.2 931.8
SUBJECT 36 1.3% 10 27.8% 33 2605.0 6761.8
EXACT SUBJECT 4 0.1% 0 0.0% 18 22.8 18.8
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 590 22.0% 100 16.9% 23 739.9 3285.2
SUBFILE 4 0.1% 0 0.0% 79 76.0 12.2
FORM 7 0.3% 1 14.3% 43 2003.7 3260.5
DATE 23 0.9% 2 8.7% 9 45.7 118.9
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. 16 0.6% 1 6.3% 37 82.7 163.3
CONFERENCE 27 1.0% 7 25.9% 958 714.6 464.8
LANGUAGE 6 0.2% 0 0.0% 73 70.3 14.1
CHEMICAL NAME 1 0.0% 0 0.0% 14 14.0 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 142 5.3% 23 16.2% 5 29.1 82.3
EXACT PE 15 0.6% 1 6.7% 10 111.3 201.6
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 3 0.1% 0 0.0% 49 47.0 21.1
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 253 10.4% 85 33.6% 5 91.1 676.7
Single 2,169 89.6% 570 26.3% 18 355.5 2091.4
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 1 100% 0 0.0% 9 9.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 82.4%
LONG 2.9%
TAGS 0.1%
FIELDS 3.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.7%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 50.4%
2. First word of command is invalid 23.3%
3. FIND command with invalid index name 7.0%
4. Invalid SET DB INS command issued 2.9%
5. DISPLAY command contains invalid word 2.3%
6. PS command - no previous screen 1.7%
7. NS of SHOW/EXP command-no next screen 1.2%
8. DISPLAY command - no FIND results 1.1%
9. DISPLAY command-record numbers too large 1.1%
10. Search term missing from search command 0.8%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 17.6%
2. INSPEC DATABASES 14.3%
3. MAIL 8.8%
4. LOCATE (INS/PSY DBS) 6.6%
5. INDEXES (INSPEC DBS) 6.6%
6. DATABASES 6.6%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.4%
8. 1752 4.4%
9. ADDON SEARCH 4.4%
10. GUIDE (INSPEC DBS) 3.3%
11. All others 23.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.7%
2. DISPLAY command - middle of >1 screen 12.9%
3. First word of command is invalid 8.6%
4. FIND command with zero results 8.6%
5. NS of SHOW/EXP command-no next screen 7.2%
6. DISPLAY command-first of >1 screen 5.8%
7. FIND command with invalid index name 5.0%
8. 252 5.0%
9. DISPLAY command-complete in one screen 5.0%
10. DISPLAY command - last of >1 screen 4.3%
11. All others 18.7%
Ten most frequent SHOW requests:
1. MAIL STATUS 60.0%
2. HISTORY 30.0%
3. INSPEC LOADING STATISTICS 10.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)