MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/16/02 through 02/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 176 182
Davis 104 1 105
Irvine 37 0 37
Los Angeles 0 82 82
Riverside 2 9 11
San Diego 45 91 136
San Francisco 5 0 5
Santa Barbara 0 38 38
Santa Cruz 4 17 21
Lawrence Berkeley 0 58 58
Lawrence Livermore 0 27 27
Los Alamos 0 0 0
Other - UC 1 36 37
Other-Network UC n/a 392 392
_______ ______ _____
204 927 1,131
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 720 1,767 19,391
INS90 165 266 4,161
INS85 109 211 1,305
INS80 66 127 444
INS69 71 152 859
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 31 64 466
2-4 a.m. 35 101 596
4-6 a.m. 26 71 715
6-8 a.m. 53 115 637
8-10 a.m. 133 277 1,414
10-12 a.m. 208 393 5,768
12-2 p.m. 182 467 9,708
2-4 p.m. 203 408 2,654
4-6 p.m. 148 316 2,215
6-8 p.m. 51 130 1,055
8-10 p.m. 30 99 471
10-12 p.m. 31 82 461
__________ __________ __________ _________________
Total: 1,131 2,523 26,160
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 22 569 591
Davis 308 1 309
Irvine 136 0 136
Los Angeles 0 164 164
Riverside 5 13 18
San Diego 65 192 257
San Francisco 7 0 7
Santa Barbara 0 78 78
Santa Cruz 8 21 29
Lawrence Berkeley 0 109 109
Lawrence Livermore 0 59 59
Los Alamos 0 0 0
Other - UC 3 57 60
Other-Network UC n/a 706 706
_______ ______ _____
554 1,969 2,523
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 55 3,332 3,387
Davis 11,504 2 11,506
Irvine 630 0 630
Los Angeles 0 1,820 1,820
Riverside 23 74 97
San Diego 808 1,891 2,699
San Francisco 25 0 25
Santa Barbara 0 575 575
Santa Cruz 18 106 124
Lawrence Berkeley 0 904 904
Lawrence Livermore 0 416 416
Los Alamos 0 0 0
Other - UC 8 441 449
Other-Network UC n/a 3,528 3,528
_______ ______ _____
13,071 13,089 26,160
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.6
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) 8:09
Average session length (minutes:seconds) 11:47
Longest session recorded (minutes:seconds) 131:44
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 582.7
Retrievals per search - standard deviation 10719
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 6.3%
Percent of long searches completed
(includes partial results) 78.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,262 32.0%
DISPLAY (excluding automatic displays) 2,428 34.3%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 21 0.3%
EXPLAIN 56 0.8%
SET/RESET 629 8.9%
SHOW 8 0.1%
ADD ON (AND, OR, AND NOT) 261 3.7%
LOGON or LOGOFF 1,043 14.7%
COMMENT 0 0.0%
SAVE 99 1.4%
USE 0 0.0%
OTHER 272 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 1,137 45.3% 274 24.1% 15 75.0 362.9
TITLE WORD 533 21.2% 240 45.0% 4 353.6 1796.9
EXACT TITLE 15 0.6% 13 86.7% 57 57.0 79.2
JOURNAL 18 0.7% 5 27.8% 7 12.8 25.4
EXACT JOURNAL 40 1.6% 24 60.0% 16 96.1 172.7
SUBJECT 63 2.5% 16 25.4% 27 1313.5 7016.3
EXACT SUBJECT 17 0.7% 1 5.9% 4,067 3108.1 2482.9
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 470 18.7% 91 19.4% 20 2501.8 27160.3
SUBFILE 1 0.0% 0 0.0% 59 59.0 0.0
FORM 2 0.1% 0 0.0% 328 327.5 260.9
DATE 58 2.3% 17 29.3% 7 20.8 50.0
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. 15 0.6% 6 40.0% 38 82.3 139.4
CONFERENCE 5 0.2% 1 20.0% 404 526.5 393.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 1 0.0% 0 0.0% 10,131 10131.0 0.0
ISSN 4 0.2% 4 100% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 119 4.7% 19 16.0% 5 35.8 181.9
EXACT PE 9 0.4% 0 0.0% 5 20.1 34.9
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 1 0.0% 0 0.0% 18 18.0 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 267 12.0% 82 30.7% 3 70.6 745.2
Single 1,965 88.0% 545 27.7% 17 860.6 14141.1
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 3.6%
SHORT 77.7%
LONG 4.4%
TAGS 0.1%
FIELDS 5.3%
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 7.1%
Ten most frequent errors:
1. NS command - no next screen 51.5%
2. First word of command is invalid 24.8%
3. FIND command with invalid index name 5.7%
4. DISPLAY command contains invalid word 2.2%
5. PS command - no previous screen 1.8%
6. DISPLAY command - no FIND results 1.1%
7. Search term missing from search command 1.1%
8. DISPLAY command-record numbers too large 0.9%
9. DISPLAY command with >1 format 0.7%
10. Command with odd number of double quotes 0.7%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 17.9%
2. GUIDE (INSPEC DBS) 12.5%
3. DATABASES 8.9%
4. INSPEC BACKFILES 7.1%
5. FIND (INSPEC DBS) 7.1%
6. CAPTURE DISPLAYS 5.4%
7. 1217 5.4%
8. 1752 5.4%
9. MAIL 3.6%
10. LOCATE (INS/PSY DBS) 3.6%
11. All others 23.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.5%
2. NS command - no next screen 15.6%
3. First word of command is invalid 11.7%
4. DISPLAY command-first of >1 screen 9.1%
5. FIND command with zero results 5.2%
6. Multi-index search with zero results 5.2%
7. 3 HELP commands issued from same code 3.9%
8. DISPLAY command - middle of >1 screen 3.9%
9. DISPLAY command - no FIND results 2.6%
10. DISPLAY command contains invalid word 2.6%
11. All others 20.8%
Ten most frequent SHOW requests:
1. HISTORY 87.5%
2. SEARCH 12.5%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)