MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 11/24/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 275 280
Davis 80 1 81
Irvine 59 0 59
Los Angeles 0 106 106
Riverside 11 4 15
San Diego 49 125 174
San Francisco 35 0 35
Santa Barbara 0 47 47
Santa Cruz 1 20 21
Lawrence Berkeley 0 66 66
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 0 46 46
Other-Network UC n/a 359 359
_______ ______ _____
240 1,064 1,304
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 804 1,873 13,111
INS90 193 330 1,883
INS85 127 190 1,291
INS80 95 174 1,133
INS69 85 192 871
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 33 80 420
2-4 a.m. 7 9 99
4-6 a.m. 24 37 227
6-8 a.m. 37 100 585
8-10 a.m. 140 303 1,496
10-12 a.m. 274 491 2,782
12-2 p.m. 185 406 2,494
2-4 p.m. 276 548 3,653
4-6 p.m. 189 473 3,740
6-8 p.m. 63 149 751
8-10 p.m. 52 80 1,024
10-12 p.m. 24 83 1,018
__________ __________ __________ _________________
Total: 1,304 2,759 18,289
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 4 599 603
Davis 204 5 209
Irvine 174 0 174
Los Angeles 0 237 237
Riverside 19 11 30
San Diego 84 320 404
San Francisco 45 0 45
Santa Barbara 0 116 116
Santa Cruz 6 39 45
Lawrence Berkeley 0 135 135
Lawrence Livermore 0 44 44
Los Alamos 0 0 0
Other - UC 0 112 112
Other-Network UC n/a 605 605
_______ ______ _____
536 2,223 2,759
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 4,636 4,644
Davis 1,339 290 1,629
Irvine 1,948 0 1,948
Los Angeles 0 1,333 1,333
Riverside 124 28 152
San Diego 403 2,220 2,623
San Francisco 121 0 121
Santa Barbara 0 811 811
Santa Cruz 5 265 270
Lawrence Berkeley 0 827 827
Lawrence Livermore 0 337 337
Los Alamos 0 0 0
Other - UC 0 496 496
Other-Network UC n/a 3,098 3,098
_______ ______ _____
3,948 14,341 18,289
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 2.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:58
Average session length (minutes:seconds) 11:54
Longest session recorded (minutes:seconds) 199:53
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 155.2
Retrievals per search - standard deviation 1863.9
Percent of searches completed with 0 results 29.2%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 57.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,569 33.0%
DISPLAY (excluding automatic displays) 2,674 34.3%
BROWSE 4 0.1%
SELECT 0 0.0%
HELP 44 0.6%
EXPLAIN 98 1.3%
SET/RESET 807 10.4%
SHOW 22 0.3%
ADD ON (AND, OR, AND NOT) 190 2.4%
LOGON or LOGOFF 1,058 13.6%
COMMENT 0 0.0%
SAVE 38 0.5%
USE 2 0.0%
OTHER 291 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 1,344 48.3% 321 23.9% 15 77.9 424.1
TITLE WORD 532 19.1% 256 48.1% 5 50.8 158.4
EXACT TITLE 21 0.8% 16 76.2% 1 1.4 0.5
JOURNAL 92 3.3% 32 34.8% 30 2041.6 11364.2
EXACT JOURNAL 24 0.9% 16 66.7% 27 77.9 112.3
SUBJECT 63 2.3% 24 38.1% 69 553.1 1293.8
EXACT SUBJECT 9 0.3% 7 77.8% 10 10.0 4.2
THESAURUS 3 0.1% 0 0.0% 492 330.0 280.6
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 440 15.8% 77 17.5% 26 449.4 1843.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 3 0.1% 0 0.0% 19 19.3 15.5
DATE 83 3.0% 16 19.3% 7 61.6 145.8
ADDED 1 0.0% 1 100% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 11 0.4% 0 0.0% 16 117.2 290.5
CONFERENCE 13 0.5% 7 53.8% 763 1099.5 1215.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 22 0.8% 19 86.4% 62 43.3 32.3
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 105 3.8% 12 11.4% 4 90.0 593.9
EXACT PE 16 0.6% 2 12.5% 3 27.6 87.5
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 2 0.1% 0 0.0% 81 81.0 91.9
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 252 10.0% 76 30.2% 5 38.7 119.8
Single 2,278 90.0% 653 28.7% 16 252.3 2404.4
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 4 100% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 83.4%
LONG 2.5%
TAGS 0.2%
FIELDS 3.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 6.3%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 44.7%
2. First word of command is invalid 27.9%
3. FIND command with invalid index name 5.8%
4. Max. # of ports to a Z39 db are in use 5.8%
5. DISPLAY command contains invalid word 1.9%
6. Search term missing from search command 1.1%
7. NS of SHOW/EXP command-no next screen 0.9%
8. Command contains escape or arrow key 0.9%
9. Valid command at an inappropriate time 0.8%
10. PS command - no previous screen 0.8%
11. All others 9.2%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 17.3%
2. INSPEC DATABASES 14.3%
3. GUIDE (INSPEC DBS) 11.2%
4. DATABASES 11.2%
5. INSPEC BACKFILES 6.1%
6. MAIL 4.1%
7. LOCATE (INS/PSY DBS) 4.1%
8. INDEXES (INSPEC DBS) 4.1%
9. DISPLAY (INS/PSY DBS) 4.1%
10. 1752 3.1%
11. All others 20.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 17.6%
2. First word of command is invalid 13.4%
3. NS command - no next screen 9.9%
4. FIND command retrieves >1 book 9.9%
5. FIND command with zero results 7.0%
6. DISPLAY command - last of >1 screen 5.6%
7. DISPLAY command-first of >1 screen 4.9%
8. 15 3.5%
9. FIND command with invalid index name 3.5%
10. Multi-index search with zero results 3.5%
11. All others 21.1%
Ten most frequent SHOW requests:
1. HISTORY 68.2%
2. SEARCH 27.3%
3. SETTINGS (INS/PSY DBS) 4.5%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)