MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/07/01 through 04/13/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 11 409 420
Davis 32 2 34
Irvine 148 0 148
Los Angeles 0 170 170
Riverside 1 9 10
San Diego 109 148 257
San Francisco 16 0 16
Santa Barbara 0 100 100
Santa Cruz 3 16 19
Lawrence Berkeley 0 45 45
Lawrence Livermore 0 64 64
Los Alamos 0 0 0
Other - UC 6 32 38
Other-Network UC n/a 448 448
_______ ______ _____
326 1,443 1,769
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,045 2,504 24,148
INS90 291 544 3,526
INS85 159 264 1,043
INS80 147 281 1,492
INS69 127 314 1,520
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 66 171 805
2-4 a.m. 22 52 1,040
4-6 a.m. 46 96 365
6-8 a.m. 75 149 988
8-10 a.m. 231 558 3,092
10-12 a.m. 275 573 4,083
12-2 p.m. 232 482 5,307
2-4 p.m. 302 676 4,952
4-6 p.m. 270 570 4,716
6-8 p.m. 116 264 3,111
8-10 p.m. 76 158 1,091
10-12 p.m. 58 158 2,179
__________ __________ __________ _________________
Total: 1,769 3,907 31,729
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 13 793 806
Davis 120 15 135
Irvine 353 0 353
Los Angeles 0 318 318
Riverside 5 23 28
San Diego 282 336 618
San Francisco 39 0 39
Santa Barbara 0 193 193
Santa Cruz 4 45 49
Lawrence Berkeley 0 159 159
Lawrence Livermore 0 199 199
Los Alamos 0 0 0
Other - UC 5 99 104
Other-Network UC n/a 906 906
_______ ______ _____
821 3,086 3,907
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 58 8,790 8,848
Davis 1,283 122 1,405
Irvine 4,088 0 4,088
Los Angeles 0 2,377 2,377
Riverside 37 190 227
San Diego 1,758 1,793 3,551
San Francisco 67 0 67
Santa Barbara 0 2,476 2,476
Santa Cruz 20 355 375
Lawrence Berkeley 0 1,072 1,072
Lawrence Livermore 0 2,330 2,330
Los Alamos 0 0 0
Other - UC 52 736 788
Other-Network UC n/a 4,125 4,125
_______ ______ _____
7,363 24,366 31,729
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 5.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:21
Average session length (minutes:seconds) 13:41
Longest session recorded (minutes:seconds) 401:18
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1032.3
Retrievals per search - standard deviation 18221
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 4.9%
Percent of long searches completed
(includes partial results) 77.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,465 29.9%
DISPLAY (excluding automatic displays) 4,260 36.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 42 0.4%
EXPLAIN 91 0.8%
SET/RESET 1,110 9.6%
SHOW 54 0.5%
ADD ON (AND, OR, AND NOT) 442 3.8%
LOGON or LOGOFF 1,442 12.5%
COMMENT 0 0.0%
SAVE 152 1.3%
USE 2 0.0%
OTHER 517 4.5%
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 1,617 42.2% 361 22.3% 15 84.9 324.5
TITLE WORD 877 22.9% 333 38.0% 5 85.7 628.1
EXACT TITLE 67 1.7% 30 44.8% 2 4.6 7.2
JOURNAL 124 3.2% 44 35.5% 51 1769.1 6948.0
EXACT JOURNAL 27 0.7% 10 37.0% 1,154 3510.9 3882.6
SUBJECT 57 1.5% 13 22.8% 16 274.3 669.1
EXACT SUBJECT 9 0.2% 4 44.4% 3 3229.0 7172.8
THESAURUS 3 0.1% 0 0.0% 16 3813.7 6581.2
EXACT THESAURUS 17 0.4% 1 5.9% 1,223 1556.1 2029.4
KEYWORD 729 19.0% 122 16.7% 43 3319.7 32421.1
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 27 0.7% 5 18.5% 48 63.5 66.3
DATE 75 2.0% 15 20.0% 31 96.8 194.5
ADDED 12 0.3% 7 58.3% 13 11.0 5.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 26 0.7% 11 42.3% 25 78.2 195.7
CONFERENCE 9 0.2% 4 44.4% 17 32.6 32.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 29 0.8% 12 41.4% 10 212.3 462.2
ISSN 2 0.1% 2 100% 0 0.0 0.0
ISBN 2 0.1% 1 50.0% 101 101.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 109 2.8% 27 24.8% 5 46.2 131.8
EXACT PE 13 0.3% 2 15.4% 2 8.3 14.1
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% 80 80.0 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 397 11.6% 139 35.0% 8 154.5 1146.9
Single 3,031 88.4% 725 23.9% 18 1028.0 16740.2
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 3.7%
SHORT 83.1%
LONG 2.3%
TAGS 0.7%
FIELDS 4.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 38.0%
2. First word of command is invalid 34.0%
3. FIND command with invalid index name 5.3%
4. DISPLAY command contains invalid word 2.7%
5. PS command - no previous screen 2.2%
6. Max. # of ports to a Z39 db are in use 1.9%
7. Invalid SET DB INS command issued 1.5%
8. Valid command at an inappropriate time 1.2%
9. Add-on search, no index name after verb 1.0%
10. 1189 1.0%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 17.6%
2. LOCATE (INS/PSY DBS) 15.4%
3. GUIDE (INSPEC DBS) 13.2%
4. INSPEC BACKFILES 9.9%
5. INDEXES (INSPEC DBS) 6.6%
6. DATABASES 5.5%
7. 1752 5.5%
8. MAIL 3.3%
9. FIND (INSPEC DBS) 3.3%
10. DISPLAY (INS/PSY DBS) 2.2%
11. All others 17.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.3%
2. First word of command is invalid 9.8%
3. DISPLAY command - middle of >1 screen 8.3%
4. DISPLAY command - last of >1 screen 7.5%
5. NS command - no next screen 6.0%
6. DISPLAY command-complete in one screen 6.0%
7. DISPLAY command-first of >1 screen 5.3%
8. FIND command retrieves 1 book 4.5%
9. FIND command with invalid index name 3.0%
10. 850 3.0%
11. All others 20.3%
Ten most frequent SHOW requests:
1. HISTORY 81.1%
2. SETTINGS (INS/PSY DBS) 5.7%
3. INSPEC NEWS 5.7%
4. INSPEC LOADING STATISTICS 1.9%
5. EXPERIMENTS 1.9%
6. EXPERIMENT 54 1.9%
7. DATABASES 1.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)