MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/21/01 through 04/27/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 351 356
Davis 48 5 53
Irvine 84 0 84
Los Angeles 0 181 181
Riverside 8 13 21
San Diego 93 212 305
San Francisco 32 0 32
Santa Barbara 5 58 63
Santa Cruz 37 33 70
Lawrence Berkeley 0 41 41
Lawrence Livermore 0 29 29
Los Alamos 0 0 0
Other - UC 1 95 96
Other-Network UC n/a 343 343
_______ ______ _____
313 1,361 1,674
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,031 2,547 28,068
INS90 229 398 3,249
INS85 143 255 2,030
INS80 145 251 2,573
INS69 126 224 2,094
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 48 105 810
2-4 a.m. 21 37 430
4-6 a.m. 21 40 135
6-8 a.m. 47 120 938
8-10 a.m. 155 367 4,533
10-12 a.m. 314 646 4,856
12-2 p.m. 252 575 5,341
2-4 p.m. 338 719 6,809
4-6 p.m. 231 464 4,510
6-8 p.m. 125 279 6,832
8-10 p.m. 60 147 1,010
10-12 p.m. 62 176 1,810
__________ __________ __________ _________________
Total: 1,674 3,675 38,014
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 10 729 739
Davis 106 16 122
Irvine 166 0 166
Los Angeles 0 395 395
Riverside 29 42 71
San Diego 178 527 705
San Francisco 84 0 84
Santa Barbara 11 129 140
Santa Cruz 83 101 184
Lawrence Berkeley 0 102 102
Lawrence Livermore 0 107 107
Los Alamos 0 0 0
Other - UC 0 206 206
Other-Network UC n/a 654 654
_______ ______ _____
667 3,008 3,675
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 124 6,724 6,848
Davis 885 19 904
Irvine 2,179 0 2,179
Los Angeles 0 11,201 11,201
Riverside 204 168 372
San Diego 1,144 3,811 4,955
San Francisco 549 0 549
Santa Barbara 46 1,273 1,319
Santa Cruz 546 637 1,183
Lawrence Berkeley 0 1,237 1,237
Lawrence Livermore 0 1,274 1,274
Los Alamos 0 0 0
Other - UC 0 1,815 1,815
Other-Network UC n/a 4,178 4,178
_______ ______ _____
5,677 32,337 38,014
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 5.7
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) 8:55
Average session length (minutes:seconds) 13:41
Longest session recorded (minutes:seconds) 286:10
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 914.1
Retrievals per search - standard deviation 17926
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 5.0%
Percent of long searches completed
(includes partial results) 75.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,374 29.7%
DISPLAY (excluding automatic displays) 4,290 37.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 44 0.4%
EXPLAIN 94 0.8%
SET/RESET 1,044 9.2%
SHOW 22 0.2%
ADD ON (AND, OR, AND NOT) 301 2.7%
LOGON or LOGOFF 1,357 12.0%
COMMENT 0 0.0%
SAVE 370 3.3%
USE 2 0.0%
OTHER 444 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 1,612 43.6% 402 24.9% 15 76.9 320.4
TITLE WORD 679 18.3% 300 44.2% 8 94.8 510.4
EXACT TITLE 46 1.2% 27 58.7% 2 8.5 16.7
JOURNAL 90 2.4% 40 44.4% 31 2132.9 11186.3
EXACT JOURNAL 18 0.5% 8 44.4% 148 436.7 793.5
SUBJECT 195 5.3% 67 34.4% 41 527.3 1486.7
EXACT SUBJECT 9 0.2% 2 22.2% 22 2434.3 6051.4
THESAURUS 7 0.2% 1 14.3% 106 5366.3 8708.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 683 18.5% 92 13.5% 37 3051.5 33746.0
SUBFILE 1 0.0% 0 0.0% 782 782.0 0.0
FORM 12 0.3% 1 8.3% 11 67.8 103.4
DATE 90 2.4% 17 18.9% 5 142.7 786.3
ADDED 11 0.3% 6 54.5% 13 11.0 3.2
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 79 2.1% 18 22.8% 29 361.3 1949.8
CONFERENCE 21 0.6% 6 28.6% 274 421.6 488.9
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 24 0.6% 7 29.2% 18 103.7 145.9
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 4 0.1% 4 100% 0 0.0 0.0
PERIODICAL 106 2.9% 21 19.8% 4 20.1 43.2
EXACT PE 12 0.3% 1 8.3% 5 44.3 115.5
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 1 0.0% 0 0.0% 151 151.0 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 360 10.8% 111 30.8% 7 141.9 900.0
Single 2,971 89.2% 796 26.8% 18 981.2 17723.5
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 3.4%
SHORT 83.1%
LONG 2.9%
TAGS 1.8%
FIELDS 3.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 47.1%
2. First word of command is invalid 23.0%
3. DISPLAY command contains invalid word 5.0%
4. FIND command with invalid index name 4.2%
5. Max. # of ports to a Z39 db are in use 1.8%
6. PS command - no previous screen 1.7%
7. DISPLAY command - no FIND results 1.5%
8. NS of SHOW/EXP command-no next screen 1.3%
9. Invalid SET DB INS command issued 1.2%
10. Command contains escape or arrow key 1.1%
11. All others 12.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 16.0%
2. INSPEC DATABASES 10.6%
3. INSPEC BACKFILES 9.6%
4. GUIDE (INSPEC DBS) 8.5%
5. 1752 7.4%
6. Unrecognized term 6.4%
7. INDEXES (INSPEC DBS) 5.3%
8. DISPLAY (INS/PSY DBS) 5.3%
9. ADDON SEARCH 5.3%
10. LOCATE (INS/PSY DBS) 4.3%
11. All others 21.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.7%
2. FIND command with zero results 9.4%
3. FIND command retrieves >1 book 8.0%
4. First word of command is invalid 7.2%
5. DISPLAY command - middle of >1 screen 5.8%
6. NS command - no next screen 5.1%
7. DISPLAY command-first of >1 screen 5.1%
8. NS of SHOW/EXP command-no next screen 5.1%
9. SET DB command entered w/o modifier 4.3%
10. FIND command with invalid index name 4.3%
11. All others 23.9%
Ten most frequent SHOW requests:
1. HISTORY 72.2%
2. MAIL STATUS 16.7%
3. INSPEC NEWS 5.6%
4. SEARCH 5.6%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)