MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/14/01 through 04/20/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 399 404
Davis 31 12 43
Irvine 105 0 105
Los Angeles 0 140 140
Riverside 11 12 23
San Diego 94 220 314
San Francisco 28 0 28
Santa Barbara 3 65 68
Santa Cruz 10 18 28
Lawrence Berkeley 0 38 38
Lawrence Livermore 0 26 26
Los Alamos 0 0 0
Other - UC 0 83 83
Other-Network UC n/a 285 285
_______ ______ _____
287 1,298 1,585
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 952 2,295 25,595
INS90 220 431 2,724
INS85 148 260 1,656
INS80 146 273 1,366
INS69 119 241 1,711
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 21 52 453
2-4 a.m. 16 40 244
4-6 a.m. 17 34 371
6-8 a.m. 38 100 626
8-10 a.m. 163 358 3,321
10-12 a.m. 329 759 4,883
12-2 p.m. 257 533 6,357
2-4 p.m. 321 720 8,057
4-6 p.m. 194 494 3,877
6-8 p.m. 119 229 3,647
8-10 p.m. 74 127 860
10-12 p.m. 36 54 356
__________ __________ __________ _________________
Total: 1,585 3,500 33,052
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 7 776 783
Davis 74 28 102
Irvine 277 0 277
Los Angeles 0 329 329
Riverside 22 41 63
San Diego 237 499 736
San Francisco 100 0 100
Santa Barbara 3 131 134
Santa Cruz 22 32 54
Lawrence Berkeley 0 83 83
Lawrence Livermore 0 93 93
Los Alamos 0 0 0
Other - UC 0 156 156
Other-Network UC n/a 590 590
_______ ______ _____
742 2,758 3,500
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 35 11,186 11,221
Davis 1,693 898 2,591
Irvine 2,436 0 2,436
Los Angeles 0 2,543 2,543
Riverside 224 162 386
San Diego 1,381 3,042 4,423
San Francisco 803 0 803
Santa Barbara 49 2,091 2,140
Santa Cruz 111 165 276
Lawrence Berkeley 0 503 503
Lawrence Livermore 0 1,502 1,502
Los Alamos 0 0 0
Other - UC 0 987 987
Other-Network UC n/a 3,241 3,241
_______ ______ _____
6,732 26,320 33,052
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 7.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:04
Average session length (minutes:seconds) 12:02
Longest session recorded (minutes:seconds) 175:17
Average number of searches completed per session 2.2
Retrievals per search - median 5.0
Retrievals per search - average 754.8
Retrievals per search - standard deviation 11050
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 70.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,134 30.8%
DISPLAY (excluding automatic displays) 3,456 34.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 55 0.5%
EXPLAIN 111 1.1%
SET/RESET 921 9.1%
SHOW 53 0.5%
ADD ON (AND, OR, AND NOT) 366 3.6%
LOGON or LOGOFF 1,404 13.8%
COMMENT 0 0.0%
SAVE 242 2.4%
USE 4 0.0%
OTHER 423 4.2%
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 1,629 46.6% 412 25.3% 15 77.5 301.5
TITLE WORD 680 19.4% 282 41.5% 4 90.8 712.0
EXACT TITLE 38 1.1% 22 57.9% 2 2.3 1.2
JOURNAL 56 1.6% 19 33.9% 80 3932.4 12647.2
EXACT JOURNAL 19 0.5% 8 42.1% 45 148.2 207.1
SUBJECT 137 3.9% 42 30.7% 12 902.1 3384.2
EXACT SUBJECT 9 0.3% 0 0.0% 5 1793.3 5364.3
THESAURUS 14 0.4% 0 0.0% 313 2055.6 3253.2
EXACT THESAURUS 11 0.3% 1 9.1% 2,085 2763.4 3783.4
KEYWORD 566 16.2% 84 14.8% 26 2121.2 12613.3
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 12 0.3% 1 8.3% 84 335.8 520.3
DATE 63 1.8% 12 19.0% 14 125.6 321.9
ADDED 14 0.4% 6 42.9% 8 7.1 4.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 83 2.4% 11 13.3% 30 133.6 324.4
CONFERENCE 21 0.6% 5 23.8% 267 973.5 1553.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 7 0.2% 5 71.4% 6 6.0 7.1
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 1 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 107 3.1% 17 15.9% 4 387.4 3121.2
EXACT PE 25 0.7% 1 4.0% 2 8.0 11.7
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 4 0.1% 1 25.0% 29 327.0 524.8
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 400 13.0% 143 35.7% 5 154.0 1134.3
Single 2,684 87.0% 643 24.0% 17 710.6 6508.4
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 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 4.2%
SHORT 77.7%
LONG 3.7%
TAGS 1.2%
FIELDS 6.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.8%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 36.9%
2. First word of command is invalid 36.8%
3. FIND command with invalid index name 5.3%
4. DISPLAY command contains invalid word 1.8%
5. Valid command at an inappropriate time 1.5%
6. PS command - no previous screen 1.5%
7. Search term missing from search command 1.4%
8. NS of SHOW/EXP command-no next screen 1.1%
9. Max. # of ports to a Z39 db are in use 1.0%
10. Add-on search, no index name after verb 0.9%
11. All others 11.8%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 21.6%
2. GUIDE (INSPEC DBS) 8.1%
3. FIND (INSPEC DBS) 8.1%
4. 1752 7.2%
5. LOCATE (INS/PSY DBS) 6.3%
6. INSPEC BACKFILES 6.3%
7. INDEXES (INSPEC DBS) 5.4%
8. DATABASES 5.4%
9. INDEXES (INSPEC DBS) 2.7%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 2.7%
11. All others 26.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.3%
2. First word of command is invalid 9.6%
3. FIND command retrieves >1 book 7.8%
4. DISPLAY command - last of >1 screen 7.2%
5. DISPLAY command - middle of >1 screen 6.0%
6. NS command - no next screen 5.4%
7. FIND command with zero results 4.2%
8. FIND command with invalid index name 3.6%
9. Help requested from MAIL command 3.6%
10. SET command with invalid setting 3.0%
11. All others 27.1%
Ten most frequent SHOW requests:
1. HISTORY 48.1%
2. INSPEC LOADING STATISTICS 17.3%
3. MAIL STATUS 11.5%
4. PSYCINFO LOADING STATISTICS 9.6%
5. SYSTEM NEWS 3.8%
6. SETTINGS (INS/PSY DBS) 1.9%
7. INSPEC NEWS 1.9%
8. INSPEC STATISTICS 1.9%
9. GLOSSARY 1.9%
10. SEARCH 1.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)