MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 08/11/01 through 08/17/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 230 234
Davis 82 2 84
Irvine 78 0 78
Los Angeles 0 139 139
Riverside 1 12 13
San Diego 48 120 168
San Francisco 19 0 19
Santa Barbara 2 35 37
Santa Cruz 13 39 52
Lawrence Berkeley 0 60 60
Lawrence Livermore 0 26 26
Los Alamos 0 0 0
Other - UC 0 41 41
Other-Network UC n/a 495 495
_______ ______ _____
247 1,199 1,446
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 872 1,978 16,502
INS90 209 390 2,236
INS85 150 250 1,591
INS80 119 207 989
INS69 96 211 1,443
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 52 893
2-4 a.m. 20 45 114
4-6 a.m. 20 42 268
6-8 a.m. 43 64 681
8-10 a.m. 161 311 1,262
10-12 a.m. 270 592 3,705
12-2 p.m. 255 529 5,006
2-4 p.m. 267 588 4,158
4-6 p.m. 211 415 4,288
6-8 p.m. 109 248 1,235
8-10 p.m. 36 72 443
10-12 p.m. 38 78 708
__________ __________ __________ _________________
Total: 1,446 3,036 22,761
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 7 545 552
Davis 194 2 196
Irvine 232 0 232
Los Angeles 0 323 323
Riverside 2 34 36
San Diego 117 254 371
San Francisco 46 0 46
Santa Barbara 5 73 78
Santa Cruz 25 75 100
Lawrence Berkeley 0 120 120
Lawrence Livermore 0 86 86
Los Alamos 0 0 0
Other - UC 0 73 73
Other-Network UC n/a 823 823
_______ ______ _____
628 2,408 3,036
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 5,303 5,318
Davis 1,109 9 1,118
Irvine 2,112 0 2,112
Los Angeles 0 4,557 4,557
Riverside 0 242 242
San Diego 485 1,206 1,691
San Francisco 226 0 226
Santa Barbara 3 639 642
Santa Cruz 204 634 838
Lawrence Berkeley 0 1,118 1,118
Lawrence Livermore 0 220 220
Los Alamos 0 0 0
Other - UC 0 911 911
Other-Network UC n/a 3,768 3,768
_______ ______ _____
4,154 18,607 22,761
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 6.0
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
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Median session length (minutes:seconds) 10:03
Average session length (minutes:seconds) 12:43
Longest session recorded (minutes:seconds) 213:33
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 1308.9
Retrievals per search - standard deviation 21856
Percent of searches completed with 0 results 30.9%
Percent of searches entered that are long 5.7%
Percent of long searches completed
(includes partial results) 80.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,690 30.8%
DISPLAY (excluding automatic displays) 3,146 36.0%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 60 0.7%
EXPLAIN 100 1.1%
SET/RESET 976 11.2%
SHOW 20 0.2%
ADD ON (AND, OR, AND NOT) 346 4.0%
LOGON or LOGOFF 1,015 11.6%
COMMENT 0 0.0%
SAVE 56 0.6%
USE 3 0.0%
OTHER 335 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 1,325 43.3% 326 24.6% 17 97.2 343.6
TITLE WORD 666 21.8% 349 52.4% 3 69.5 457.9
EXACT TITLE 43 1.4% 31 72.1% 1 37.3 117.5
JOURNAL 76 2.5% 32 42.1% 60 3578.3 12986.5
EXACT JOURNAL 14 0.5% 11 78.6% 6,959 5861.7 5287.1
SUBJECT 76 2.5% 22 28.9% 62 752.6 932.7
EXACT SUBJECT 8 0.3% 3 37.5% 4 3355.8 7496.5
THESAURUS 5 0.2% 4 80.0% 12,063 12063.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 443 14.5% 85 19.2% 49 5143.4 44441.0
SUBFILE 3 0.1% 0 0.0% 26 32.3 13.7
FORM 13 0.4% 0 0.0% 12 513.2 1343.5
DATE 108 3.5% 16 14.8% 13 58.9 145.7
ADDED 14 0.5% 12 85.7% 3 2.5 2.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 63 2.1% 13 20.6% 11 44.6 100.3
CONFERENCE 14 0.5% 6 42.9% 3,729 5099.9 7336.9
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 22 0.7% 5 22.7% 6,725 3962.1 3403.9
ISSN 2 0.1% 2 100% 0 0.0 0.0
ISBN 4 0.1% 3 75.0% 291 291.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 141 4.6% 26 18.4% 5 25.0 99.6
EXACT PE 14 0.5% 0 0.0% 3 13.7 27.8
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 3 0.1% 0 0.0% 8 410.7 703.5
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 384 14.4% 134 34.9% 7 140.9 870.1
Single 2,277 85.6% 673 29.6% 17 1408.3 21203.9
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 2 100% 0 0.0% 9 9.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 83.7%
LONG 2.0%
TAGS 0.2%
FIELDS 2.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.8%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 40.5%
2. First word of command is invalid 26.0%
3. FIND command with invalid index name 6.0%
4. Max. # of ports to a Z39 db are in use 4.0%
5. DISPLAY command contains invalid word 3.3%
6. Search term missing from search command 2.7%
7. PS command - no previous screen 2.3%
8. DISPLAY command - no FIND results 1.4%
9. Valid command at an inappropriate time 1.2%
10. Add-on search, no index name after verb 1.2%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 13.0%
2. FIND (INSPEC DBS) 11.0%
3. LOCATE (INS/PSY DBS) 9.0%
4. INSPEC BACKFILES 8.0%
5. GUIDE (INSPEC DBS) 7.0%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 5.0%
7. Unrecognized term 5.0%
8. INDEXES (INSPEC DBS) 4.0%
9. I038 3.0%
10. I124 3.0%
11. All others 32.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.9%
2. First word of command is invalid 8.8%
3. FIND command with zero results 8.8%
4. FIND command retrieves >1 book 7.5%
5. DISPLAY command - middle of >1 screen 7.5%
6. DISPLAY command - last of >1 screen 5.0%
7. DISPLAY command-complete in one screen 4.4%
8. SET DB command entered w/o modifier 3.8%
9. FIND command with invalid index name 3.8%
10. PS command - no previous screen 2.5%
11. All others 21.3%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SETTINGS (INS/PSY DBS) 11.1%
3. INSPEC NEWS 11.1%
4. INSPEC LOADING STATISTICS 11.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)