MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 08/25/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 385 393
Davis 71 0 71
Irvine 31 0 31
Los Angeles 0 329 329
Riverside 3 5 8
San Diego 44 83 127
San Francisco 3 0 3
Santa Barbara 1 20 21
Santa Cruz 3 58 61
Lawrence Berkeley 0 51 51
Lawrence Livermore 0 22 22
Los Alamos 0 0 0
Other - UC 0 29 29
Other-Network UC n/a 541 541
_______ ______ _____
164 1,523 1,687
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 940 2,069 13,778
INS90 227 413 1,677
INS85 212 412 1,354
INS80 147 288 904
INS69 161 372 1,944
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 74 197 967
2-4 a.m. 58 153 920
4-6 a.m. 25 62 449
6-8 a.m. 63 133 383
8-10 a.m. 168 362 1,700
10-12 a.m. 343 635 4,003
12-2 p.m. 277 578 3,971
2-4 p.m. 305 653 2,982
4-6 p.m. 153 290 2,100
6-8 p.m. 67 147 685
8-10 p.m. 76 176 768
10-12 p.m. 78 168 729
__________ __________ __________ _________________
Total: 1,687 3,554 19,657
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 12 984 996
Davis 190 0 190
Irvine 63 0 63
Los Angeles 0 683 683
Riverside 6 8 14
San Diego 102 171 273
San Francisco 6 0 6
Santa Barbara 4 47 51
Santa Cruz 8 96 104
Lawrence Berkeley 0 119 119
Lawrence Livermore 0 67 67
Los Alamos 0 0 0
Other - UC 0 72 72
Other-Network UC n/a 916 916
_______ ______ _____
391 3,163 3,554
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 179 6,601 6,780
Davis 1,556 0 1,556
Irvine 198 0 198
Los Angeles 0 1,735 1,735
Riverside 68 72 140
San Diego 325 1,456 1,781
San Francisco 15 0 15
Santa Barbara 23 271 294
Santa Cruz 106 913 1,019
Lawrence Berkeley 0 897 897
Lawrence Livermore 0 555 555
Los Alamos 0 0 0
Other - UC 0 436 436
Other-Network UC n/a 4,251 4,251
_______ ______ _____
2,470 17,187 19,657
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
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 0.5
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 4:02
Average session length (minutes:seconds) 11:06
Longest session recorded (minutes:seconds) 889:38
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 1145.9
Retrievals per search - standard deviation 19620
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 6.5%
Percent of long searches completed
(includes partial results) 84.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,224 33.9%
DISPLAY (excluding automatic displays) 2,827 29.7%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 47 0.5%
EXPLAIN 103 1.1%
SET/RESET 901 9.5%
SHOW 15 0.2%
ADD ON (AND, OR, AND NOT) 330 3.5%
LOGON or LOGOFF 1,614 17.0%
COMMENT 0 0.0%
SAVE 130 1.4%
USE 0 0.0%
OTHER 312 3.3%
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 1,527 42.4% 420 27.5% 14 112.2 407.6
TITLE WORD 1,055 29.3% 350 33.2% 3 41.9 419.0
EXACT TITLE 30 0.8% 19 63.3% 3 8.9 10.7
JOURNAL 88 2.4% 44 50.0% 34 678.3 3019.5
EXACT JOURNAL 39 1.1% 28 71.8% 153 593.9 824.6
SUBJECT 69 1.9% 21 30.4% 8 191.0 666.2
EXACT SUBJECT 4 0.1% 0 0.0% 5 4226.8 8446.2
THESAURUS 6 0.2% 2 33.3% 763 3423.0 5864.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 545 15.1% 78 14.3% 40 5502.9 41429.8
SUBFILE 4 0.1% 0 0.0% 24 22.5 10.1
FORM 4 0.1% 0 0.0% 15 980.8 1933.5
DATE 51 1.4% 9 17.6% 15 157.4 674.4
ADDED 11 0.3% 6 54.5% 10 13.2 8.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 28 0.8% 11 39.3% 17 486.2 1871.2
CONFERENCE 23 0.6% 7 30.4% 82 1822.0 6034.8
LANGUAGE 1 0.0% 0 0.0% 78 78.0 0.0
CHEMICAL NAME 4 0.1% 3 75.0% 234 234.0 0.0
ISSN 1 0.0% 0 0.0% 129 129.0 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 100 2.8% 18 18.0% 5 88.5 329.5
EXACT PE 10 0.3% 0 0.0% 6 135.5 393.0
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% 1 50.0% 10 10.0 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 396 12.4% 151 38.1% 5 110.0 868.4
Single 2,798 87.6% 715 25.6% 14 1345.3 19745.8
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 1 100% 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 4.6%
SHORT 79.4%
LONG 2.6%
TAGS 0.0%
FIELDS 7.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.9%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 41.9%
2. First word of command is invalid 35.6%
3. FIND command with invalid index name 5.0%
4. Max. # of ports to a Z39 db are in use 3.2%
5. DISPLAY command contains invalid word 1.9%
6. PS command - no previous screen 1.4%
7. Search term missing from search command 1.3%
8. NS of SHOW/EXP command-no next screen 1.1%
9. DISPLAY command - no FIND results 1.0%
10. Valid command at an inappropriate time 0.8%
11. All others 6.9%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.5%
2. INSPEC DATABASES 10.7%
3. INDEXES (INSPEC DBS) 10.7%
4. GUIDE (INSPEC DBS) 7.8%
5. INSPEC BACKFILES 4.9%
6. DISPLAY (INS/PSY DBS) 4.9%
7. DATABASES 4.9%
8. I047 3.9%
9. Unrecognized term 3.9%
10. MAIL 2.9%
11. All others 30.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.3%
2. First word of command is invalid 12.0%
3. DISPLAY command - middle of >1 screen 12.0%
4. FIND command with zero results 8.7%
5. NS of SHOW/EXP command-no next screen 8.0%
6. FIND command with invalid index name 6.7%
7. FIND command retrieves 1 book 4.7%
8. Multi-index search with zero results 4.7%
9. FIND command retrieves >1 book 4.0%
10. NS command - no next screen 3.3%
11. All others 14.7%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. INSPEC NEWS 13.3%
3. MAIL STATUS 13.3%
4. SETTINGS (INS/PSY DBS) 6.7%
11. All others 6.7%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)