MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/09/02 through 03/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 77 297 374
Davis 154 0 154
Irvine 24 0 24
Los Angeles 0 67 67
Riverside 1 10 11
San Diego 19 34 53
San Francisco 19 0 19
Santa Barbara 2 11 13
Santa Cruz 4 26 30
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 3 29 32
Other-Network UC n/a 357 357
_______ ______ _____
303 849 1,152
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,016 3,110 31,946
BIO88 136 307 3,114
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 33 154
2-4 a.m. 11 14 35
4-6 a.m. 7 74 342
6-8 a.m. 23 55 313
8-10 a.m. 176 584 4,979
10-12 a.m. 216 651 6,113
12-2 p.m. 192 480 4,517
2-4 p.m. 215 601 6,553
4-6 p.m. 133 482 7,231
6-8 p.m. 86 236 2,173
8-10 p.m. 52 153 1,875
10-12 p.m. 30 54 775
__________ __________ __________ _________________
Total: 1,152 3,417 35,060
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 198 920 1,118
Davis 609 7 616
Irvine 76 0 76
Los Angeles 0 208 208
Riverside 2 18 20
San Diego 80 83 163
San Francisco 169 0 169
Santa Barbara 1 16 17
Santa Cruz 3 76 79
Lawrence Berkeley 0 20 20
Lawrence Livermore 0 43 43
Los Alamos 0 0 0
Other - UC 5 44 49
Other-Network UC n/a 839 839
_______ ______ _____
1,143 2,274 3,417
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,355 14,855 17,210
Davis 6,219 31 6,250
Irvine 494 0 494
Los Angeles 0 2,745 2,745
Riverside 1 240 241
San Diego 546 551 1,097
San Francisco 1,082 0 1,082
Santa Barbara 4 266 270
Santa Cruz 10 569 579
Lawrence Berkeley 0 121 121
Lawrence Livermore 0 590 590
Los Alamos 0 0 0
Other - UC 27 598 625
Other-Network UC n/a 3,756 3,756
_______ ______ _____
10,738 24,322 35,060
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 4.1
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 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:19
Average session length (minutes:seconds) 13:43
Longest session recorded (minutes:seconds) 286:54
Average number of searches completed per session 2.9
Retrievals per search - median 6.0
Retrievals per search - average 497.2
Retrievals per search - standard deviation 3336.2
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 75.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,050 30.0%
DISPLAY (excluding automatic displays) 3,896 38.3%
BROWSE 0 0.0%
HELP 137 1.3%
EXPLAIN 107 1.1%
SET/RESET 501 4.9%
SHOW 18 0.2%
ADD ON (AND, OR, AND NOT) 367 3.6%
LOGON or LOGOFF 1,381 13.6%
COMMENT 0 0.0%
SAVE 390 3.8%
USE 0 0.0%
OTHER 313 3.1%
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 1,126 32.9% 230 20.4% 17 117.5 368.3
TITLE WORD 659 19.3% 248 37.6% 10 771.3 5906.2
EXACT TITLE 16 0.5% 11 68.8% 1 387.6 863.9
KEYWORD 1,156 33.8% 212 18.3% 24 967.9 4356.0
JOURNAL 141 4.1% 44 31.2% 4 717.8 1835.9
EXACT JOURNAL 31 0.9% 6 19.4% 519 3545.3 9485.6
SOURCE 1 0.0% 0 0.0% 11,457 11457.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 17 0.5% 0 0.0% 2 76.1 298.4
LANGUAGE 2 0.1% 0 0.0% 95 94.5 95.5
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 18 0.5% 7 38.9% 869 5500.6 8236.7
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 125 3.7% 20 16.0% 3 139.8 1291.1
EXACT PE 32 0.9% 0 0.0% 4 56.0 226.8
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 92 2.7% 19 20.6% 2 315.4 1494.9
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 336 11.1% 112 33.3% 3 73.6 621.7
Single 2,692 88.9% 568 21.1% 24 742.0 4143.8
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:
CONCEPT CODES 0 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 1.0%
TAGS 2.2%
FIELDS 3.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 29.4%
2. First word of command is invalid 28.9%
3. FIND command with invalid index name 11.1%
4. PS command - no previous screen 4.8%
5. DISPLAY command - no FIND results 4.2%
6. DATE search with unrecognized word 3.4%
7. DISPLAY command contains invalid word 2.8%
8. Search term missing from search command 2.4%
9. NS of SHOW/EXP command-no next screen 1.6%
10. Index invalid in current database 1.0%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 22.4%
2. GUIDE 21.5%
3. FIND 9.3%
4. COMMANDS 8.4%
5. DISPLAY 5.6%
6. BIOSIS DATABASE 4.7%
7. INDEXES 4.7%
8. ADDON SEARCH 3.7%
9. MAIL 2.8%
10. LOCATIONS 1.9%
11. All others 15.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.4%
2. First word of command is invalid 13.5%
3. FIND command with invalid index name 12.7%
4. FIND command with zero results 7.0%
5. DISPLAY command - middle of >1 screen 5.7%
6. DISPLAY command - last of >1 screen 4.5%
7. DISPLAY command-first of >1 screen 4.1%
8. PS command - no previous screen 3.7%
9. FIND command retrieves >1 book 3.7%
10. 3 HELP commands issued from same code 2.5%
11. All others 17.2%
Ten most frequent SHOW requests:
1. HISTORY 77.8%
2. SEARCH 16.7%
3. SYSTEM NEWS 5.6%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)