MELVYL ABI DATABASE TELNET STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 94 788 882
Davis 154 2 156
Irvine 218 0 218
Los Angeles 28 362 390
Riverside 45 5 50
San Diego 31 69 100
San Francisco 71 4 75
Santa Barbara 32 24 56
Santa Cruz 81 24 105
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 8 20 28
Other-Network UC n/a 364 364
_______ ______ _____
762 1,673 2,435
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 39 170 2,155
2-4 a.m. 33 151 994
4-6 a.m. 15 73 766
6-8 a.m. 45 143 2,474
8-10 a.m. 236 736 7,726
10-12 a.m. 389 1,263 14,388
12-2 p.m. 430 1,399 21,532
2-4 p.m. 574 1,787 26,695
4-6 p.m. 397 1,298 20,224
6-8 p.m. 137 499 8,425
8-10 p.m. 76 254 3,555
10-12 p.m. 64 266 3,524
__________ __________ __________ _________________
Total: 2,435 8,039 112,458
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 309 2,563 2,872
Davis 573 2 575
Irvine 758 0 758
Los Angeles 90 1,288 1,378
Riverside 109 10 119
San Diego 99 273 372
San Francisco 196 4 200
Santa Barbara 134 73 207
Santa Cruz 385 104 489
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 34 34
Los Alamos 0 0 0
Other - UC 6 104 110
Other-Network UC n/a 925 925
_______ ______ _____
2,659 5,380 8,039
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,262 35,079 38,341
Davis 10,579 42 10,621
Irvine 11,306 0 11,306
Los Angeles 1,338 20,460 21,798
Riverside 679 69 748
San Diego 1,584 2,937 4,521
San Francisco 2,491 3 2,494
Santa Barbara 1,258 1,850 3,108
Santa Cruz 2,517 1,470 3,987
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2,051 2,051
Los Alamos 0 0 0
Other - UC 54 1,340 1,394
Other-Network UC n/a 12,089 12,089
_______ ______ _____
35,068 77,390 112,458
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 7.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 9:59
Average session length (minutes:seconds) 15:20
Longest session recorded (minutes:seconds) 184:12
Average number of searches completed per session 3.3
Retrievals per search - median 9.0
Retrievals per search - average 1043.4
Retrievals per search - standard deviation 8220.2
Percent of searches completed with 0 results 24.7%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 67.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 7,072 24.5%
DISPLAY (excluding automatic displays) 14,078 48.7%
BROWSE 27 0.1%
SELECT 10 0.0%
HELP 315 1.1%
EXPLAIN 393 1.4%
SET/RESET 1,026 3.6%
SHOW 102 0.4%
ADD ON (AND, OR, AND NOT) 961 3.3%
LOGON or LOGOFF 3,024 10.5%
COMMENT 1 0.0%
SAVE 1,066 3.7%
USE 18 0.1%
OTHER 843 2.9%
2.1 Article Text
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DISPLAY TEXT commands 1,483
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 213
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 0
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 2,050 26.4% 475 23.2% 11 59.6 221.7
TITLE WORD 1,165 15.0% 428 36.7% 8 343.2 2633.3
EXACT TITLE 112 1.4% 39 34.8% 1 8.5 26.2
JOURNAL 392 5.0% 150 38.3% 563 2482.0 6329.4
EXACT JOURNAL 196 2.5% 67 34.2% 467 2850.8 7138.1
SUBJECT 667 8.6% 329 49.3% 596 5394.8 14576.8
EXACT SUBJECT 76 1.0% 22 28.9% 650 4914.7 18395.7
KEYWORD 2,514 32.3% 357 14.2% 53 1850.1 13259.1
PUB TYPE 46 0.6% 4 8.7% 80 587.6 2137.9
DATE 192 2.5% 36 18.8% 13 552.5 2592.5
ADDED 5 0.1% 0 0.0% 14,061 14968.6 3302.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 280 280.0 0.0
GEOGRAPHIC NAME 7 0.1% 1 14.3% 79 2665.5 6070.1
SUBJ CATEGORY 33 0.4% 2 6.1% 128 5621.2 14132.6
COMPANY NAME 86 1.1% 33 38.4% 22 221.1 624.7
EX COMPANY NAME 1 0.0% 0 0.0% 17 17.0 0.0
DUNS 1 0.0% 0 0.0% 233 233.0 0.0
TICKER SYMBOL 2 0.0% 0 0.0% 328 328.0 134.4
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 108 1.4% 14 13.0% 6 228.0 1710.5
EXACT PE 48 0.6% 8 16.7% 3 12.2 19.0
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 73 0.9% 9 12.3% 108 2142.6 5173.2
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 728 10.4% 187 25.7% 12 553.8 3270.4
Single 6,289 89.6% 1,594 25.3% 29 1564.1 10317.2
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:
SUBJECT 27 100% 10 37.0% 3 6.3 7.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 91.5%
LONG 0.7%
TAGS 0.0%
FIELDS 2.1%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 32.6%
2. First word of command is invalid 31.4%
3. FIND command with invalid index name 8.0%
4. DISPLAY command contains invalid word 4.3%
5. PS command - no previous screen 3.4%
6. Search term missing from search command 1.8%
7. Valid command at an inappropriate time 1.6%
8. Add-on search, no index name after verb 1.4%
9. DISPLAY command-record numbers too large 1.4%
10. Command contains escape or arrow key 1.2%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 18.1%
2. LOCATE (ARTICLE DBS) 12.5%
3. FIND (ABI DB) 12.2%
4. INDEXES (ABI DB) 7.4%
5. COMMANDS (ABI/PSY DBS) 5.1%
6. Unrecognized term 4.3%
7. ABI/INFORM DB 3.3%
8. PUBLICATION TYPES (ABI DB) 3.3%
9. DATE (ABI DB) 3.1%
10. MAIL 2.5%
11. All others 28.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.6%
2. First word of command is invalid 12.0%
3. FIND command with zero results 7.3%
4. FIND command with invalid index name 7.2%
5. DISPLAY command - middle of >1 screen 6.2%
6. DISPLAY command-complete in one screen 6.1%
7. DISPLAY command-first of >1 screen 3.7%
8. DISPLAY command - last of >1 screen 3.2%
9. FIND command retrieves >1 book 2.4%
10. PS command - no previous screen 2.3%
11. All others 23.0%
Ten most frequent SHOW requests:
1. HISTORY 58.1%
2. SEARCH 20.9%
3. MAIL STATUS 7.0%
4. SYSTEM NEWS 3.5%
5. GLOSSARY 2.3%
6. MAIL SETTINGS 2.3%
7. PUBLICATION TYPES (ABI DB) 1.2%
8. GEOGRAPHIC NAMES 1.2%
9. SETTINGS (ABI DB) 1.2%
10. ABI NEWS 1.2%
11. All others 1.2%