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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:5 {7 r" A" K, G: Q6 X
to do-business 6 P+ |% d3 ~$ V; B, @5 b0 |
rt random 360
. Z' h+ \$ q& u' F; ^9 Z9 S( ?# S fd 10 `. p/ Q+ ]/ _: b, e2 I, q
ifelse(other turtles-here != nobody)[
; {6 s7 v% M$ D3 k" L* V   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.! `1 N7 e9 w* T# e3 M/ \
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % Y1 o& Q/ P7 _6 l2 W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 W) q5 c( s( I8 x1 N) l9 h
   set [trade-record-one-len] of self length [trade-record-one] of self
1 g, C: ~# [  m) N+ a# T) ?. r$ S   set trade-record-current( list (timer) (random money-upper-limit))" m" R/ d4 }1 _; B/ n6 v

7 p8 b- D; u1 Z. F( D, m1 f# }* g问题的提示如下:
% |7 n6 X% C4 ~, ~3 t2 B$ w4 P
1 Y$ N. i6 R# `5 `8 c7 n% oerror while turtle 50 running OF in procedure DO-BUSINESS0 F9 o8 ]$ Z, f# N) U* G% m% _
  called by procedure GO" F( C" ^/ v5 o4 |4 q9 n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" o, L4 \* C+ ^6 V" S$ r% S
(halted running of go); C7 |& o0 y. W+ Q2 X
0 ?- y1 P% F% D! v8 t1 }
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
: V) b. O! R7 k. v另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教  w; a3 s3 L) C; h. A) V
globals[
: h! }$ j0 k6 f! U6 X+ k# Txmax7 T- R7 t* d9 W6 q( S/ ?7 Q' W$ e  n+ a
ymax
/ Q; n( g8 q: Q8 g$ eglobal-reputation-list
) C. a0 O% ?2 W, F# ?
' g$ M( N: R* _' q;;
每一个turtle的全局声誉都存在此LIST1 P! ?5 T' F. v
credibility-list( ~7 V7 T3 B# Q) {9 R7 y
;;
每一个turtle的评价可信度
# r- v8 E) t( R) {+ bhonest-service0 R9 }& n( v9 i# d7 l8 f
unhonest-service
7 V! a3 L9 u# z1 S6 ^& ^$ v1 N1 ooscillation( _2 v% x" b; K" A# K
rand-dynamic: g0 Q# v; b; ^2 L
]
. M- z* L7 ?, K" B7 j, I& q$ V
; _7 }3 m- q/ [1 Q4 Vturtles-own[
* \+ I/ a' f" l* h7 ltrade-record-all
3 X! p8 ~$ p; Z, P;;a list of lists,
trade-record-one组成
: J8 c' l  Y  e' B/ x# ^trade-record-one+ \6 z6 {- v- E/ J; E
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 H6 {. [2 V1 D* v- G! W6 i: q4 }- l9 g0 m  K
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
; T( E. _: t$ F& i' A4 }6 Dtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
; T7 E* {( L2 ucredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
2 {1 x0 v4 `; b; Zneighbor-total3 T) v3 H5 o, L+ _+ B
;;
记录该turtle的邻居节点的数目+ o  l6 h& V1 L9 @  a
trade-time, f0 p% q& `4 F  X1 F  C
;;
当前发生交易的turtle的交易时间- z  ?% V# t' g  X8 b1 ^0 M' `
appraise-give
# S# f$ W# t" y/ d: ]/ O( N3 U;;
当前发生交易时给出的评价( c9 V6 X: Y9 N
appraise-receive) E# |9 M- v- ]+ W- |7 `8 y  L4 K
;;
当前发生交易时收到的评价
1 w' c$ J* Z9 o) J6 uappraise-time
" ~) J! U% o' T. t; X: ?" ?1 i;;
当前发生交易时的评价时间7 l3 W, y  j0 C& a& [; x8 w1 m0 l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( M: {, q! ^! A3 U2 Y" j& ctrade-times-total
: D$ w# e' ^% f7 n; `% l;;
与当前turtle的交易总次数
& C. s, i) l$ I+ r" p7 O) o2 E- l3 Wtrade-money-total
3 g  `9 a/ w% w* ~1 G/ I;;
与当前turtle的交易总金额- e5 Q$ r' ]8 z: {% H* K, p
local-reputation
' y& ]. K# [5 [: q& ]$ R  pglobal-reputation
( S& S. A# V2 e8 A8 l2 Y1 gcredibility8 m: E: M0 b4 K5 z2 S, ~& c2 ^
;;
评价可信度,每次交易后都需要更新
- a) O: p: R7 i+ C: y- e+ G- j" {1 dcredibility-all# g) f' ~/ n: L& H. I! y+ R
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据" \( k/ o7 b+ G4 n4 d& E

2 y0 F" `% C. Z;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.55 _! G1 n9 F0 X
credibility-one" l3 E* ^/ X- ]0 P- V4 V6 l; j6 `2 R
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people, N/ D: V0 L  P' e) \; C& V
global-proportion& l& x& ~1 v2 R+ P- x, l: F6 I+ ^
customer# ]. X1 ^5 L6 ~+ x
customer-no
% V: {3 W; V0 _% ~. U6 K- Etrust-ok; ^  ~+ W! k: m
trade-record-one-len;;trade-record-one的长度# Q1 x- G) S2 H% i4 h; v- @
]" Q* I) k4 o2 f8 }& {2 H1 B1 M

' B6 Z5 k/ F( l, d8 l. G;;setup procedure* ^8 g/ o. b4 Q6 S+ }
, p  e* }6 s; l+ ^
to setup5 R$ f; q/ o2 V( G& h" }# O( M
/ a2 N1 ^& I+ Z! H+ A# X& m0 Q
ca
$ ]/ r$ B6 W7 v- P5 a2 S! D5 s

9 n9 F- m; ~( pinitialize-settings
( r( B% `) N- b9 }+ H2 `

% |! z2 }5 s$ x6 \& y) pcrt people [setup-turtles]

. R. ]6 @% M8 _7 y
. j' k* `7 Z8 r9 _reset-timer
6 U5 v! }9 C! z; {9 H
8 {0 S% l' z6 f2 [( ^/ i
poll-class
& X9 e3 h7 e' {7 ?
+ L) B" z+ c; M% V. J! H1 W) \
setup-plots
5 j; A; Z; D* e2 t" A2 L( k2 e: ]
& ?. E& E: R8 g! o
do-plots
7 g, B0 p  o5 t3 o+ k4 r% u
end
) Y' O$ {$ u+ E9 P4 b. ~4 g3 Z1 x9 m; D, l
to initialize-settings
! A7 {/ f' d/ ?* s
# C: y7 w! \" a* H, }3 yset global-reputation-list []
- L9 d8 l- l7 g

+ N( J8 q, C; G9 j2 W+ v; Cset credibility-list n-values people [0.5]
: A  @; }9 z- [# t

* s+ S  x1 {9 t) X7 jset honest-service 0

- |/ `# \) d3 _/ |2 ~  g3 f) l) ^
  G5 r4 |! N0 pset unhonest-service 0

  }: C7 y2 }, ?! c5 o# H
4 t* ~0 a0 Y: `' H- ~set oscillation 0

) k; @" o4 z1 `% n( k% m& U% o2 u" [" K2 \+ Q# Q
set rand-dynamic 0

/ ], J: }" s4 @% M( I! K) U. Yend7 r3 `/ F% u( d  e4 E3 G# F1 j

  O: T9 l7 w1 G. Q. pto setup-turtles
; c7 I  K; `; ^' Z* V# Yset shape "person"
7 b+ h; \% a0 y  Psetxy random-xcor random-ycor
/ m( k' Y; z5 F  O' H) \" vset trade-record-one []
/ L- q7 f2 }! l+ Y2 w2 Q5 r4 f

4 s% v/ ~2 Q! z: X2 Qset trade-record-all n-values people [(list (? + 1) 0 0)] + L( W/ H) m) H  c7 @  w, ~

& x: Q4 ~( y% y: Sset trade-record-current []  _. Y9 x, N* k, Z5 K7 B
set credibility-receive []3 R0 e4 E# A" j* L) H
set local-reputation 0.5
+ k+ U/ T1 l! mset neighbor-total 0. X) t1 t3 j5 ?1 F
set trade-times-total 0
4 `  U8 `4 p$ l  Cset trade-money-total 0
, }6 y, N& K& |, ~: g1 g: C! yset customer nobody* o5 }( P+ y3 c: _+ @3 L$ X
set credibility-all n-values people [creat-credibility]/ Q# b; u( \; Y' k3 h
set credibility n-values people [-1]* l7 \0 w6 s* E7 |* g) b! g6 K
get-color. }! z5 ?( @1 V( W+ `: `8 D

' m8 v: l2 u+ ?5 z8 S! ^/ qend
& j9 N5 @, ~0 D7 P2 }4 E, E% `1 R! I' c2 i) A, |- v3 b
to-report creat-credibility  v: W$ Y  ?* o- G) @1 ~8 M
report n-values people [0.5]" Q8 J$ W" O: r% }: k
end  {3 D; u. D: |" |& ^; {6 h
# y* h( X, ~8 f  L, E
to setup-plots5 u  W. J* j* y$ F% y" ~
- b# w0 }* D' U
set xmax 30
' F) }: k1 A7 ?; j

& U% ~; ^% ^8 T& Q: eset ymax 1.0

& x$ d  w: \$ t. @) s& n* ^6 t: r/ a- H2 m6 e1 a/ f
clear-all-plots

, d/ A; E) z$ m4 ~/ J  O1 g, J5 q4 e' y
setup-plot1
* \3 ?5 z& l+ z/ g7 {9 C2 I) A

( f: b1 b' C( q5 s, _1 qsetup-plot2

& j! W5 ?0 ]4 H7 v6 _. N: n- {; E9 W# M1 G+ {( R3 O
setup-plot3

; F7 i! o4 _5 A1 ~: m2 H6 ~end0 U* x! q0 B% D: e$ a, H

' |# F- A! _) x! s4 o! n;;run time procedures" {4 f  v6 [$ a! t

& B% p* f5 B3 H: [: v' C, U0 Ito go; _/ ^' S" e% V! o- T7 M* S

5 @6 f1 h9 M2 S. bask turtles [do-business]
# b! B$ c. x2 j& W* t# ~# k+ B, q
end
9 x) f( K7 n3 [9 \# g) q8 j( z& _! [3 V1 H5 E. ^3 v
to do-business
. L0 V, ]! v. r2 N9 D1 p3 k
. F" D+ ?# c7 z3 F3 c2 j
$ W0 G' o" N! M; B
rt random 360

6 F- |: W% J! G8 n/ N$ J. i
" G9 O! n3 v) O# o9 _1 ~& v, c! @fd 1

& j1 n" ]7 Y2 [% m. ]0 M( y/ z2 G9 p# G
ifelse(other turtles-here != nobody)[

4 {( }: B% R7 m8 i- U/ s/ B. P: ^  [
set customer one-of other turtles-here
: z- N2 W( \0 J* M3 Q5 Y' T, h, }

  ^: `) ], V$ B0 \" I;; set [customer] of customer myself
# O3 ?3 W2 i2 _; w! ]+ W1 V/ X
$ }  f( ^! a2 s3 s8 f
set [trade-record-one] of self item (([who] of customer) - 1)% W$ a7 U6 n4 h) Q
[trade-record-all]of self" }( R# x5 ?/ Y& H1 O( X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( Q1 U! d4 p1 W. n2 z! a4 v4 N* J2 i( n; C" U# H7 o+ \0 y
set [trade-record-one] of customer item (([who] of self) - 1)
) U; w) v6 y2 V[trade-record-all]of customer

# m  W! ~  R8 ~% t- I' N8 Q) s2 T0 Y9 g0 S4 A+ y
set [trade-record-one-len] of self length [trade-record-one] of self
* {7 J9 G' M9 T3 H! Y" p& M

; G) L( V6 l' R: q# d% S% qset trade-record-current( list (timer) (random money-upper-limit))

6 S8 ~  a: W. ^3 Z- Z$ Q2 M6 [0 Y. v5 \; q# M4 Y
ask self [do-trust]4 D+ B+ D% }: L
;;
先求ij的信任度
9 j( S6 O1 |. y. j$ z, e+ }7 c+ }1 X+ X; q
if ([trust-ok] of self), x+ W2 R! i5 V2 M6 Y) a8 Q* M
;;
根据ij的信任度来决定是否与j进行交易[
/ t- w& }0 i3 j+ [) Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 B5 o" C& F# v  U
. @& {6 f% Z1 r% Z4 X) |
[

5 T: [: e9 c- T- j0 [/ _, f/ H" U+ R* U. W" Z5 p6 T
do-trade

$ Y, _7 _. K, ^) D* |. S0 Y. ~7 {, O1 A* N6 L! s
update-credibility-ijl
, y. W' Y& Y: [( H& v" F

  g, f5 g% y% D$ K. T% m% dupdate-credibility-list
6 x# S- M: s* S

6 L4 x$ @& c  H
0 v5 J3 f( V: n7 J/ [update-global-reputation-list
7 L: L3 A! H5 j  A: {4 L
1 G) g6 q0 Z' {; \  }! V
poll-class

; p8 `& X# [/ B$ y# {4 U  F3 q0 N' @9 y3 g  {1 t/ R4 H# j
get-color

% z: e' f( L7 P$ q# L# F) _/ M  Y! F8 `* f: J: O1 F
]]6 `' o  X) h( ^. F

" A0 m% ?6 _5 ?, g$ |3 [;;
如果所得的信任度满足条件,则进行交易( a- d6 l7 g' z- e$ p

' ]" O3 }; F, r[
+ B2 i1 W7 f$ t3 m

: m3 P  X& n  B9 C- c) H+ Grt random 360
8 D& D+ k; S- B0 p

/ |: _: _$ H/ X* `' W/ f/ Dfd 1

; L, j" A6 o8 S$ A4 U
2 @: [6 w6 k& M+ y9 p8 K]

0 v. H, _+ P% n
+ F8 ?  b* M- H  n/ ]end
- ~) ~3 O" d4 q# d. V

& r* Q/ u  f- eto do-trust
; o/ _" g) j/ e+ f$ `set trust-ok False
$ P+ C4 D( z3 \3 G* x8 e! w# A# P( ~9 j9 i  P

( H9 V" z+ S- E* F$ X! Plet max-trade-times 0
! t1 y+ J" Z8 D' Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" Q9 e) W/ m& a5 z3 |) qlet max-trade-money 0( c' }5 ~. a6 x/ W' n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 H% z$ g& ^  ^, l2 e0 P# \: N
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' [$ ]$ E# }" c5 L
9 W& a; p* k7 Z! N7 m" X; I

2 Z9 n$ ]: A! D% `" ~get-global-proportion9 Y' `4 B5 k, S  y/ F; m
let trust-value- i* A' B& v$ [: H. w3 n, }
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ s+ g5 X9 n8 Z' t
if(trust-value > trade-trust-value)  P& R- c% D3 C
[set trust-ok true]1 T8 `$ J3 U" r6 C) e4 Z
end* i: X8 x. t5 C# E! ?  E- ^0 ?% S

' E. O6 E2 e! Q4 o" fto get-global-proportion
9 R* E$ ]) E" y1 ^- uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ |, z- {8 o& m. d( _[set global-proportion 0]
* Z7 J# C5 o$ s6 ?5 @; m+ L4 d) d[let i 0( N+ v$ |4 i6 p$ y* e5 m4 N
let sum-money 0
) C& }' ]9 o# ?1 D, lwhile[ i < people]  u1 N8 Y6 r' W3 F) S+ A; g
[5 ~( l8 i$ j0 F8 ?
if( length (item i
- w+ O6 n6 e4 F( f& p[trade-record-all] of customer) > 3 )
. C  h3 h; z/ p% C# q
[
% G) h: u0 I9 Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), w  b" h$ e* O
]/ B7 ~4 [  y0 j( S3 u1 e9 e0 k' v
]5 ^% e5 p- {1 E4 ^5 M1 l( x
let j 0
2 `+ [" X- P& v: B; L: A, mlet note 0. E' J8 F  k0 h  h6 z5 P
while[ j < people]2 c# Q7 `; i( U4 `- D
[2 h7 o' X( G6 D) U% k& k
if( length (item i8 S( m; A. y0 Z- p
[trade-record-all] of customer) > 3 )
- ]; Y. ~4 p  z8 n6 q: ~: e
[
0 b/ e2 X/ A: }: Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 W2 X- w0 l1 \2 h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 R4 ?  `; _- L! C  P4 U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ c7 i: N8 J/ j2 u& R" Y" Y9 F% j; U]$ v9 m2 l5 T9 r  Z2 U' q5 s" \4 M) T
]
# n  w, c& i- J" Z! b. f. \1 s, a! vset global-proportion note6 P2 a7 F, K8 Z$ \4 ?8 }
]# S! p9 I4 j0 }
end
' u4 u* m% L; U" [# e1 G$ F) J' t" G0 F' @: {5 m: B$ a. L
to do-trade
% B' D8 Z" E  D, ?;;
这个过程实际上是给双方作出评价的过程
0 f5 C* u0 d! L3 t' _' rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 R% R7 z/ X  z, {* A$ `# I1 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. g: u* ^* E+ y) Zset trade-record-current lput(timer) trade-record-current
: |! d9 p- R6 H5 q;;
评价时间7 l$ b9 E7 D! t7 A: X" h
ask myself [
) ^9 m5 B1 c' j( ~0 f. c& \% Supdate-local-reputation
" [" b. l$ n. B, U9 G! G$ Wset trade-record-current lput([local-reputation] of myself) trade-record-current
, l5 d4 y# z% K6 D& b& ^+ e]
; F. B& O  S3 T+ J* z  t! Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 F9 H. H: C/ i1 N) T;;
将此次交易的记录加入到trade-record-one/ B( B! b& n: z  E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). U  [; u" J- S+ h  g+ O/ }8 _
let note (item 2 trade-record-current )
$ s& q8 E* Y: K1 `4 lset trade-record-current: e! P7 w- D2 ~: j9 y2 |+ B% m
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 V( }& a/ u5 X) l9 Aset trade-record-current
  m. p4 m0 m+ q9 }(replace-item 3 trade-record-current note)* T0 x# ?% v" \( ^
7 x  }! [5 e8 r6 o; M3 [7 u
& E& _" X; M* i* v5 T' G
ask customer [; r8 r. l# |0 r4 T( j* u- r) v
update-local-reputation
4 E0 k4 {7 f0 G) Mset trade-record-current
  V! D& n2 X6 b0 k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 D+ E: Z& p/ H# q$ e
]
7 V0 q" [3 U5 m. w* Y* `3 {0 v6 d( g
0 ]! e# w- H/ W2 l
# J. P0 ?+ o: G2 }3 P% _  n8 j8 `0 B8 j
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, |% f( B8 ^+ @( b  R& I; Y; b; ~

2 D: `2 H4 o' o6 U: i( Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 @) S4 V; W, R; W;;
将此次交易的记录加入到customertrade-record-all
3 f* \: z3 T2 @% U+ ?) Lend. D3 U7 z" G4 s' e, K! ^: r

9 B7 O6 Z( m8 C2 G1 ~to update-local-reputation
7 z6 O+ v) E$ ?6 p7 Lset [trade-record-one-len] of myself length [trade-record-one] of myself
$ i; g4 L, R' ]& f7 F) L6 d  S: a! N9 O5 ]  X
% }2 ^! W& L7 ~# `! h
;;if [trade-record-one-len] of myself > 3
: r: A' w# {& O0 U7 {3 k' J
update-neighbor-total
  m3 C& y# z; J' q;;
更新邻居节点的数目,在此进行! i8 T) ?( K1 K2 x" r" O1 u2 E
let i 3
+ n, K. e7 F% x# o$ l$ ylet sum-time 0% l2 |: y  r% {' ^' d
while[i < [trade-record-one-len] of myself]+ s; V* v. H2 \+ r9 Z" ]
[% B+ Q8 ]2 p5 i# c9 |& Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 w: F4 J0 T7 u! q* U8 S
set i
) @7 u! C# q7 r# L4 i5 b5 s4 [( i + 1)

6 k; M: _- Y1 b* P! @% q$ G]
8 j5 W- c. ^6 h0 dlet j 3' b; `8 b! Z& v4 k) P$ C
let sum-money 06 s2 {' h/ {5 ^0 ]% R+ Z7 r/ L; f
while[j < [trade-record-one-len] of myself]# ], M2 p& T2 U0 h3 X) `
[
' o& T( L* c+ V3 r/ b# Kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' y: h+ `+ Q- j% }
set j' A! r4 ]% W$ H% z- P
( j + 1)
( r& f4 a7 B% K4 O  q' u* z. I
]: T1 ]2 Q( `$ l' H! j4 I5 `" ]3 ~
let k 3/ G. ?$ ]* a( D% l. {0 N
let power 0
% l" _$ ~! q* O' w2 O$ i0 K+ U) v4 {+ r0 Vlet local 0; U2 _4 S# G1 a
while [k <[trade-record-one-len] of myself]
7 }' ?% {9 o9 ?6 O" S( J# Z[4 \6 F" g9 y: R( J$ T3 p
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) , `, n0 [5 n) U  \& z- j) ^. Z
set k (k + 1)
  |% u1 S% o) m]$ }, w4 X+ h* @# Y3 {
set [local-reputation] of myself (local)* s, q- T2 [- m# I/ r$ |* K# E
end
- a! Y) `' S. }7 z
% a. v' p. C& ?9 T1 uto update-neighbor-total
6 }) D9 `- t( s+ o8 e1 A3 `( B9 c1 X
5 j. F3 h/ P8 @: R! R. T( B- Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' k2 \1 C/ M! [, J+ ^  p
2 t+ M1 L7 F9 |3 P; ?& {/ s

" N- N! Z; K* F# Kend
* {9 ^3 G0 I1 c+ x0 ]2 w2 k4 h2 S! X7 {1 ~
to update-credibility-ijl
$ o) _( x" j2 l' q5 b/ ?- k5 J' }; |/ o' k9 ^
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。  |2 a6 K2 }, n" o- w7 J2 v, N0 s
let l 0* N, X6 Z- M# b* z( m
while[ l < people ]
: a5 h" B% ^5 n' [% Q" Q3 l8 q;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
# P( a: t4 ]0 [$ _2 ], F+ W$ J4 U[2 J1 X# C! Z/ `9 O' f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); p# @* N8 l, [3 h6 V8 ]! O
if (trade-record-one-j-l-len > 3)- X( A8 l5 ~  j
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one. N! W) X* m! o
let i 31 I6 G0 z) l# C" u/ ]' d
let sum-time 0
: r/ U4 z: i6 P: K' `7 U$ vwhile[i < trade-record-one-len]+ W( @. y0 R. S; @& f
[( [& A, u3 [4 ~3 N! s  i
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" m$ M2 k5 v; r& Yset i; ]; [. L  n2 \& t2 t7 ?
( i + 1)

. P& i1 \2 e: D& G" a- x]- g  t7 W; c! I9 m# x" B. h  _
let credibility-i-j-l 0
  H7 f0 y( y8 F; K;;i
评价(jjl的评价)% Q! j' G; @6 T3 H' _) Y' a: N5 L
let j 3
: z; V" d- ]3 I( qlet k 42 q- g4 Y8 @; F9 b
while[j < trade-record-one-len]
+ I4 |. n2 Z. r3 i2 ?+ j2 d[
# ?% P. ~- K1 R7 d0 @! ?  Cwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
7 G4 J  Y8 b. Y5 s8 pset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
7 x( R  t" y" @+ J* Z- sset j
. s6 |, ~7 k/ K; i( j + 1)
3 j" E4 w1 Y1 w! o; {6 ~
]5 _* k5 Z% c1 g% U
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))4 h8 l2 \5 R% X
8 h5 o1 W  r* [% ^) ^7 p- X

, j+ F( m: F% [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( O4 D0 s$ Z$ |9 U;;
及时更新il的评价质量的评价1 R. M2 J7 }, d5 x- K2 ?
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 H. W0 O' I; Z
set l (l + 1)0 X' I+ l* G* w
]; D0 \( R! n# z
end
- ?' c% U' L5 t8 o" k9 K
) p( F0 s/ ^9 n7 _6 m) a' Ito update-credibility-list! E8 H9 X, g  ~. y9 _9 W
let i 0/ |; i/ W" s! W5 {* t
while[i < people]
- r9 v  g. ^* O' G: _6 [- r8 O9 I  g[
/ S; \3 u, f& k' n+ Q  {: K$ \# zlet j 0* R* q& S$ x/ @. t+ M. m) e
let note 0' ?) d1 w9 H! t' C
let k 0
2 ]. s. p0 k; l/ q) v8 S;;
计作出过评价的邻居节点的数目6 z% f6 |% m4 V: ^1 M1 {
while[j < people]
6 x# p2 {+ W# j2 q7 I1 k  J* m[9 H/ ]5 A7 X- u# U2 q
if (item j( [credibility] of turtle (i + 1)) != -1)5 W& u5 i7 k" {' \
;;
判断是否给本turtle的评价质量做出过评价的节点
! p7 e7 Y6 ^5 G" d1 ^[set note (note + item j ([credibility]of turtle (i + 1)))
7 j, D  @; ?0 G;;*(exp (-(people - 2)))/(people - 2))]

+ c; a* e9 ~7 U( G& U* Aset k (k + 1)
0 z! K% h7 ?$ L7 C5 A8 w% x]
9 b7 F* b) T  s, J; h. I6 P7 X9 Fset j (j + 1)$ E( f% t$ [6 e# Y
]
  V# _; C. B5 A3 T5 L2 Tset note (note *(exp (- (1 / k)))/ k)9 r1 r0 |( @) E1 ~2 s" B# K
set credibility-list (replace-item i credibility-list note)) ^5 P) ?& p* u# V' p, I) O
set i (i + 1)& {" H8 ]8 M/ O1 }
]$ r( W2 C" n' ?# r1 e! J& E
end7 T( F& A* s3 @! L3 G5 j

9 E5 f+ _  d3 yto update-global-reputation-list( @" q- y8 I( l9 D2 g
let j 0
3 O$ H2 Y% ^, T7 J6 k& Vwhile[j < people]& F2 v  P: F$ L/ Q8 t
[
# s  m' t: @0 e' N% T5 @: xlet new 09 e( h8 S7 q6 g: x) }  E
;;
暂存新的一个全局声誉
2 D) U) c% _2 \' g) p$ [$ ulet i 0$ R) p8 k# X. \  @6 A- d
let sum-money 0
$ k3 a5 u& K: w! X2 V1 ?let credibility-money 0
, |# i$ m! `/ H  lwhile [i < people]$ O$ p" U( |: o% k! v: j8 L
[
! j- Y: e3 K! @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): w0 I3 M3 }5 A' t6 E- b+ L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ ~6 H4 J) i, D7 m+ F4 nset i (i + 1)- U3 F9 z, a- B" |. D4 _
]
  T! O* L! J! L6 M) q! ^6 P  Xlet k 0
, g* C, }$ |2 A6 b* Rlet new1 0
# [+ U1 Q9 Z7 U. z' c4 M: R. dwhile [k < people]; `4 H! @" k5 s7 T/ {- I
[! c: U  J% T( t. b
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
' t1 r* o/ x7 Y8 z$ bset k (k + 1)9 {( f6 a( v; U6 |. n
]
& I! H9 K/ D, J4 I4 mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 R! W( a) R; m/ J
set global-reputation-list (replace-item j global-reputation-list new)' ?4 b* V' a4 H/ R
set j (j + 1)
, I1 _( ]9 q8 I- R/ b3 T1 f]4 i& f) g5 H4 q6 h
end
4 h$ m. }/ D5 C/ m  y: L9 @. Z2 ]. E' A7 p" a
. T# c6 Z4 m+ B' }8 x  l$ k

* w* K, A+ }1 \1 t/ uto get-color
$ \4 q7 R- F+ H, @& ]6 ?! }$ P" f1 r& @. }
set color blue
1 O* m$ I  U" r" E0 G3 V
end+ |. L/ W' f2 J/ x
/ p& K  C- p3 S8 g: D
to poll-class
; |+ J& L& ^" b, b0 S  q6 Jend
! H) A# U+ m1 `! H3 E6 D5 _0 o. a
  C% D3 U9 R& e5 Lto setup-plot1- {( H, t1 s1 ~; K' Q0 G. }
; a3 @# \. H. f; e8 x
set-current-plot "Trends-of-Local-reputation"

5 ~7 B; d2 x( a. \1 r7 Q
1 ]' r' u4 d: o+ N' X% y" P, Cset-plot-x-range 0 xmax
; ]7 ~" B, p( P1 D
8 o/ ]0 J. n& e5 [8 w* h
set-plot-y-range 0.0 ymax

# M' J  ^8 g& m$ Rend4 n) e1 H3 M; [6 h# @! U+ L4 e

9 ]+ V  _2 i. ]0 ?to setup-plot2* y; r4 ?# a& v8 z7 B! Z

8 r1 t! U# Y6 Cset-current-plot "Trends-of-global-reputation"
' s. D" A) ^: s: H9 [
' g) c2 [7 V7 p3 F7 w& c6 B
set-plot-x-range 0 xmax
* H" I/ h# C& Q% |+ Q! ?
' L4 J" `7 {! l. O% g3 `
set-plot-y-range 0.0 ymax
7 g- U+ r) R7 x; D' @
end$ |% l4 p# Z/ @( [

! E1 z5 D$ ^/ o1 ito setup-plot37 `6 z/ q* T. j: o, g
' l7 [/ ]# r8 `: T" u7 g6 r* f
set-current-plot "Trends-of-credibility"
5 Y1 H: {  ^7 m5 F7 M; s+ g

" N+ y* i) `7 [( gset-plot-x-range 0 xmax

. `! N0 K- L8 H2 N- A- b' g$ W4 }. e/ [6 E, g: A7 ~9 G
set-plot-y-range 0.0 ymax
* u8 g0 y* H: S) s
end
& q0 `0 M+ r: V1 N& F1 E( z" {& K* \# L2 h4 L9 F4 \
to do-plots
# a* \, J1 I4 P% }+ J7 bset-current-plot "Trends-of-Local-reputation"; h% M: ^: f) M0 \5 z- Z
set-current-plot-pen "Honest service"
! \9 \! J0 ]5 f3 ^end
. @' g% z5 B) w( R# [/ C
  O) o! [4 v; K0 e; y* I[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
! z2 W6 ~9 v' Q; L( D! }: Z9 b4 ], G4 F( E; H2 H3 d- O3 L% a
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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