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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:& Q, y' z! W; X! t+ l
to do-business + b4 T" q* L1 }" W
rt random 3609 z/ }$ N, R2 i- u, O' s
fd 1
( y+ M6 Z, }, z. s# N- M/ b ifelse(other turtles-here != nobody)[! s9 B; P) _  Y' z6 w9 Z; H) [7 h
   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.
, l% j2 B6 f% S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ s3 R, Q3 v  J' S0 u8 p, v   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& M# Q) i) \1 Y  P7 v5 K   set [trade-record-one-len] of self length [trade-record-one] of self- V* z- A2 w9 N( |: o$ L
   set trade-record-current( list (timer) (random money-upper-limit))
" S) ?; Z' R% [8 I5 \( Z, H3 m! o
& R* K$ e2 T8 F7 W. d" b, n8 D问题的提示如下:
7 s! P; Y/ ^# t6 R2 N9 D% l6 l" `, I
error while turtle 50 running OF in procedure DO-BUSINESS5 f0 S+ V3 d5 Y( X- f
  called by procedure GO1 Q/ y( f3 @. W* E5 I# P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 P% v  Z. _6 ^% z% w9 u
(halted running of go)& p$ l* U. _( y3 ]4 w+ a
3 h: N+ s" q2 g  t- l. y6 X' d
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~~! o& i) E% B- |2 W* j2 L3 A
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
7 `' I: s4 \0 f5 Y! C- lglobals[5 O! k' \4 q/ ?( D6 k! V
xmax
# @2 Z7 J% i7 L! ^  ~+ m% Nymax
9 I" ]2 e0 }  _7 d! gglobal-reputation-list
% C* g2 g0 G& G/ f& x6 Q
( w* C6 r; ^( };;
每一个turtle的全局声誉都存在此LIST
" s+ Q  A& S/ Fcredibility-list
' k; T" ?7 K2 A" B" \3 A9 w;;
每一个turtle的评价可信度. `: G7 k$ |+ e% I2 k/ f4 X
honest-service" t* H/ _6 c& r% I! {
unhonest-service
: H$ `4 L  d) A5 doscillation' n% y9 i9 n9 \
rand-dynamic
0 U# U' P: o; R3 b8 f0 A]
  ^, }2 j! ~& z2 C7 r4 R5 E
2 I9 i! f( b6 `9 i/ h8 Aturtles-own[# S( a+ Y3 }; r& k
trade-record-all: x/ X! K5 }5 y$ N) |
;;a list of lists,
trade-record-one组成
- F( n  A& w/ {trade-record-one
& l( v0 T; ^, Q% s$ l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  Z6 k$ [8 f4 t$ U# O
7 w9 U6 e1 a& L8 ]4 ^& i4 x( e3 u
;;[
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]]
' x7 O6 ^9 p! E5 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]/ J# ]7 h+ u6 \( c8 H4 j
credibility-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* U, B; b  r% o% f2 \
neighbor-total
1 c7 J& e$ r3 s9 S( L0 o! P) j0 r;;
记录该turtle的邻居节点的数目0 \" D/ p: d7 h2 [. G
trade-time
& s  x" \+ d4 E* U;;
当前发生交易的turtle的交易时间
, v, d. l6 r4 C, a4 d* T0 ~appraise-give, l- q  K8 c2 r" {8 Z7 t' ?0 Z
;;
当前发生交易时给出的评价
0 Z; r8 h: K. Z( M0 pappraise-receive
) w9 F" M2 n) [5 S;;
当前发生交易时收到的评价: V$ W. ^7 Z. P5 X
appraise-time
' p; l5 f4 m6 j;;
当前发生交易时的评价时间
9 c) u3 u+ {% W2 Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* J) C  Z, O* m' Z! c3 t. q
trade-times-total
7 C( [; a" C0 t;;
与当前turtle的交易总次数
, J5 C) ^4 t* M4 A) ^! N: b/ ftrade-money-total
2 |& P. e+ ?& O" r( C1 `4 H% x;;
与当前turtle的交易总金额
% F* [0 {+ g( a/ ?. _4 {7 g& u" Rlocal-reputation) d5 {. I: h. ]5 R+ ]' x. t  M0 K
global-reputation: |4 f8 V9 A5 J; y" z  b& B
credibility# c1 G8 q# b  s/ w4 X! M
;;
评价可信度,每次交易后都需要更新; R3 p6 i/ \" j7 V* X$ x# H( J
credibility-all
" i! A! ?, z0 `1 ]. C& z;;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6 B+ i6 Q( k1 A) r  c, G# Z
! Z( b7 r9 N: o" D3 H
;;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0.5
; _# M  L2 @! U* Rcredibility-one
" d6 F- ]! Y7 S2 l" |;;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! A3 U; ^# r; B* b
global-proportion. z5 h) B' K" F% |  t# _, c! ?
customer" ?, o$ p2 Z' l( u1 }; W
customer-no) o& h# T) I9 V! f# A! R3 [8 p" P
trust-ok
4 b6 k3 O7 u2 O- k' z+ j/ q% c( rtrade-record-one-len;;trade-record-one的长度
# @! d; _7 ^8 i]
8 I6 E  d$ {4 y9 p. [; N/ I
+ W- Z, p/ W0 f3 b( X4 A  z0 O;;setup procedure. ]  b# N) l- F5 n* {6 Z

  H& \  ?, Y6 e& n  K  Mto setup; x$ P. w/ I/ U2 q5 R# x/ I& G

+ b, M3 U* w% G/ {+ L; r7 |ca

! T: x) B% f: R- W! Y# g; q# i2 n% p  X3 [  L2 C
initialize-settings

) L+ w/ G2 [1 T" ^2 x) V- O7 _- @) g6 r% O* G6 ?1 Z8 B7 L) y; x, H5 {
crt people [setup-turtles]

+ a) i- I( m) \# l) q
  \6 G8 Q. z1 Wreset-timer

( d- D0 D& {% `. I
. S6 ^# z0 [! tpoll-class

& l! v; R5 o- S  T" \  B& D9 [2 I2 ]* B9 ^- z1 ?- _% k# X4 p" u
setup-plots

2 x6 f: r) v: a  _( ]
4 j0 y+ G2 j8 Wdo-plots
% ?! N: v4 P7 `% }: i& b% A7 {
end: w$ o5 Q+ v- O- Y1 o0 Q( i
( g! p0 K% x! H5 q
to initialize-settings( D) J" q. o+ O1 N- A' q7 H, {( A
/ z' h: |( e8 F! x( i
set global-reputation-list []

, I, t* k$ x5 S. o% Z" ]% V( {2 H8 @5 P/ e
set credibility-list n-values people [0.5]
4 s# g7 _* }/ Z9 s
3 N; a  `9 \' R4 q' p
set honest-service 0
; k! W2 r  |' Z5 ^: P! K; j. Q$ q

1 C# i$ P4 ?5 `6 D9 zset unhonest-service 0
0 _% q7 j6 N* F* t8 |. ^
9 p& ]8 }# `( r  A
set oscillation 0

9 P: o2 d3 l+ W, Q1 p, X
( D" ]; u# P0 z1 ?set rand-dynamic 0

; K0 w0 \; ]( \$ D$ v1 q' ]/ Y6 Yend% d: K* y  d- d  ^$ ~8 Z2 M

; P, r4 Y$ }; O" S! u+ _to setup-turtles
! ]5 T+ Z$ A' L: d, yset shape "person"
6 G. p6 R; h- N& e+ b! f. }setxy random-xcor random-ycor) [% P0 H, O1 V5 `7 A- q
set trade-record-one []" D6 }: C' [& l3 I" P$ t
! p1 |3 S! A- B
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 i- }* P4 n7 a1 G  u5 O
3 ^2 h8 D( f$ P8 @7 G$ ?
set trade-record-current []  Q. Z/ b4 d( z+ ]8 T) C) j0 q
set credibility-receive []
3 w- E/ \! u2 R7 Uset local-reputation 0.5
* f" t; P3 H# S2 ^8 n9 Zset neighbor-total 0
# y1 r& U  Y8 l8 V+ }4 y# vset trade-times-total 0
5 v0 X" [+ x& eset trade-money-total 0
8 J2 w* ?3 f( x* G& g, iset customer nobody0 [1 L' o  \5 l' P2 N
set credibility-all n-values people [creat-credibility]
' {5 a  a8 q& l! g7 }1 q: K/ O" ?set credibility n-values people [-1]8 l, P. B# y$ h  D9 V
get-color( M' O: i9 L) d

( o; x- y9 t* y% H# Dend
4 ]& C3 D# n% ?7 B6 ~9 e
' O. x: O0 ~; I( e/ F( qto-report creat-credibility
4 o  N7 i4 q4 B" Q% I. ereport n-values people [0.5]3 W9 b. x: \7 F9 W5 d
end) i4 {$ o! C3 S" W% r3 s/ ]

$ ^( g- g3 B7 q( `" _4 ?4 f6 Fto setup-plots' L5 T, F. V# c& D" w9 a

# n8 g7 {) K; Y/ nset xmax 30

4 y+ b2 R, }5 m. `' f4 X7 x+ k3 p; k" E0 O; W/ W: J  c2 ]4 n$ U3 {2 K
set ymax 1.0
( z& ~" U0 s. n

& B0 k( n, z3 ^4 r! [& Oclear-all-plots

) e7 j6 S/ \: g( F+ ~% w7 O0 A
# I- t& `5 e; o# Lsetup-plot1
9 y+ h% \. ]$ k" S5 L# n! U
, o6 I* W* H8 L' u9 g
setup-plot2
1 q/ M+ V' y* R: ?+ w. S# W
: ^( f6 E9 h5 F7 J3 `. }
setup-plot3

! P' A- K3 e" l. P+ y8 Pend
9 ^9 v# h+ f+ C3 `( j, C! B: e9 c4 ~0 a; H9 Z( {
;;run time procedures
& L% h7 d% e; o3 U1 Z! L2 N! d* l5 {- j7 X4 r
to go$ j3 ^) c% n1 X( L
- _6 e( `, @( r: E# e3 u
ask turtles [do-business]

" j2 _; y- K7 m4 R0 V; tend
9 O0 P* U( j1 p3 {- R1 y- \. D; {
$ d6 N' N5 c: Z5 V0 P/ Wto do-business
5 m" Z0 `1 r, v: T
6 R. ^4 u; y' \5 N' k6 n& d6 D0 J% Q

: @0 B0 r. n  A# S, jrt random 360

0 q$ c! d& k) q# e( W6 W' ]; l) H6 ~
7 A5 G9 u( y' nfd 1

6 R$ J( Y. {0 g5 x. d4 j. X- i0 `4 \+ K+ k9 N7 r
ifelse(other turtles-here != nobody)[
6 p" V& m0 u6 G
3 K0 P: b0 J( m2 D3 C! ~
set customer one-of other turtles-here
0 Z% }1 X( ~5 Y7 e( a
1 P8 |# r9 @! ]
;; set [customer] of customer myself
, c8 h0 Q& |2 p. X" j+ @
/ |# v  o, B% x/ s8 |4 S2 b0 ?# T: l
set [trade-record-one] of self item (([who] of customer) - 1)
. r5 \6 \' E$ T% F7 }) @& n[trade-record-all]of self! V  D+ }& Y  ^5 ~# G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. k5 e) k6 }, S
" I; `% o  e0 O) _  N' I  s5 rset [trade-record-one] of customer item (([who] of self) - 1)
2 J+ W/ x# F# O4 B. M4 i1 V: k' u3 R[trade-record-all]of customer
0 W5 Z3 B: e9 j- S" ]' m
& c# ]3 W3 \/ x5 m
set [trade-record-one-len] of self length [trade-record-one] of self

* ^/ ^3 ]+ {& S! E$ L. K# j
$ J; q0 i" z$ s2 X6 D" @3 n6 G9 @set trade-record-current( list (timer) (random money-upper-limit))

/ }0 C# Q3 q6 H* n% }4 \. `1 _6 I: s, E, \+ R
ask self [do-trust]+ G4 G! e. H8 H% c3 l9 }- B7 u
;;
先求ij的信任度
# J" f8 ?9 k( }" ^/ I, j% R1 p! u
( n5 [0 \5 N  w7 G9 f0 s8 wif ([trust-ok] of self)
' Z- J* ~. h1 g) s# T0 C;;
根据ij的信任度来决定是否与j进行交易[
. B( B, {- G) I! R0 z0 s3 n. ~) vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  D# u+ v- T: y8 P
3 f5 I- Y/ p" N" `" W* a[
4 h2 s3 p% E& d0 ~. @* Z/ |
) [1 `: K2 R1 W. G' F+ D1 T
do-trade

$ [. T3 x+ n$ H, D' ^, P, Y0 L6 S8 n+ {" ^4 k3 H
update-credibility-ijl
8 L  ]! _* T* s" u: m
0 U1 M1 U3 E; ]  z; s
update-credibility-list; {4 h# u4 M0 e# C
8 O  c- i, i1 t% L! d
% |+ F9 X8 A+ q2 V' E6 k+ `% x5 |' w
update-global-reputation-list
8 H3 K! [6 _6 `; N5 M; U9 E
! Y0 Q/ s; \1 w, o4 D8 \7 e* D( |8 N+ h
poll-class

) R' O3 R+ s, ~% f# H
- Y+ h0 E# Q% A9 U; s; Mget-color
8 ~. D8 n: L0 W
! p* q1 m' m% k! }. D$ g4 x$ u
]]
8 j8 ]! f6 f) w$ O; _$ s' ?* I8 d
* J7 p) d0 K, O7 y8 x' d+ V;;
如果所得的信任度满足条件,则进行交易
& x2 h- b5 m( H. J2 k) U* h+ m% {1 N% z" i1 s
[
- P0 x# ]1 H) X7 |" K' j5 G- Q

( o9 \2 U& J. crt random 360

8 u$ ~0 ~" t, r' A* x% {; b1 K% p' [. x3 t5 H
fd 1

- i# m0 m; Y4 z9 q+ S5 f! L+ }5 _: b$ P: u% E
]

, ]! t; p' l+ ?' ^7 L, H: ?  E' ~2 S" b2 r* U# x) o
end
6 ?, q. m' D' `9 y$ W* x
' b% b! v% W; V, l! s% I" y
to do-trust 2 X, _# \/ |7 w" {) r) {4 R) y
set trust-ok False& c$ Q" W' n9 V
0 s8 ?) V, k: c, \) K1 e
; W0 D% |; {5 N9 A
let max-trade-times 09 v" F# x( y! \+ s# W/ Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* N: `' y8 z& p  x. Q. }( F; Tlet max-trade-money 07 J, ]5 p. i, v7 M5 j2 B6 G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 t+ Y" M4 w5 @3 B$ [$ llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ u  V. C# z8 c0 j( N% L7 y
; d2 Z' y8 G" M& ^
  ?' [+ X" p: e- v7 a
get-global-proportion
2 U0 Y! [2 x3 E% Flet trust-value+ G( v% u% o  t& o4 I
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)
9 m" a  m, T5 x( J+ _( C- Z  V' Q1 o
if(trust-value > trade-trust-value)1 n* Q8 l3 Q4 k, g/ T6 L" r1 I9 E6 `& `2 D
[set trust-ok true]# c5 P% ~3 X, f' h
end5 o/ D+ @" A3 u, C- P  ~. f- ^& z: P$ [. `

7 s3 b' w+ }4 ^+ H7 Uto get-global-proportion
& A0 x& o# i' E' h8 g8 J  Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), M  ], D' ^# u0 e+ L  H7 z/ S
[set global-proportion 0]
+ \+ u! [) P0 Y+ x) Z[let i 06 t0 U% ?+ s4 }
let sum-money 0
; R9 }7 g, k  n6 }: D; Fwhile[ i < people]
  {; @4 ^" @9 Z+ W; h[
  N/ Q5 ]; ?& w  c0 F( }! O4 yif( length (item i
5 A/ r( Y" G' M& D! \# Q/ X[trade-record-all] of customer) > 3 )

) j) l/ l8 v3 r. e  f+ S) H[
6 u+ H" Q8 M- iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 m- J3 d* G0 W' w0 ?; N1 T
]
% e, A( C6 L6 `1 T! V; |6 ^9 []% d2 g" Q7 V$ P3 `* `
let j 0
$ K" e% V) t* Clet note 0
+ w& y* v" N/ _while[ j < people]
" G% |( Z: }* k: X[' o; E4 G& x# H+ Y
if( length (item i
" ]* H7 Q) M6 M' a& c[trade-record-all] of customer) > 3 )
: f" Z1 S- N& e& O# G% q( W9 C
[4 _# _" \& N7 S* ?8 ^4 d, Q( i6 ]. f
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- W0 z- |& n' K- E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 p- e* N! V, {) u' V+ G
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ n6 ?! t  k4 H! H) f! M]
  r, J  D' P4 B: j" `: Y]
( L3 E; U# H# Y+ x$ @set global-proportion note7 t: [* _* w" G4 y) N
]5 W- P6 v1 \6 _: P
end3 j1 D4 E: j, b

0 u% E3 e$ ~% B5 uto do-trade
) Y1 [( B; G3 }: L;;
这个过程实际上是给双方作出评价的过程
2 p% X7 T( G: v( k. lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: q' z7 K2 V9 o; q1 ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ }/ |: U* D+ Q# Y; T1 f: Rset trade-record-current lput(timer) trade-record-current- D7 `. M, J+ @/ J) N' j
;;
评价时间2 C5 V# X/ N$ p
ask myself [: |4 w7 |/ L1 f5 V6 G% d
update-local-reputation8 A! F7 z9 f+ N( D+ w- P- D
set trade-record-current lput([local-reputation] of myself) trade-record-current: L6 O7 p" K0 Z8 b6 Z
]
. f1 G8 u4 H) e" Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 N. L5 T- {0 x8 H% r8 r9 l) `
;;
将此次交易的记录加入到trade-record-one; q4 l# b4 k5 C; O0 m6 Y% v, j  y- i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: `+ j) N5 D) E! I' a% Z& Zlet note (item 2 trade-record-current )* X7 `* a; t2 X' k1 D/ \0 u1 q" z
set trade-record-current
2 c% m$ y6 I% X" b% Z(replace-item 2 trade-record-current (item 3 trade-record-current))
; H. S6 h2 ^! E1 h' S4 E/ l
set trade-record-current  F% y. E* X, _0 c. ~/ Z
(replace-item 3 trade-record-current note)
4 R% M9 Y' h! }! }( ]2 \- U: R: P

  @6 ]* I- S1 U1 ~- v' L, N. ?( ?ask customer [* c/ O. b) f) T6 z1 Q: b+ r
update-local-reputation$ l7 t/ Z+ M! R7 o, g' e8 E; b
set trade-record-current
, U3 Y. T7 L' X" O0 e* A5 W+ i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. O+ a- w( P3 {]
# Q, E; m& P! S+ ~. e% ]/ H1 H9 U$ ]. `5 I0 {8 y# ?, v' y9 l! n
; r5 A, z& ?+ }' x4 Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: v# Y2 ?% \5 ~& _7 f
6 R  K% u  a8 l+ G$ U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, k4 c- C! B4 W' w2 [# F# H;;
将此次交易的记录加入到customertrade-record-all* j4 [- ^' Y/ K. V9 M/ _) B
end6 u. f* _+ q6 z( ^4 m- j
) a' O, N# ^; {
to update-local-reputation
- G/ ~8 Z& F' x2 ~' t1 k+ Pset [trade-record-one-len] of myself length [trade-record-one] of myself
4 C! U1 i5 p; Y; b  c- _
2 S" T( n/ H  y' y
% ^0 h, I' w3 c; B( ~;;if [trade-record-one-len] of myself > 3

! n5 N0 S: Y! n/ D6 nupdate-neighbor-total
2 y8 g  t" M  h) u$ C;;
更新邻居节点的数目,在此进行' P% R0 D& Q; R6 @9 z3 o2 ^4 x
let i 3: M/ r5 G7 b/ K% T) c) E
let sum-time 0
: E. W2 v$ a5 h) C3 I) i2 _+ Iwhile[i < [trade-record-one-len] of myself]
. ^& e% @  [+ n$ m1 _8 n; Q7 b[
5 z1 Z; E! j! f: m, |7 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 Y' n1 @' i5 u; H
set i
7 b% X0 D% X& r) I# [7 B( i + 1)

( a. S2 k9 Y) E9 m" a% i]
/ b% z; _3 A1 z9 t, f0 {- hlet j 34 a9 k" Y7 L. @4 d+ U: s
let sum-money 0. @- C& z; U9 ]& B
while[j < [trade-record-one-len] of myself]
2 R5 o" u& q1 A( e. V[
; [1 R; [" q) ~6 uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! d9 W$ s! D; f( H8 ]& `  Rset j
6 ^# U+ p8 b; T3 N/ z5 Y8 x# ?  z0 y$ q& t( j + 1)
! F+ z, l- v0 a# m3 O8 ?& u5 p0 S
]
) \" o' N/ {' Z) flet k 3, e; p2 y* y$ \0 K/ S; P: X: ]
let power 0' P3 p- t( h/ x3 R% J
let local 0
% K( |1 S' i2 g+ ]" }0 A, bwhile [k <[trade-record-one-len] of myself]
$ `" }" a# d( [[4 w1 y; u5 Y9 R( \& Q& w
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) . L2 t2 W* D, v
set k (k + 1)
8 Q8 S; G: A9 t0 U9 c' R+ Q- L  Y]
, w  G6 e* B1 X* O. R2 Z# V0 t* Z" i0 Dset [local-reputation] of myself (local)
5 h( _; I. G; D; D) j8 Yend
, @- |" o5 e1 t4 ^$ i. R3 a. i$ Z, ?3 H
to update-neighbor-total6 D% m; s! h! a( R

% `% q9 q9 T! W5 g" ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 l0 W- s! _6 B3 M0 y4 Z& S6 w& r% {- U- X" C
+ T- t1 D, [; x, y" K
end% A% [* g* m( \) T; u
8 i% z/ n$ ?+ F8 z7 Z) K! N
to update-credibility-ijl : }, u' N( C- T! k* I6 \0 ~  V' W
8 V5 @8 u" Y/ R: z- E
;;
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。; w; {& U4 P: _# n& I! X, ~" V) v
let l 0
, ]- N; C: K4 W7 a6 Cwhile[ l < people ]: N3 W/ L: w) f9 o8 F2 A$ M) y
;;
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
& Z! {" A) Y9 S/ ~[, N3 U$ k9 K; P, ]
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* ~8 k& w, C6 v% \if (trade-record-one-j-l-len > 3)
" _0 F/ P: {$ S. A! s! s6 \. \, R& q[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
/ ~# _6 n2 [/ e; p" n) R3 v; Tlet i 3
/ d% D: V* m& @let sum-time 0) j. n# z( z& X/ w2 i
while[i < trade-record-one-len]0 e4 f# i, Z& r. _! `0 j% v5 @5 C
[' b! l' [& M8 j, A, C6 \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 j$ Q, _0 |% U4 w' \set i
2 t( a9 e# w1 i3 s$ r( i + 1)
# c6 }9 v8 ~  D# D$ i3 X1 m0 ^
]* u* u0 j! j; k4 D- D! {
let credibility-i-j-l 0- P2 a3 w. @/ Z5 H; ]  [: b9 \
;;i
评价(jjl的评价)0 Z& U3 d' {2 D: p0 D' Q0 c
let j 3. N3 M" Q  z, m3 s  N& m% g- V
let k 4
5 y% l) _" [9 ^" }while[j < trade-record-one-len]$ c" J1 d/ L9 N5 i9 O' b
[
, s: M' `: n9 J3 L3 Bwhile [((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
$ r& l0 {; G* c7 p% \set 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)
2 I0 V8 O7 C7 N/ wset j
3 K  R  I0 I* K: {4 d( j + 1)
$ ?$ {) @: H+ f" H* I( P# }3 H. I' q2 l
]
0 @4 m0 p  T) ?' Dset [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 ))
! y! Y7 m1 Z) b+ I, Y
3 s% K( S( b& y9 Z% ?4 \8 R  c

7 u9 F: ?- ]/ i* l4 h" glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 y9 C( v( {$ ?1 b5 g& Q% q
;;
及时更新il的评价质量的评价% k9 p# ^$ I4 q0 L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' a% Z7 {# K( A: S  Dset l (l + 1)! Y/ S) X, a5 W# f9 N  U0 {, t
]
; r. w6 E- u# \) mend
, i. t! I. ~1 F1 _2 J( i' r9 G+ W- S; f, I( r
to update-credibility-list9 H, U8 n. o) t) v, t( ^1 P
let i 08 b! f2 Y9 C6 J3 i
while[i < people]
7 X. K) P/ D0 ^4 Y& i$ R[$ |$ k0 w# n3 B5 v7 w) A
let j 0
& L. ^' J" A! u# @let note 0
" O8 G" R; C6 I! r6 x+ |/ i+ _let k 0
9 ?' j5 S9 m# H- N) a;;
计作出过评价的邻居节点的数目
: R# c' y4 B% n  Rwhile[j < people]
: ^1 r! a6 W, q/ s) T[
9 Z- ~+ z6 L" O1 j0 _! M& R# p" Uif (item j( [credibility] of turtle (i + 1)) != -1)
) S5 O" \) |% G;;
判断是否给本turtle的评价质量做出过评价的节点
7 l; g1 E/ |, u1 ?[set note (note + item j ([credibility]of turtle (i + 1)))" a; V' E  A$ @: B
;;*(exp (-(people - 2)))/(people - 2))]
4 D$ @# b; M1 a+ i4 ~
set k (k + 1)
' M5 y+ E9 H7 ^) n8 Y2 y]
* [/ j' w/ N4 z, v6 dset j (j + 1)" `6 z) f' @- R6 U
]" b5 C, i/ C% x; q1 Z! X
set note (note *(exp (- (1 / k)))/ k)7 L/ }$ }1 _) A1 I9 N" d
set credibility-list (replace-item i credibility-list note)
& ^8 J0 O. Y" C1 r' w3 M8 Rset i (i + 1)5 Y! c+ K6 ]% m. t* p9 {6 P
]9 c2 K- |3 i4 x8 z# ~
end
1 N3 {7 i, n; s8 l! a& X. }+ f9 L: A  x" r( w" ^7 N
to update-global-reputation-list# m3 G. {' S2 ~7 j: P3 c" H" g$ _
let j 0
' w* {) B& s; O- x5 Twhile[j < people]
3 b- P+ S& C& s2 X[' `; f( \3 `6 N" [1 }1 w
let new 0
  t9 y5 S9 k$ c3 ^5 J;;
暂存新的一个全局声誉
* D8 k" g: h7 u; @let i 0
4 D$ L: f9 m) l9 c9 o! H- M' Hlet sum-money 0
2 r- [4 S$ k9 d0 ilet credibility-money 0
# r8 c; D0 _  C% @/ c- [while [i < people]- |! ^  j9 C/ x# G
[+ W& f' `: U; \  u) G  f
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! ~1 J% C# ?: U: S7 J* ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% G& z8 T' I/ d; s* L" oset i (i + 1)4 v; h# |' f6 `0 k! s
]
4 r( A  U+ d1 _let k 0
2 w9 K/ H- b% n8 blet new1 0! ?2 j$ I" d& c1 d6 M' |
while [k < people]$ I0 `8 n/ d% q4 J5 V* N* X% }% s" f
[
9 c4 _! l; J0 W) Q% K) c, Nset 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)7 @7 d0 P& r$ U, F3 Q
set k (k + 1)
: n. Y' \4 c3 r! b; A3 K  u- u]7 f8 v, Z6 V& T4 v" M2 T) F
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 s+ ~8 s3 j$ M+ G
set global-reputation-list (replace-item j global-reputation-list new)
0 T. {$ W- t- h' t1 u2 _set j (j + 1)
" W( U  m. @; O1 r: N4 W]
! u3 f) B5 U  ~$ Q* [  Yend
- r% W; u9 ^0 M" `4 k
$ y9 ~# R. i  G  j/ y6 F" q8 u+ c3 m/ u: Q
2 D# X& G. Q2 m/ n# t& b6 g+ @. i
to get-color7 g( s# z. J9 B6 S+ x
/ P+ n! R1 c, s9 A. `% e
set color blue

" \; _. r- w& u' u5 f- e1 }+ `- |4 \$ {end
+ V. F: n. Q' ~; @. E/ |# t( f1 s+ m, D  r# k# L( C; _
to poll-class
( G7 R  Z5 y% @4 N; A- w5 ]4 |: mend
2 m' F7 @& o/ n" r
9 ?& ?2 \# G; N8 jto setup-plot1+ k1 P! v6 Q3 F1 M

$ H( b7 B3 J1 k( Z/ ~- }set-current-plot "Trends-of-Local-reputation"

: }& w* M' {! e( K; O; R/ K
3 x) `# e  W- N# Fset-plot-x-range 0 xmax
# c9 P. X0 h$ u& V% {
( i7 n0 O) Z  _) D
set-plot-y-range 0.0 ymax

9 y" h$ H* v+ Mend5 f+ g  ]2 j, x, S6 I
* y6 c' v7 ~* c, Q. s3 K
to setup-plot22 l0 W* {; W" r8 M* b& F

9 G3 ^% J  L6 W3 b+ V" Aset-current-plot "Trends-of-global-reputation"

& \9 \; c) L7 D, x7 Y
! \1 F! W' r3 D; p( i6 y2 }. jset-plot-x-range 0 xmax
0 ~# n. X8 \- ]$ K/ I
9 ?% Z# ~/ Q9 M8 _* ~1 L
set-plot-y-range 0.0 ymax

6 ^+ P1 d" w1 i0 X' z6 Wend
- O7 i4 J  c0 _( Y
3 V6 c4 f9 e9 p8 w3 Y7 }" vto setup-plot38 Q9 C9 ?" ?7 z6 t3 S: e( ]

9 P2 e2 a( \) L4 h! Uset-current-plot "Trends-of-credibility"
7 I2 A& X; @9 L$ v
, g( e, p; _' L9 y7 ~: n$ e8 j
set-plot-x-range 0 xmax

6 c1 s- U; U# `6 D$ F
% U/ h$ e$ N) D$ ^& ]5 G- @9 Gset-plot-y-range 0.0 ymax
1 H5 S* \6 C0 k$ s6 B3 e" Y
end) M! m. u& {" O& M3 j& x. v( u
1 n1 L, J" c: I: ~6 s' K
to do-plots! k$ _) ?2 j( Y% l/ J
set-current-plot "Trends-of-Local-reputation"
2 U5 W  Y7 R$ R/ O/ ^$ @set-current-plot-pen "Honest service"( o: r" g" u9 y& x' \
end6 m" g9 u& K- q5 M

/ W" ?' h" Y3 ?! ][ 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.
$ R" [1 e6 y9 Y/ Y# v' @6 e7 s8 [/ }
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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