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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:
  z) R  A( Z  ~& h% ito do-business
* ?  \4 g6 D. J. \2 U2 J rt random 360' j1 q) T* k$ n
fd 1; c, I9 L1 b5 c# {8 m. o
ifelse(other turtles-here != nobody)[2 x! r! }( c& r! U6 Y* k" {! v& c
   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.
; ~- R" K) a* X+ j. U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 {2 |9 T  Z! U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, A  L" |4 m6 x( G
   set [trade-record-one-len] of self length [trade-record-one] of self( r2 f% k5 d' \5 B
   set trade-record-current( list (timer) (random money-upper-limit))9 V/ v9 U" w2 z  G" q8 ]

! @1 }+ ^: X' u) W2 y4 G4 E# _问题的提示如下:9 a) y0 u0 e( L4 x% `- \! g

  S7 c3 s3 n3 s& c: [error while turtle 50 running OF in procedure DO-BUSINESS8 C# |% M* Y& u
  called by procedure GO
/ V4 d6 B3 ^% t: H8 LOF expected input to be a turtle agentset or turtle but got NOBODY instead.& p& M. y1 n1 d; L( C% W5 P
(halted running of go)# [- f0 B; n: l. L4 Z% s

4 e) A9 N$ H2 {% |: I6 B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~~
% F, E' Z" w' a0 {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# d) t  J. R; c
globals[
3 ?9 _7 {( s3 Gxmax
; S  s- b' B% F# A3 H( }ymax1 |3 T6 x' _4 S
global-reputation-list
# f7 {3 x" p: P1 Y' o# c
" K" ^% Q. Z9 ^7 D  F# Q* j;;
每一个turtle的全局声誉都存在此LIST4 u" u" H( o5 v  V; n3 p6 }% e! `
credibility-list
! w+ F  j9 V+ a3 t6 };;
每一个turtle的评价可信度
3 \# F/ K; a: |' p6 W1 j5 }honest-service
7 t  {7 _4 y: H& b) ^9 Funhonest-service4 [1 a( i2 O. c3 @% |6 \
oscillation$ B  s2 Z6 F) h8 X6 G: O
rand-dynamic& y3 z# ?0 C8 T
]3 S7 A, Y0 |$ w- c: s9 _5 ^& ^

2 }# P' U5 t7 M1 n/ ?9 oturtles-own[) l( n8 S9 ^1 ^& U0 O5 P/ m4 v
trade-record-all
# m% \+ t9 l3 F. R2 l" i+ j;;a list of lists,
trade-record-one组成
; b. u1 d: |% l7 Atrade-record-one
7 l" S8 w" l; u  L! a6 v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 p8 C0 ?  w4 i) s# q

* {4 l. D! X: G& W; F# W;;[
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]]
( [1 _" V. h  w) Ntrade-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]0 W% P% `0 x/ ^. _/ S
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% P6 y8 u9 D' @/ A" u' x
neighbor-total
7 O. u0 T6 H1 t! i) R;;
记录该turtle的邻居节点的数目
0 j' M, m, `. o; K& Strade-time( q$ F$ H: q& t7 u( ]; Y1 e
;;
当前发生交易的turtle的交易时间/ V" ~5 J9 |2 ^- E7 ]
appraise-give
7 I+ [$ y7 W: Y( I;;
当前发生交易时给出的评价. g# {6 F5 p) i* S: C* R! |
appraise-receive$ ]8 U3 ~4 s) }' C1 l  V
;;
当前发生交易时收到的评价; f% o% _7 T9 ?0 t3 v9 M& {% j) b
appraise-time
* [# i) L* y% E0 `3 V3 X;;
当前发生交易时的评价时间$ K$ m3 A$ X) N4 `
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 V2 C' Z% V. ~4 j
trade-times-total
9 A, [5 F1 h* c, }& V;;
与当前turtle的交易总次数) X7 T# B& o4 S$ w
trade-money-total5 A% x# U" D6 p8 @( ?9 U
;;
与当前turtle的交易总金额
9 c/ Q% O# W: s9 o, v7 D0 {/ E, d7 nlocal-reputation
7 z/ T$ e5 u. I, Hglobal-reputation
" G" N% i* k5 x+ p2 B! z  vcredibility- e4 e' y5 v, M" V6 z$ z5 o+ v
;;
评价可信度,每次交易后都需要更新: C, \1 `, B" O! P
credibility-all
$ W" g4 }. u# v: d$ ^# J;;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
2 M7 {  x3 a  o& K6 b
) n/ a3 s$ T2 ^0 ^;;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+ T. p  @6 T; {2 p9 }
credibility-one! D5 Y. b$ i& r$ q5 p3 ]: o# h
;;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: A& N2 `2 h- W% w% g/ {
global-proportion
7 g  k$ _1 N+ `customer( v! U6 I) y( P& b+ n/ X- H
customer-no
9 l" \" N# e( ^- W7 {: rtrust-ok3 g! G7 i2 U  R3 L( j
trade-record-one-len;;trade-record-one的长度
* W) ?8 k' o& l; G+ ~7 F]0 p0 U& E' ~( i' |0 v! Y7 |

8 z  P7 d5 P  g5 A9 j9 R; Q& H1 \;;setup procedure
9 w/ p& f& i: m& H, Z: g/ U3 I' V- p
to setup& L) t# U! h1 d+ u4 j0 N5 s" C0 @

" |5 I4 r# Q! M. f% }% l# a; Bca

- W' L8 k/ o. K$ i" _
0 V2 u5 U: a3 p7 Q% ^) M8 [( y! ~initialize-settings
8 a  }) [' ~+ D. w9 M, }1 v/ y
. I. t9 ^% G; |
crt people [setup-turtles]
2 D+ Y4 H! }) ]* X$ x( a

  o! b3 T  t5 s# A) {reset-timer
/ l# M) n' W3 _- X6 t

6 @3 V0 ~& p' G9 T  @* spoll-class

7 Z2 _1 H, ?  t' p+ _- t3 I7 p. {% g3 d" d
setup-plots
( J- w: q( w" O% e" Y! ]0 ?

) K, m* y/ D% H% R, z6 S, G( W) Fdo-plots

5 P9 V3 ^1 M4 ~0 }* }7 Q$ }- ?end) z8 b: |' ^% W7 w
) C) Y& K7 `% @$ f1 x. }# P
to initialize-settings, v( S9 [3 F0 Y! p; K" x

/ V+ j6 ]  H, w$ rset global-reputation-list []
* @$ Z7 P9 G) x0 Y. o# X
: `  R3 X. _0 j3 W$ r& W6 {) l
set credibility-list n-values people [0.5]

" g: I# O3 [+ g$ d+ G; u2 @1 U5 Z# f1 z" c+ z
set honest-service 0
$ _6 X2 `3 n+ q& ?+ V! i9 {
# H. j& ]0 g3 {
set unhonest-service 0
" B6 Y$ t8 s, S
4 l$ W+ m8 k2 K$ A! j: o
set oscillation 0
+ H6 p+ _# x. G7 [6 [

) w$ d0 p- e9 c  K* ]) t0 p5 Bset rand-dynamic 0

. L# G- w  N  y4 A, L* O! M- Qend9 e( i3 ^3 [* v3 j! y1 _2 v5 e' R

# y' g- K1 @+ V, N. M& i1 \+ ^to setup-turtles
# A: b8 w/ H$ ?# Z6 P% z$ c- Sset shape "person"
0 t/ `) i; J& W1 `4 a$ Fsetxy random-xcor random-ycor
: [# p+ v8 a4 N# j, gset trade-record-one []
- `$ q: C; c& @6 i4 G0 c5 ~  i

$ g) n( I' E+ J; f5 b0 ~2 l" K6 nset trade-record-all n-values people [(list (? + 1) 0 0)]
  R+ U/ D8 a9 m8 ?
2 n% D$ v& R8 c( L$ k& Z6 S6 `
set trade-record-current []
: T2 o! u9 _( B) aset credibility-receive []
& y6 z5 f) t2 d; P( lset local-reputation 0.51 V. j" P  a# C# C# b6 q
set neighbor-total 0
7 s0 i5 d: {$ A- Q. Dset trade-times-total 03 M# H# o4 d6 T& o
set trade-money-total 0
+ N$ E1 Y9 c  E9 nset customer nobody
. H, `  l* k$ |7 t* _- f7 y8 v" dset credibility-all n-values people [creat-credibility]+ B6 f' c. S. Q7 s3 `
set credibility n-values people [-1]
, r/ i6 b( T$ J) o8 A# h$ N9 }% nget-color
* ]2 f% ?  w/ {! n, a. J7 [6 Q1 y
0 l9 B$ b7 R# |: {; T0 m- ]
end9 X- W  U6 ]5 V' l" o' O$ i
  Y7 ?$ |# p0 r$ F$ Y; G0 W' y
to-report creat-credibility+ s( F( [* _/ L3 }& N& [
report n-values people [0.5]3 D) r# q  I! I
end+ L( Y$ \$ n5 w

7 R1 u1 V: a- `+ c4 Hto setup-plots
5 W6 V& ^& i5 t8 k
+ [) i4 G/ B! X) N2 H* `( X; {, Aset xmax 30
0 o/ ~3 z9 Q1 q6 Z
8 B0 k  L5 t) `6 q% w% m
set ymax 1.0

- v* }8 U0 Y1 r# W' q
. Z- H; `& u. C- K5 Aclear-all-plots
8 D% p+ S. a+ L& S9 ]3 w

" \/ ~9 E0 ~1 {' g# H/ zsetup-plot1
# P5 u! o9 s/ Y

! S2 [. U: U$ psetup-plot2

& s- t5 L( P, l  V- D  E. d/ u: ?0 t7 m
5 s2 |: r+ [8 V) z5 qsetup-plot3
6 t' H2 o2 n5 B9 J( o5 n6 a
end
( c  R  u/ {$ J& k
$ ~" e! W( }# K( U7 X;;run time procedures
1 q+ ~1 h7 t6 p2 F1 [+ N
: o  o6 o; V; G# C! `) i" qto go& g) Y) }7 S$ c% @* g5 Q/ f
  {5 C2 D  X" C. z  m4 r# [
ask turtles [do-business]

& U* ?- k; t% f; dend
; k3 p( r) ~$ f, M5 p
# D( [* f! v3 \: F* E. V6 Ato do-business 3 r" p/ R" u% o, F) s4 o

  E6 {1 Z- f2 A4 H0 ~2 \
- n# C9 o; b) e6 W& ]% A# [rt random 360
( d2 G" z) c& ?, z% p8 D" R0 X

, b. ?% v) M! A4 Y' sfd 1
* d! o- D2 {8 |# c1 s
2 J, S1 Q( o5 A% S2 ~" }4 b. l
ifelse(other turtles-here != nobody)[

+ ~4 X. V4 Z2 u* Y" q! O5 T4 H, h) \( O4 O
set customer one-of other turtles-here

, a, v0 G( j% G% S
) S" t6 E) j) R/ c7 h;; set [customer] of customer myself

2 A$ Y. J2 [5 F& a, S% ]% F9 U9 {9 f% J" {$ u5 ~# }9 H* j, G
set [trade-record-one] of self item (([who] of customer) - 1)
6 ^) \8 ?( l% N' o% x6 V[trade-record-all]of self
7 e5 y" X/ z' \0 x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 J7 n& \! K" l2 U  N1 X9 u2 C
" ^1 c5 O/ {8 ]: l, \6 r
set [trade-record-one] of customer item (([who] of self) - 1)  e! \7 p2 H9 }, l0 I7 ]
[trade-record-all]of customer

5 i) L. s6 D/ a# i+ K3 @0 ]& j
set [trade-record-one-len] of self length [trade-record-one] of self

6 N. u  G* H2 Z4 V+ C' ?3 d
+ V+ g/ |; P/ lset trade-record-current( list (timer) (random money-upper-limit))
/ \4 G  _7 s( B: @$ _

; D+ c, R' S0 l1 fask self [do-trust]  F7 G2 U+ {; C. A9 h# M' A
;;
先求ij的信任度
0 I$ V  `$ j2 f& J  z9 p+ M' ]  }7 K6 w( g) ]. c
if ([trust-ok] of self)
; f2 O" x% o/ m4 Q;;
根据ij的信任度来决定是否与j进行交易[7 `5 K0 O* H; }- v4 d! W/ e* J/ j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ U1 S9 I- ^* y  h. s2 K8 m2 O% q  ^" U; {; E# ^' ?1 `. Y
[

9 X( }4 W: D/ Z) h; ~
: e" |' I+ ^# |# e5 |/ d9 n5 sdo-trade
+ S7 L# \* z" S0 D0 m, ~+ H

. ]$ \5 M: R% q- m" aupdate-credibility-ijl

9 x% Z' [9 X% R- I2 u8 O) O9 i5 w: }8 y
update-credibility-list
, u. p7 ~1 D8 j! q( Q7 q; y+ }* `

7 \3 V. {/ k1 E5 H* c% D5 x4 h5 V* ~$ l9 |( p# n0 n" x" \
update-global-reputation-list

# {/ X5 ?. l( y# V7 V0 h
% G9 C7 b# v" W+ Spoll-class
) o, _. {. x% i; n1 J
5 r5 l1 L- k# T& q6 D' C$ Y3 z  ~1 @
get-color

! t1 P9 W8 t: c* s4 w! N
+ b) m" G( {" R$ y9 m]]( N' w( I+ O! m) X1 ~
+ J: r: m" z( w/ Z6 `
;;
如果所得的信任度满足条件,则进行交易" l4 R" V8 W2 N  {# `8 k
1 @$ h" E- t' f. k- l0 D4 G& q$ {
[

: F; K0 j- k. [7 B1 I
  j7 N$ t- J9 _2 I: A: Q/ `: Xrt random 360
6 O( M' [5 q( i- ^" T
1 b* I; }/ ~2 k$ z' ]' V/ o
fd 1
2 w; m: a+ D+ A! a& o# I
0 c( D* _0 y7 ^% p% F
]
' W/ X' S( p) j
3 V5 `8 t6 d( A0 M4 h
end
# I8 v, o6 Y- a  X7 }
8 Y  Y, E' M( Q
to do-trust ! [* p! G% m0 t8 }: T
set trust-ok False
5 _7 i& w5 H1 B( J/ U) v( p" R9 [7 v+ Z: S9 k6 h

: C' F1 _+ F0 W& j1 R8 w; |let max-trade-times 04 L' ?' X0 l9 e4 A0 W( I4 B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) U) ]+ @# \( w( n
let max-trade-money 0
! e& U2 N) j0 T! E" k" D' ?( O0 X5 ]' Cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 y7 h* c3 w8 G0 p! p, h$ @0 h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 ^3 T. m7 U/ J# j4 \
2 s" v3 ]3 M: F* g

8 N+ e+ s) ^5 Q2 _- O9 Nget-global-proportion$ Q0 _: U4 o6 d& s% y" S/ |
let trust-value. {3 [7 ^, V% l( N) r! a) Q* C
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)
) l7 E$ g; ~& y/ B& S
if(trust-value > trade-trust-value)5 H: X1 K% ^( k$ H
[set trust-ok true]
7 C( i( d( ]' _  E: Z7 |) d! B. z$ ?end4 S, [# @' L8 j( O+ u( T# `; y% L0 n
( x( J) m9 w& T7 [% E8 s
to get-global-proportion: W$ @6 R0 R% m5 r7 u: j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), L' u9 h- x4 B; c/ S+ p, u# a
[set global-proportion 0]/ S% C1 \$ t0 i! r5 t, r
[let i 0. S6 b( `2 L9 |" U# w5 V
let sum-money 06 N. p8 v+ x7 V/ k3 {( X) {
while[ i < people]
* |! g4 @4 e8 W" n: I9 u& w9 A[
8 @# m* {$ V9 c  u2 I5 q& X: U' Lif( length (item i
: o/ Q" ?) O* j0 C( E[trade-record-all] of customer) > 3 )
4 A' c5 l! _3 k+ ]% Q9 y; o+ x
[
. u5 v/ I/ U* T) L$ x8 s9 @$ J& xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ V% m% `& F# r; @, `
]. J; A2 }3 v. F% L
]
/ ]! V) ]6 }- W9 F- S  Alet j 0
: X3 [( k* \; |: ?6 ?! glet note 05 `' |- }' t7 P. ]2 g- X
while[ j < people]
# i- `( x( G$ a9 Y+ c+ U1 ^8 r! W[' k) @( p9 x- z, b( Y
if( length (item i. `& ]4 g' ]/ y- M2 o- _9 u
[trade-record-all] of customer) > 3 )
: k  ]  D" r: k+ o
[- t6 m8 G* }# c. K% |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 T/ B; g) l& ?5 ~7 Z+ C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 B* m4 Z0 O" r, U, s* a) D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: F1 }1 b) L) c4 t  y' L  {$ R]
7 ^  ]9 u7 H7 B8 c: ^]
; d+ l0 f" X, l, J# b6 E+ j) tset global-proportion note
. k/ @& Y) F" t7 t]4 n0 M, P: h" U, B, D
end* G( g7 |: v3 N, ?$ Q. y. T0 G
& C& ]0 ?, T  Y
to do-trade& F, P; Q' K1 f
;;
这个过程实际上是给双方作出评价的过程! O7 d% i9 o& l; [6 T, Y/ W, _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% z* Q1 e$ w/ e8 Y' F: U2 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ j( T- ^6 k# Y. ~& k- `  l" R9 Mset trade-record-current lput(timer) trade-record-current
1 O- `! ?% v5 q;;
评价时间
; J/ N& O, z. ]# F, gask myself [$ m/ n9 \: M( m- u! @) S
update-local-reputation  g# @+ R& c7 q7 n1 w0 n; @
set trade-record-current lput([local-reputation] of myself) trade-record-current
6 c; L" L% ]* n: z5 g2 d]
- [/ ?1 t1 c2 v# y7 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 C& v# u  C: r! p;;
将此次交易的记录加入到trade-record-one) p7 S+ x9 A+ `# C3 Q; Q& Y( h( b) g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 {' L6 ~0 x5 b. S$ d8 }$ |let note (item 2 trade-record-current )
  j; [* j0 M, c; ~: v3 Sset trade-record-current' n& N0 R+ ^& D. m8 ~  K
(replace-item 2 trade-record-current (item 3 trade-record-current))
  U- h! O4 Y9 Y" @# O" k# \- S
set trade-record-current
; M0 H. `7 h7 H; q* |, a(replace-item 3 trade-record-current note)
1 @& U# l; n( H% A- k2 V" A6 [$ W# p1 I0 R

* s5 Q3 W" G4 Mask customer [- P0 y. q: O6 J# S
update-local-reputation: S# g: C5 A. |+ N6 W- f. j3 e
set trade-record-current8 K9 E% Q3 o# y2 B8 t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# |7 r' R* t& W, d/ J
]
1 {; z% K4 r* f# Y9 B" K8 Y# b; X) L
0 X  ]; O4 t/ D4 N( {. u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 s! ?0 b7 D' I$ t. c3 a

; [+ f0 u4 O# Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ |8 q" V" A. j, O- V, Y7 c* f* P3 X;;
将此次交易的记录加入到customertrade-record-all
# e- M3 G" h, f/ H* ~end" P" Y6 _( v8 m7 C, ~: C' B$ [5 I& t
( w. K+ T9 J7 u8 t
to update-local-reputation% @2 N& V% X& i3 Z
set [trade-record-one-len] of myself length [trade-record-one] of myself
1 T' n% N9 E  H* ?5 D, Y
' e% `/ P6 A1 R' h6 ^! S# I  H
8 L# x4 c' |- X, M+ s6 O;;if [trade-record-one-len] of myself > 3
6 z# v# K: k% ?9 ?
update-neighbor-total
* f* q: t9 G) j. B% {;;
更新邻居节点的数目,在此进行) m( t& \7 r# J. N$ F0 T& ]
let i 3) o* `# f! O  \+ l2 T
let sum-time 06 c2 i$ V6 n# c3 G
while[i < [trade-record-one-len] of myself]
2 L8 n, s; v) E6 U" Q[3 T% ?/ ~  o* J. y+ n( O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 E; @: }. G) w- F/ xset i6 \  L( y  D$ h) N- @5 u
( i + 1)
" Y9 Z6 G- |8 O3 }) m) ~# J
]
3 A5 V- ~" E% Q0 X8 [let j 3
0 D1 L( N* B: B8 N' l% @9 e% O" v3 glet sum-money 0/ k0 L; p2 b" f- a6 S: @" ]7 U0 n
while[j < [trade-record-one-len] of myself]6 }( {! h& S* V" m2 T
[
9 O+ q( e3 g' r8 X0 Y& R- e3 y  Aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
5 ]- Y( H  N- R- Fset j- W8 P/ {- H( D  n, Z( ?7 C
( j + 1)

4 [7 S- d" W+ {]8 ~9 n! u  |' R2 H
let k 30 Z& |; u/ [) O; Q
let power 0
! P* l4 e  U, `let local 0
# i3 O. J" s1 l0 P% ]( iwhile [k <[trade-record-one-len] of myself]' U; d: @- V# u: F9 p; A( T1 _
[$ B% Q' U5 \5 B# N! E
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) ) v; G, p- m+ K% h+ I% N, y5 i
set k (k + 1)3 j  E( ]3 \* {7 e! h  b; e
]3 `" N& {& U- W/ s6 s% A  ?
set [local-reputation] of myself (local)) j9 M- c' t$ z; n5 n4 P, C1 x
end1 k" T. y# H5 l( Q

+ ]' s9 P) \: Zto update-neighbor-total) r$ o, p0 g' ^1 I+ F& ~

0 x4 C0 L3 `% p4 zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: t/ W0 H' q+ Q7 v5 [

7 O1 _; r, x: r% S

7 v6 x) K) ~5 K0 a/ X& s% r3 pend
0 k( G. ]! h% A5 Z0 ^- M( T+ ~( l2 ?3 A+ H/ G% f0 T+ ?# g2 h; L* a
to update-credibility-ijl 8 D7 W' S+ T" S+ P2 V. Z/ J  w

1 O  I$ j" b6 R8 f) n6 d% j  h;;
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。& `! `3 \, p$ T' k
let l 0- N/ ^' P; K& |, X! F( c
while[ l < people ]# [- m9 X3 k: |+ o1 p( u
;;
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
, b' f3 K& @# }. c% \[1 w7 z( u9 o( N" r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' E) `2 d- i2 y1 z
if (trade-record-one-j-l-len > 3)) W- R; B; N' @% M* k3 @
[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-one9 p& B3 R1 f: }& X' c! G
let i 32 ^+ N; z, a7 D1 `7 Q- i9 L
let sum-time 0  B) \) X9 g7 L+ O8 `8 r' ]% L% K
while[i < trade-record-one-len]: Y$ G- [# A2 w% y
[
4 u% @5 U( e+ Q. U; hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 b2 y1 x( r+ e! `7 M  T# D, |7 F; K
set i
) J6 _7 ^8 R/ b) n) ~) w( i + 1)
' M/ a; m- R; u; L
]
; j! @3 X. f  D* ^6 Elet credibility-i-j-l 0
6 T5 c$ r2 D: }. R;;i
评价(jjl的评价)/ W- W$ G/ \/ G* a0 M0 |
let j 3! X+ @) S- A% o' e" C" D( f1 e
let k 40 L6 ?( U+ Y* N  ^& `; U/ b
while[j < trade-record-one-len]
' h' _* A# K) t, P[
# k3 q" K+ \7 d3 F* L/ U: 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" X8 p8 @, g8 D! F; G2 b
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)/ {- P/ M) \* h4 P
set j
; O& y8 t/ o1 [( j + 1)

3 |5 L) O& `: P" j; ^/ M]
9 i/ L( b2 p) w) jset [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 ))
1 j+ Y% H0 r  W) d
# r3 `9 H) Q1 b5 @* R" }+ O
! ]: H" ~. }, f: C2 g3 J8 w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( h( V+ `/ E. D* N) s3 b4 R. f
;;
及时更新il的评价质量的评价
% F/ K% {7 _) T/ {2 G6 Qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( x* ~/ J5 I& c' r
set l (l + 1)
( g& H- R! }8 J0 F# D+ I$ o4 w" s# L]5 G; J# [' t/ o( h% C
end3 P) c. P) _8 r. h
" o5 Q: L$ x6 C% x' {
to update-credibility-list/ D/ Y7 E/ w$ {# \  s$ D
let i 05 _. z. T' Q, p- y7 y
while[i < people]% v- @- i( q: P
[) l. q) s; F! X) R: U! z: b
let j 0
, M& P. U4 W4 A$ o# {. A% slet note 0
; w! |# g! {7 A, Hlet k 0
# E, a( Q# @( h( C;;
计作出过评价的邻居节点的数目( i6 p) H. K3 Y5 a6 S
while[j < people]9 Y# S9 D- v. ~/ U( U2 C. x, v: |5 o
[
- z5 R4 m9 A2 Z0 e& u4 G3 l- I- vif (item j( [credibility] of turtle (i + 1)) != -1)1 m3 ^% e# l0 Y
;;
判断是否给本turtle的评价质量做出过评价的节点
) ?, I" T/ @. `0 R# D( Z* B[set note (note + item j ([credibility]of turtle (i + 1)))
6 U+ \8 i6 I/ D# D2 \& t;;*(exp (-(people - 2)))/(people - 2))]
7 W$ o. U/ A0 P0 i/ q6 ~& U
set k (k + 1)
# l0 G2 C8 ?  o  J- H3 t]
3 D1 d% H( w8 Pset j (j + 1)! l; |  q/ @3 x, h( ^* Z+ Y; C
]% s8 t! f; u2 H5 @3 W4 [0 R
set note (note *(exp (- (1 / k)))/ k)9 b3 z* n- P3 P7 g
set credibility-list (replace-item i credibility-list note)7 B4 a: g# P" C. Z' ^& t
set i (i + 1)4 Q7 y( G+ W4 X5 C
]# d4 K8 Z! {$ v! m& w
end
8 c. N1 @8 ^* U; ^- H8 s$ e. w- x% P" j: S6 z3 a3 x
to update-global-reputation-list2 X8 [/ ?. d+ d- |
let j 0
" W0 U5 Z2 |5 R  T* Iwhile[j < people]
/ \; e$ o, Z1 p+ H" x. S[
6 E/ t: S$ u8 s) a# t5 w3 Y( c: dlet new 0
' `" W9 B+ ?5 ?( S; X;;
暂存新的一个全局声誉: y) l3 L+ D1 K: h& k
let i 04 V/ `: ~6 E- x! l
let sum-money 0
$ I% u; s7 i$ a# m+ M" I4 Nlet credibility-money 0: B# R4 Y4 v% A) d7 p
while [i < people]8 a% T; V5 F: d3 G! H# W
[
8 E6 Q9 g+ x, n  I4 @2 wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: W1 |0 ]  z7 Q0 C; Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- T/ i. j8 d& D/ w9 O+ Bset i (i + 1)1 y0 u. N: C( w3 P/ V% E
]
' K3 Y8 F! y1 v" R8 mlet k 03 Y$ I% P; y" m1 w* u& Q$ `( D
let new1 05 u) v3 ~: P# r+ \
while [k < people]5 W# s( ]; q( Y6 o
[
/ u1 s/ r" J$ F; t! `) Eset 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)8 M4 ^- z3 U7 R/ F
set k (k + 1)
( T$ W/ f% ?/ g( _8 P) u+ U]
: H  @5 s0 {  a. D2 D# y' \9 jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * Q" }6 `& B# z  }2 ^$ e& p
set global-reputation-list (replace-item j global-reputation-list new)
& k1 S. X- M8 V- c0 l! ~0 uset j (j + 1)
- R; n8 x) W1 K]
% g( d" G  C6 G- }5 k* pend
& W) O6 ?4 [# S; w3 \; C4 R0 i9 y2 I' _1 V

2 P0 H; w6 E4 {& U% f4 G5 ~
# U7 k  H+ k! E3 `  Q' r4 Oto get-color
/ t  D- U* D# N4 e& {
7 a0 ]" O( `2 \* J6 b5 V. G$ B: gset color blue
2 g& |$ ?4 ~- l
end- x* j# [: b/ G7 W& h& Q

7 W5 Z0 X! W9 z/ c0 wto poll-class1 X  x; a& C4 y3 F
end" M* h4 u! U0 v9 i4 O2 p

1 j$ Z! |6 p! B: X' [* {to setup-plot11 M/ f/ X" E. E+ T( E/ @2 u% [2 K
4 c9 U7 E2 @) {1 G6 u
set-current-plot "Trends-of-Local-reputation"

: P$ x: i+ d3 w: h& t+ ]" }- _  U  b% g
set-plot-x-range 0 xmax
# e* r5 _- m- f1 l/ d9 l& y

$ C% @, y/ q& F) U3 Qset-plot-y-range 0.0 ymax

! s: \+ S' {8 \1 G/ a0 X- h* iend/ _) o$ t/ }5 {+ F

3 U" J: c% w' i+ kto setup-plot2. \' @% i. H4 K/ x/ L) Y
2 n5 I8 ~% V9 w( C
set-current-plot "Trends-of-global-reputation"

" j5 Y8 G+ U1 ]
/ L% _8 H3 ^* E9 w6 V7 Tset-plot-x-range 0 xmax

8 p3 n& a) A% e. G+ m" ^4 I( k- H0 b3 `3 o
set-plot-y-range 0.0 ymax
3 R: a% H2 H' P1 G3 G( g4 R2 q/ ]7 I- F
end
  [6 X4 u  ~+ o1 C
7 T4 W, Y& @$ v; cto setup-plot3* }9 w* k( S" e2 y1 A7 }
8 ~6 K; |) r0 N* c6 G/ f5 h
set-current-plot "Trends-of-credibility"

- O& T3 s" A0 o
9 ?: J# F+ |5 P7 e' ^set-plot-x-range 0 xmax

# e9 b, @2 |' Y+ g7 k7 u
* O9 b0 J- ~  k* oset-plot-y-range 0.0 ymax

) j% w  D6 o2 _end
& m; _3 ?6 ^% Q
6 g/ }# M: S8 W8 X, h- w0 M- d$ N! Qto do-plots& c5 ]5 P# U6 A! z" E4 }& Q
set-current-plot "Trends-of-Local-reputation"
0 u6 d% B' f. P0 [& p' A* ^6 gset-current-plot-pen "Honest service"
" d  ]" k% p3 L/ @* M  \4 R" h" e- |end/ `7 u1 ]+ p; d0 {

5 @- g; e- Q- d# l6 o[ 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.
9 K9 p, t3 n2 S  _! |7 i: Y8 \- h# e# |' `9 n9 X5 N& F& N
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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