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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:* D" M$ e% E' M0 e! b2 w& v: P
to do-business
5 o7 _" ?4 a3 c+ Q0 d/ G& k rt random 360
" ], i" X+ y0 v/ w0 V+ r+ l$ E/ f fd 11 a! T, E  }2 o8 w
ifelse(other turtles-here != nobody)[
) U6 j/ `/ h) K* 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.7 |7 W2 F5 q  Z! w9 R; L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 |' ?  c1 f; s4 {* c  ]2 S' |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) i+ m# N4 H) d* ]1 J7 d3 o
   set [trade-record-one-len] of self length [trade-record-one] of self1 Y" z: Z- A9 ?( w' ~0 A* r
   set trade-record-current( list (timer) (random money-upper-limit))' f% |2 A; Y& _
, D' p7 L( a  K+ I5 x
问题的提示如下:
  U7 E# c% C% ]" p$ H2 E- t% Z; Q$ z' j5 L/ |, W
error while turtle 50 running OF in procedure DO-BUSINESS; j% h% i/ j. O3 h7 X9 \  n
  called by procedure GO
, w. I1 {5 x) S$ h; s7 U/ tOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 P# L9 b: j, V* \1 L, t6 c! Y; z; h
(halted running of go)" g7 P) Z3 R! U0 a4 l8 F$ ]
5 Q3 r9 G7 _0 m; a  s* t
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~~8 g& Q  `9 b/ Y
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8 j, r, [# l' U" V5 |
globals[3 u" D4 P' m* M# a# E# c! ^5 R. k
xmax
5 I. I! v2 d2 t2 `" xymax
  r0 @5 }0 C3 p( r6 {% oglobal-reputation-list4 d1 j$ H! I; {- W; Y  _/ m
; U6 n, c; v+ ~7 u/ X! E0 G
;;
每一个turtle的全局声誉都存在此LIST: U8 }" {& @+ h5 X1 P
credibility-list
: e7 }9 h" d2 ^;;
每一个turtle的评价可信度. u* t( i! u1 |" M
honest-service
7 V9 t9 `+ G6 sunhonest-service/ J0 E/ N# Y* N* O4 R* A  i
oscillation
2 r% D8 h$ c! x7 j$ b  ^rand-dynamic
4 ~# i8 N) h. x, q]
+ ?" u" V3 e$ C# T: `* o9 P( L" _
turtles-own[
/ E  [& p2 k8 w" Y# e+ jtrade-record-all
$ V4 O# f- X# I4 K4 J;;a list of lists,
trade-record-one组成! I% ^( O& Q" }7 U
trade-record-one
# o! }3 F" n( Z, V' u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- Q. _8 E' {! d9 ~+ I* w$ i' ], S
;;[
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]]! s" E! X# Z7 i
trade-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]. v) P/ _, I# V4 E
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list4 c* w: N6 B8 i# d' ^% M
neighbor-total
6 v. X  K0 _$ @# [8 r5 u;;
记录该turtle的邻居节点的数目" Y/ `$ Z1 X3 ?' J4 A$ i
trade-time' N$ e& p0 T0 X2 }7 s
;;
当前发生交易的turtle的交易时间: u0 X8 g, C2 r9 `* ?
appraise-give
4 W( r- {9 T7 c; y  U# G8 \5 G;;
当前发生交易时给出的评价
# [. [" V7 T5 F; g' L$ x/ ?appraise-receive" J9 c0 U) l9 g
;;
当前发生交易时收到的评价: q6 o' X" C( h) I! Z
appraise-time6 s& j: S& \* {( l) \" v0 d
;;
当前发生交易时的评价时间
/ U  _# L2 ?" k1 e1 i2 Jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 B: M% I# P" V' @; i! ]trade-times-total
) |/ [* T3 r. N4 z& Z;;
与当前turtle的交易总次数: {" _9 M( b0 X! T
trade-money-total
' F- k! R) |9 O- J;;
与当前turtle的交易总金额( K8 g5 l! O3 B1 t5 R3 A$ n
local-reputation  n, a  i! {; b$ T
global-reputation+ H9 v  y/ `" P; E
credibility
( J" Q. G9 F3 o  e& y) J1 m9 V;;
评价可信度,每次交易后都需要更新
( t  X3 c: K; r; X+ M7 r! Mcredibility-all
5 r' q( x; I" Y7 d& O;;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) O( g9 p7 c1 b$ M$ n6 N
* l. w8 H; ~3 X' N( E: j6 m2 y
;;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
/ a8 D$ J" G/ c8 [9 `7 Y1 qcredibility-one
7 d+ d6 Z( a! C; D;;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+ m4 |$ B. A, ?& D' i# k6 ^" G
global-proportion& F+ l( c1 Y1 C# g7 e# b
customer
* T: d3 R# ], e2 O' Xcustomer-no; X/ @2 ]" Q- c5 |3 F
trust-ok: [9 m5 H' r! b% P) g/ k
trade-record-one-len;;trade-record-one的长度' ]- Y; a. q- |
]
9 ]3 i1 A/ ]- I. x+ ?) \: k- F& D- t$ g. F& q
;;setup procedure
+ ?3 s* x5 J! o$ L% C( a* l& w* w
to setup- ^' ^- S/ ?: b# z- l" c; z) |
3 a' w  Y1 e1 r* w- \$ y
ca

! X6 @2 P' k$ |( e6 ?
, i$ E" \# Q; n6 ?5 q$ H8 qinitialize-settings

6 U" x5 T( @6 C- T/ V4 c, D& R
7 r0 f7 i& {+ \: Z0 o# b* j2 Wcrt people [setup-turtles]
4 a0 H) i) L  P; G, S" m* M
+ E1 q3 |$ {- o/ @& g  h8 L- y
reset-timer

- l# c  ]1 l1 z# l" I+ P3 q
5 e- Z" n9 H6 u8 x# O& ppoll-class

7 ]; c- o/ @$ @' L3 k: H8 e  I, z" p7 c  K
setup-plots

# a# u6 B8 I. k& V2 A6 \; k4 T4 @+ N
) ?6 X2 l( ?2 W3 O% Y* c0 Fdo-plots
+ D; T$ o6 e* Q+ h7 \( U
end
& v& r* I* h- P
3 W! Y  h6 F3 s/ z4 u, `5 d7 lto initialize-settings( E4 _! z& b/ \/ L0 \/ C, f

" w" g0 k' T6 L, I  dset global-reputation-list []

# ?; a+ U# B5 @# Y% g0 h, u& E. {
set credibility-list n-values people [0.5]

% d: B% C! C  u( ?/ V$ f+ |+ j. ^4 m
set honest-service 0
! K, J: K8 i1 A3 {" r

) J  h% W9 _/ u9 b) U9 \& x, [set unhonest-service 0
- }  F: |0 i/ s$ I6 _
) p0 [% `; R6 V4 T( _. G9 p
set oscillation 0
" y- v( X# V& l! c/ D/ h" q
  m( `& ?) T* T* O& b2 I$ J
set rand-dynamic 0
% p2 X& `& C% k3 {
end
+ d1 ]+ ~7 z) l  i0 _9 L
1 e9 N/ D; Z, Gto setup-turtles
0 ^& r. z1 c+ }+ s) Gset shape "person"
' c6 k. Y) Q7 S2 D) ^% T5 U% s( Dsetxy random-xcor random-ycor
  V( E6 B& T- E6 E0 Z7 y; e9 Cset trade-record-one []: P; [8 J0 }, s6 j4 Q

# E* T" e; r, m/ s& [, M. Cset trade-record-all n-values people [(list (? + 1) 0 0)]
3 |3 D9 W% d" n5 K# _1 I* O' I4 Q* @
* l* z6 f4 |' b8 V% y
set trade-record-current []
8 p* c+ a  D  k5 d$ J* ^# o/ u& ^set credibility-receive []) j' x" E3 u" M1 b
set local-reputation 0.58 h2 \) i% ~; w& U5 `: U  B
set neighbor-total 0& K, _7 N2 m+ P& |
set trade-times-total 0
* z" v$ \% k. Wset trade-money-total 0
) F* U9 m7 y# w% ^: ]9 m0 Fset customer nobody5 l  W, E3 \; l/ ~: m1 k2 w+ v
set credibility-all n-values people [creat-credibility]# L6 n9 D$ y$ S5 d
set credibility n-values people [-1]
9 Q) T& ^* `9 E& q* ~: sget-color  o6 f' W+ `1 \3 X$ E
& C# {3 `' f" q+ T
end
% K7 P+ n# _& [
3 i. B4 P+ H* S+ B1 p# d# Vto-report creat-credibility) S6 x$ J# k  K% I# f% b
report n-values people [0.5]
) j  \- N9 B3 k0 cend( I1 Q% g& D7 H4 h3 z" W

$ D$ \5 Z  O# {- N$ Ato setup-plots
+ F4 M1 o5 k( ]' {5 l
3 T. j' k3 n3 N" {7 d2 J) Mset xmax 30
4 d+ ?: k6 R6 f

; Z% x+ T: ?7 Aset ymax 1.0

& d0 i& H  z8 X. \' A1 U+ V* I, H' f9 v+ K; P) n; l  e0 d
clear-all-plots

; j6 M! ?) {, T9 K* m
; b) |% D1 i1 a3 [+ v* a4 `: ]setup-plot1
# {& V! ^6 d5 c/ V! s

6 V" w( Y0 l7 |  [6 E# n  bsetup-plot2
" w+ a% N6 z  ~, {2 h& h6 U/ o  l
6 |& J! i/ ]" d. `
setup-plot3
2 ]$ V4 L. \; l/ a
end
% d. n4 c* z3 x7 Y0 G! @6 F/ Q* D/ C/ M, t, @" A$ a6 r! e
;;run time procedures, o. S; V  K4 B- [8 k8 V
- n) ~+ D3 Z. d
to go- \$ e  I7 \4 J9 Z, {- h- X4 x& A
. q3 c1 s8 `; H/ J2 [) n
ask turtles [do-business]

+ l: I+ L, j! w6 {0 fend8 p: w  Q0 u2 T* }2 m' z& `; _

9 ?( i5 g7 ?$ v! ?# o" x$ \to do-business
( Q9 k1 K% \* ^5 @* P2 Y8 D1 k" P/ |# S

! r0 p% }% i0 C/ ]2 _3 l: b
: X. y+ C+ \2 r7 D5 Prt random 360

+ k9 l5 o( N- S
( x3 Y$ v3 _  lfd 1

7 F; v* @* A7 j, o* ~# Y
3 ~# ]% }' R5 T: iifelse(other turtles-here != nobody)[
# Q# I% v2 S2 m6 h1 b" @
1 {/ I5 O* _+ a% L: R3 `
set customer one-of other turtles-here
$ v% g( g& ?2 {

( N, s3 P/ _9 G, I, e( B( @/ S. |) s8 J) l;; set [customer] of customer myself
" O. s9 n+ y; o: G6 g! M

6 ^5 r* M/ {& k9 vset [trade-record-one] of self item (([who] of customer) - 1)
& u/ \& o6 a  k  I1 p2 D* x- d[trade-record-all]of self
5 e- ], @. e, l" y" a$ I7 ]- n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ A2 t# h, e' j, T9 b- u$ ^+ V5 h1 \8 ]) c8 B4 I# V
set [trade-record-one] of customer item (([who] of self) - 1)
( m& F' C- n4 m[trade-record-all]of customer
, J( H/ b2 y/ P! W5 N4 s
& ]! y; a9 m0 U: g/ w
set [trade-record-one-len] of self length [trade-record-one] of self

% w1 V  Z3 H' z% `# r' y- f) W4 ~4 N/ J& G6 H$ R7 A, Y
set trade-record-current( list (timer) (random money-upper-limit))

" |9 j, g( t% `
9 @0 h+ O) E; A, n. Oask self [do-trust]. c/ ], b- U+ D, i
;;
先求ij的信任度" {% n1 o/ S) S8 n

* D) A' @& Z1 x* b$ Cif ([trust-ok] of self)
) R$ ?. b' U0 I( _, [+ X2 O6 z;;
根据ij的信任度来决定是否与j进行交易[5 \% J) X, S' X3 E2 e. l1 N: I  t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. v3 q4 [1 l# O0 ^) V+ h7 \2 V2 x& o0 y- f4 f4 W1 W" H8 O6 |8 S
[

, ?. ~% A- m* k  B' z) J; Z+ L* v2 r/ e; N/ q
do-trade
& h' t9 W* u6 ?7 H$ v. V# Z

6 b2 h& J6 _' q9 aupdate-credibility-ijl
6 v6 R7 w4 A7 P# A1 y* G
8 S/ l) Q* ~& o5 Y5 y: \
update-credibility-list
/ _$ [: s9 y/ M  i# s/ k
+ Z0 C; l5 u+ R- Q2 T$ }2 G( j
" I% K! g) |9 ]- o' d, _: Z2 _
update-global-reputation-list

& v) H" K! D8 `( b9 _  W; y. ]
8 w$ e: a& s, F  R  Rpoll-class

$ h0 s0 ?% T1 Y$ M( ?
" Q: a# C+ T/ `) J  \' @get-color

) l4 Y6 N. d0 q0 B
: A- j+ `- \# M6 a8 ?' s" U" k]]4 {1 F! c3 M$ `9 A9 d
( H- i- D1 @$ j% e; g
;;
如果所得的信任度满足条件,则进行交易' g2 {$ e! D! e# |1 p, o4 q; k
. Q3 |" F0 e* O
[

; _) J2 O* |  z1 R- j4 _1 u& l7 ^' @3 c4 f- P! S
rt random 360

: y2 w9 n- y) h" t' B* x0 k  E
# u8 H/ J' _9 P; ~9 Zfd 1
, ?3 V8 W, T- y: r6 O/ L

0 c. P/ ^3 M, T]

; V8 @# m& F- \0 O4 G9 d
/ B: i% W( e8 nend
3 X3 [' `+ u2 X3 s- C1 M

' K' V8 P* l! V5 R3 \to do-trust
8 {4 L8 }0 v' @" j! u, X& M2 H5 ]set trust-ok False6 k6 C( F5 R: X; Z& \4 l2 Y

' y% F' M) A1 D0 B
7 i& x/ G" Z# N- R. @3 g
let max-trade-times 0
- ]5 T% P5 |/ ^3 L: N& {- ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ t& V) }$ m( V4 J6 p, q2 Plet max-trade-money 0
1 R9 b2 o2 I+ Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 R$ c0 `4 r' F$ D& q! W; z5 |let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 y; @* G9 @, L7 f2 S% n" ]# k# J
9 d0 ~( s9 \% ]: j% n
3 {1 e4 u% L8 b; |
get-global-proportion# ?* A$ o4 k+ |1 p( K
let trust-value
1 @8 c7 T; }! f+ llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ _' C- x9 S# D4 c; ~4 ]
if(trust-value > trade-trust-value)
% T5 ^4 t+ x# w2 n" R. A+ Y[set trust-ok true]
, `/ D- a; y- send
& |& b$ s4 t1 I  H0 L4 H% v. `
' w4 z- h5 `& V# Jto get-global-proportion6 b, L" G  u0 M+ ^! r8 t* q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; E1 @5 o/ u" T& l3 s[set global-proportion 0]- L8 r$ `( l- B5 t2 n% m, x4 V
[let i 0
! v" P8 h5 p5 y; @let sum-money 0
! d2 X* S' |2 i# p+ w- i; @, ]while[ i < people]
# n! U8 t, p# S) A( P[
: @5 Z. b; N1 \2 {$ A' `2 E9 mif( length (item i
5 @' W" j5 @* u" u' h[trade-record-all] of customer) > 3 )

* V! H; S2 y" B4 O[
7 g3 W9 \7 v% @% u7 zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ z7 [1 W# _& E
]# ^) S5 q9 }) W5 ?. d8 Q0 O
]. ]: t  u/ f8 c2 d) b6 l
let j 0
7 B+ h' w+ j" K8 p; qlet note 0
& _% |! c# ?8 ]/ |3 bwhile[ j < people]. r' j$ q) {* I& @4 F
[
- U- N+ B" d" i2 Dif( length (item i. A4 U. u' X! w
[trade-record-all] of customer) > 3 )
" @. p- r7 t0 v
[
4 H& }# K4 v: H3 e$ f0 ~2 T3 Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% o( D% p* `8 v# F  Y- l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 Y) W. p& t: S; C1 [. z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# y* a7 g) _& u0 s. q1 s6 x) C
]$ O* S, ]1 o# r
]% t  g' |, x! `% Q) @
set global-proportion note) {' }! l; v( [
]
  o  I- A& s5 ]# j0 N& {end* i" N8 D% f* y+ ^

5 s% P2 s+ |" Q# X0 E; I" Wto do-trade
" g+ Y  m6 m% [5 _8 w8 I2 L;;
这个过程实际上是给双方作出评价的过程
' l/ X! f1 u. A0 V6 ~" S7 M. S: Eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) O' ]( b& z# W" v1 b- O- K6 t. wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; _5 K  g% [. _% w/ I. Y$ B$ {
set trade-record-current lput(timer) trade-record-current4 [3 g! V5 u' H* C' ?" \( Y
;;
评价时间) `9 m" h3 G- ]; y& o2 @
ask myself [# [7 w) ]! |1 u8 a5 S
update-local-reputation
, K, d4 w' p) I- g) yset trade-record-current lput([local-reputation] of myself) trade-record-current
2 x& v& v9 Z: {]* L. s4 R9 }' C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( ]6 |, {* B# n# }; {
;;
将此次交易的记录加入到trade-record-one
2 y6 P# a/ E9 ^" }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: y0 c) O; L; Xlet note (item 2 trade-record-current )
5 [' _. i$ i# r( P& pset trade-record-current
4 `- z* Z8 F& N! w+ `(replace-item 2 trade-record-current (item 3 trade-record-current))

5 {/ D! @! P, pset trade-record-current) Y4 _6 b: B7 [4 c) {
(replace-item 3 trade-record-current note); B8 u7 r5 M- [  V+ F
' e+ q) m: q( R6 f5 g3 T
/ b( x# f. B# h/ u2 ^
ask customer [2 R( V1 |' V5 B
update-local-reputation
" P$ C) C9 v5 C9 q5 U2 I+ [  qset trade-record-current2 r, W5 \" C$ F7 S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 i2 {2 L! T+ T# l) ^]6 r: H* o& \2 g- X9 ]5 H- l
) u* T  n; H4 C9 k

% b5 s% M1 J2 e- Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ }4 u/ L0 p  N2 |: Z* R# _) u
9 ]. N& i, ^+ l8 y- z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. q. m5 [& ?% }7 x9 q;;
将此次交易的记录加入到customertrade-record-all
0 @4 H. M0 P4 t" d& N5 C/ ?3 Z+ W; Cend3 R& M, ^$ H) q
% z# G% X+ n) O1 d0 A, j
to update-local-reputation
# e/ P4 c4 _8 K* }" Dset [trade-record-one-len] of myself length [trade-record-one] of myself
" _+ t! c# v9 g2 g
8 ]# v# f0 [; a' r! F- T$ f% r6 e$ V* Q
;;if [trade-record-one-len] of myself > 3
, x& Q( ~& l" i$ u* S5 K# A
update-neighbor-total8 {+ f6 w* ~# b- H$ A  n  I7 @! F' U
;;
更新邻居节点的数目,在此进行
( M" L+ V- o5 V! B+ g* t( }5 Ulet i 3$ ]- l) U2 r2 m# V
let sum-time 0( R1 y. U  k: t1 E% b/ A
while[i < [trade-record-one-len] of myself]
1 T8 ]$ b% g2 g9 A& u[
* I; @3 W. {2 P: s6 G! bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 K: N+ u0 l* B/ {set i
% Q# W9 z+ j: z+ _! u( i + 1)
. V9 j  j4 X4 c( v* D
]; @% {  E8 j# _- O/ o
let j 3. {6 m& r8 T) `' x5 \& |
let sum-money 09 a6 O) n* M& T( w+ H7 C  V
while[j < [trade-record-one-len] of myself]
5 A3 L% }3 O9 S, s$ X7 o& z[& l  e+ N" j" J& E: k
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 Q5 s9 D. J/ A4 v6 Zset j
1 v( h8 ?2 v7 x1 q( j + 1)

: f) _, m* a8 H  O+ U]
$ K4 }+ _" l* [3 ]" |let k 3
6 S- }: F' ^0 s; q: p; C# ^% x; |let power 0
. d. j" D! v. d- p4 i# [9 mlet local 0* g7 ?! y9 q; E. E1 P
while [k <[trade-record-one-len] of myself]) D. _% u$ `6 [) v
[" V$ F2 _/ r; t9 k  f. Y
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) ' ~, }% ]5 L: o2 w
set k (k + 1); ?8 q3 M: m+ I$ _' e
]/ b# u, y8 p4 g- ^( ?
set [local-reputation] of myself (local)$ v' e( a1 N$ |4 d- V: p9 i2 ?$ D
end
: O7 s' S# g  o! h# _+ B) J  [3 F
$ V, |+ s; i4 q0 [3 L' h4 C* Ato update-neighbor-total
5 Y: _" @; G8 ~# I4 W6 F" ]8 U+ N' y: ~9 ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: D% t0 ^& v2 f. D" v0 `7 b% r& Y* f# U6 G4 u' s

" I& z3 s  g7 u# D, C# Kend
  D% t6 F, }0 t. A6 r8 `. Q8 e/ o5 e$ c/ h& K, k4 a1 n# o
to update-credibility-ijl
6 t. G! Q/ X5 `. w, T# z, k" \  c; f" U/ O! Q, X' P$ D7 R
;;
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。
0 j* P8 \% ^4 jlet l 0
$ p* D* Q: ^/ \& T% S4 i! zwhile[ l < people ]0 \: z1 y; W; e* g8 z5 }
;;
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5 ?  t2 W! F2 d8 L
[
0 `3 m8 a6 h) Q2 d2 o/ H* Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% X. u' W; ?6 L6 [% ?
if (trade-record-one-j-l-len > 3)
$ U. p( o4 u) m3 G[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
/ A5 p0 S7 n- o, N; Glet i 3
+ I0 Q' W  u8 ~" blet sum-time 0$ b! p9 [& {4 V
while[i < trade-record-one-len]- {3 `6 q! _0 Z6 K/ c+ d+ z
[% z& u' ]  Z& S; ~- R+ P* _: m9 b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 r8 L$ _& d+ b9 X- k: d) [set i
  V' S( m) j! ^9 m" f( i + 1)

+ f: f$ R( x$ ~# l5 j8 a]
) z7 E1 A9 Z5 f; }6 I! i& Ilet credibility-i-j-l 0! r- [1 {* n$ R  c0 J6 }0 j
;;i
评价(jjl的评价)
1 m4 t: J2 j5 h1 G+ }let j 3* `- Z5 u9 e$ N
let k 4) \; J5 J+ [3 S% G( Z/ M5 _& M, N, S0 O
while[j < trade-record-one-len]( x  C, P2 v' L- u& N
[
% n- q7 Q' j7 g9 h( @/ r1 xwhile [((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9 N- L) N' d4 o' |0 v$ R3 l6 W; I
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)
( h4 @1 M! Z, ~, h0 S, h4 k" kset j) c" w  x' R; C) ^% r: @/ l0 v  B
( j + 1)

) c! u4 W% k. ]7 f( n9 K  f]) I0 i) l$ g3 h4 G
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 ))
( x3 D: I! W/ Y0 n- p4 d
& a$ K  p6 J+ x/ F8 p2 [
: N0 _  I8 x' G  ]6 ?9 L1 o, F2 |8 m
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; N) n" `* u7 D& N/ T( U' k/ A;;
及时更新il的评价质量的评价
5 Q  [  N2 R/ v( @( p) |: Iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' T: @, y  }2 f6 _5 F7 B6 D
set l (l + 1)0 Z2 \6 V: E2 k
]
7 ^9 n! }2 Q' m. {1 ~2 @end! L2 b$ ?2 y, m2 I" c9 o" t
4 @5 U3 t1 Z: A4 z/ J5 f9 o
to update-credibility-list3 g$ e. G1 s5 U
let i 07 t. K4 A( G# G
while[i < people]
! l5 X( D8 a! w/ y7 b[
  Y2 w5 e- c  b* U0 X3 H7 j1 xlet j 0' _; d! D) r, N% k1 v) o# w0 s
let note 0
: O/ }  ~+ ~# P1 u: Xlet k 0" S( t# Q( b% p' g- O
;;
计作出过评价的邻居节点的数目
% P- T7 @% c: c5 f# @4 \while[j < people]3 {% V& b) t& W: y2 L7 Y. z; ]
[4 v2 x( a3 ~1 j5 N$ p  W# A) {
if (item j( [credibility] of turtle (i + 1)) != -1)
  S$ P) J4 v* a+ g, B1 n# x4 ?;;
判断是否给本turtle的评价质量做出过评价的节点
- e& n% l# @4 h1 ~- z+ Z5 T[set note (note + item j ([credibility]of turtle (i + 1)))0 s2 q% p2 J9 R# }9 b  M/ K% P% _+ _
;;*(exp (-(people - 2)))/(people - 2))]

3 s# O8 {1 U4 Oset k (k + 1)' `( R7 i1 T8 D1 {! g4 u4 e0 t/ N
]
0 \8 i8 X" P0 q$ E0 }set j (j + 1)* ?0 Q4 }- k  l+ D; b
]
7 P/ w$ R3 W' H  L  bset note (note *(exp (- (1 / k)))/ k)
; o1 Q5 a! Z7 l  r# w$ _set credibility-list (replace-item i credibility-list note)% P4 M! ~4 ?2 V( k2 }: a' P
set i (i + 1)- |! }. u- r3 A( e0 l
]
% j# H* @: Z1 dend
: i/ B) r5 N. I  J+ f0 \+ W
* N0 f) G+ Z" r2 hto update-global-reputation-list1 g0 j% G7 L3 @4 x/ d/ M/ c/ j
let j 01 [! w5 ^; I! E
while[j < people]$ d) h/ Q7 P4 C
[, O# U' N5 W2 x* g% }
let new 0
8 v; x  o6 c4 p, Q7 r; d* A, q;;
暂存新的一个全局声誉: A, T4 \+ {% N4 G
let i 0
! W( E/ B- G8 Q4 Zlet sum-money 0+ m& b; t9 l# N! n  J& H' J
let credibility-money 0* V$ @% V- W/ T8 |
while [i < people]
: }0 s. h& b0 l[7 W; ?* ?; i2 d! i, r) O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% Z( f8 Y) U7 _' v# s" D% ?5 x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 Y8 U9 o0 ]& X7 U$ N( G
set i (i + 1)
- P9 f: ?  q) b9 c, v]7 w. u% n9 L* |/ K$ F/ s
let k 0
  @& v0 ?  M  jlet new1 0+ G& H; I) M/ E# `/ r
while [k < people]
* H, R6 t9 N+ Y' c+ F  V[. X( L4 |- e9 G" L
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)
( L1 Z( a* F9 b5 N) R9 s  s( `set k (k + 1)
2 W7 z4 o3 _5 S% ], h4 U2 W% i# P$ w]
' n0 h& {: }7 l; ~! l- Z# Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 p% s5 m/ r; ?* S2 s& |! P9 \; wset global-reputation-list (replace-item j global-reputation-list new)% t- X; ^/ S1 M
set j (j + 1)
& Y4 A9 e+ G* x, \0 N2 t]
* b& w2 g5 H4 \1 z1 }end
% e# h% ]1 L% o' X0 A$ a* V' K, H+ g8 h0 U- T+ {

& x- @( L+ j- Z, w4 c9 f6 O7 r% T. |3 h5 P- C. y9 i' G
to get-color
8 {3 }/ L  u+ L! v5 {( R' L* U3 I, a0 R( a, @1 W
set color blue
% w/ b2 u& l% d5 _0 n0 q
end
. v1 \4 p/ C7 t" x& X+ K3 C
. i6 E& _6 D1 ^% Zto poll-class
; j5 T1 ?" `+ ~" Oend
0 z& {, f4 Q: h- b5 I8 f6 C
6 _3 n( B" a  t. ~, Vto setup-plot1
! l( Q9 j7 @& Q: S0 B5 u, m7 f  t/ p) W( D) H3 X0 M! K* f
set-current-plot "Trends-of-Local-reputation"

* F- J  V, m. e  A7 ^& V# W
8 ^: `' J0 `1 b  H( u8 v3 pset-plot-x-range 0 xmax

. u  K( w8 C9 W: Q; e9 X. I5 l- ]
set-plot-y-range 0.0 ymax

; B! o5 b; _0 k& n3 A8 Dend) ]% ~& V0 I3 Y- }
* S: b0 |0 O5 m# D
to setup-plot2
. Q$ [# G0 D9 s. H0 F+ \- M# W5 R$ @' V8 g
set-current-plot "Trends-of-global-reputation"
& o4 L5 v" l5 y) |

( O& J. q! W% I$ n: f* q9 wset-plot-x-range 0 xmax
& A; T" U& ^1 r& J7 U4 F0 N

. B4 ?& w  y, Z' d$ D1 Bset-plot-y-range 0.0 ymax
& I) \$ W+ U# C! J4 b2 @
end
/ [$ L% G, F8 M+ Z5 u  w1 ]; z. i
to setup-plot33 d; \. A3 v6 \; g

6 [  m- \7 _& h6 lset-current-plot "Trends-of-credibility"
0 @4 Q2 ~& @6 o' A) W. k3 V% T
( h, y" o" K* b7 v6 s6 [$ y9 }5 z
set-plot-x-range 0 xmax

9 _/ _2 @, ^: N% M. @2 j( [
, n) D3 I- U, l$ @+ c# Gset-plot-y-range 0.0 ymax

- j4 s" R9 t, R) wend
( w: \- i2 a2 o* X6 Q7 Q
5 G6 j4 [7 e, C: oto do-plots
* `: H3 x7 N% }/ W* [: ]set-current-plot "Trends-of-Local-reputation"
+ b8 W" d9 {# _) ~; _set-current-plot-pen "Honest service"$ X" I' ]4 e+ V3 r4 M. P
end/ _7 s6 a. A) K. N5 @$ x

1 C  N8 O/ g, H: @( 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.
& ?! c" A% X/ s$ \" D$ u5 g" T$ a
- z( q7 ~% D* h' x9 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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